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SECTION 3.0

CONSERVATION PLANNING PROCESS/DESCRIPTION AND
AREA PLAN CRITERIA OF THE MSHCP CONSERVATION AREA

3.1 CONSERVATION PLANNING PROCESS

3.1.1 Process Background

The conservation planning process for the MSHCP Plan involved a variety of concurrent and sequential elements. These elements are listed below and summarized in this section.

3.1.2 Overall MSHCP Goals and Conservation Planning

Context

Sections 1.2.3 and 1.2.4 of this document summarize the overall planning and regulatory context within which the MSHCP conservation planning process proceeded. The range of stakeholder objectives to be addressed by the conservation planning process is presented in the planning context presented in Section 1.2.3. These various inputs resulted in the overall MSHCP goals and objectives presented in Section 1.3 of this document and in the policy direction provided by the County Board of Supervisors as noted in Section 1.3.

3.1.3 Compilation of Existing Data

A description of the biological and physical databases is provided in Section 2.1.1 of this document. In addition to these databases, a variety of other data were assembled as part of the overall RCIP process and informed the conservation planning process for the MSHCP. These include digital data layers depicting existing land use, planned land use, status of land ownership, existing and planned roads, utility easements and assessors parcels.

The biological and physical databases described in Section 2.1.1 were augmented by additional literature reviews and data gathered from a variety of sources. Input also was sought from local biologists. Representatives from the USFWS, UCR, DUDEK, RBF, Los Angeles County Museum, Coachella Valley Association of Governments, Tierra Madre Consultants (now AMEC), Camp Pendleton Amphibians and Reptiles Survey (CPARS), Zoological Society of San Diego, Loma Linda University, County of Riverside, and independent consultants convened for a three-day habitat assessment workshop on April 27 through 29, 1999. The workshop was followed by a subsequent meeting with Dr. Robert Fisher of San Diego State University and DUDEK regarding species occurrences and general conservation issues on June 9, 1999. The purpose of the habitat assessment workshops was several fold: to identify the goals and objectives of the MSHCP; to provide a forum for review of the data available for the planning effort; to discuss the status of the species data and accounts; and to discuss approaches to habitat assessment. A detailed description of the workshops can be found in Appendix C of the August 9, 1999 "Draft MSHCP Proposal" (DUDEK 1999) on file with the County of Riverside.

On June 30, 1999, a workshop hosted by UCR was conducted to further solicit information regarding species proposed for analysis as part of the MSHCP. Local biologists and other experts familiar with Western Riverside County flora and fauna discussed existing data and data gaps for the species to be addressed as well as other taxa (e.g., insects). A general evaluation of the existing data was made for each of the taxon, data gaps were identified, "hot spots" for species occurrence were noted, and corridors and areas of concern were identified. Habitat management also was discussed.

Other sources contributing to the compilation of existing data included ongoing personal communication with local biologists and biologists with the USFWS and CDFG, querying the CNDDB, and reviewing Environmental Impact Reports (EIRs) and Biological Technical Reports prepared for specific development projects within the Plan Area. This effort has been ongoing throughout the MSHCP planning process.

Analysis tools developed specifically for the MSHCP included the Bioregions map described in Section 2.1.2 of this document. An additional analysis tool to evaluate edge-affected areas under existing conditions and associated with potential conservation scenarios was developed. Edge- affected lands under existing conditions were identified using the MSHCP vegetation map, Bioregions map and major highways map. These polygon-based data layers were converted to 100-foot pixel grids. Lands were either classified as Habitat or urban/agricultural. Based on distance between urban/agricultural lands and Habitat, "Edge Effects" were defined as follows: 0-250 feet - strongly affected; 251-600 feet - somewhat affected; >600 feet - relatively unaffected. The application of this tool to analysis of the MSHCP Conservation Area is described in greater detail in Section A of the MSHCP Reference Document - Volume II of the MSHCP Plan.

3.1.4 Applicable Conservation Biology Principles

General principles of conservation biology are captured by the reserve design tenets described in the NCCP General Process Guidelines and NCCP Act (CDFG 1998). These reserve design tenets provided a framework for the conservation planning process. They can be summarized as follows:

The theoretical and empirical underpinnings of the NCCP reserve design tenets can be found in the conservation biology literature, of which key concepts are summarized here.

Although many factors can be incorporated into reserve design and selection, diversity, rarity, naturalness, size and representativeness are the most widely used (Margules et al. 1988). Other considerations include island biogeography design principles of MacArthur and Wilson (1963 and 1967): (1) area effect - the larger the preserve, the greater the species richness (i.e., species/area relationship) and the greater the chances of long-term viability of populations (more individuals); (2) isolation or distance effect - the less the distance between reserve units, the greater the opportunity for gene flow, colonization, and rescue effect (e.g., also see Brown and Kodric-Brown 1977); (3) species equilibrium - the number of species that an area can support is determined by a balance between colonization and extinction; and (4) Edge Effect - the larger the ratio of reserve area to reserve perimeter, the lesser the Edge Effect.

An Edge Effect is defined as a change in the "conditions or species composition within an otherwise uniform habitat as one approaches a boundary with a different habitat (Ricklefs 1993)." Edge Effects at the boundary between natural lands and human-occupied lands ("urban edge effects") arise due to human-related intrusions such as lighting, noise, invasive species, exotic predators (dogs, cats, and opossums), hunting, trapping, off-road activities, dumping, and other forms of recreation and disturbance. Although some species are in some ways unaffected by edges [e.g., reproductive output of the rufous-crowned sparrow (Morrison and Bolger 2002), distribution of arthropod species (Bolger et al. 2000)] or even show preferences for edges (e.g., indigo buntings and northern cardinals in Woodward et al. 2001), human-induced edge effects are generally unfavorable to native species.

Another important feature of reserve design is the spatial arrangement of wildlife movement corridors and Linkages between Core Areas. At this point it is useful to contrast movement corridors with Linkages. Movement corridors are often linear and facilitate efficient movement by providing adequate cover and lack of physical obstacles for movement (Beier and Loe 1992). Movement corridors do not provide Live-In Habitat for species. Linkages, in contrast, are areas providing permanent resident "Live-In" Habitat as well as movement Habitat for a particular species. The Linkage contains resources that meet the life history requirements for the species the Linkage is intended to serve. Known as landscape Linkages, these areas are capable of sustaining a full range of community/ecosystem processes, thus enabling seed dispersal and animal movement over a period of generations (USFWS 1999). Each habitat connection may be defined as a corridor or a Linkage for each species. Therefore, although areas in the MSHCP designated as Linkages may in fact function only as movement corridors for some species, for simplicity, connections between blocks of Habitat are always referred to generally as Linkages in this document.

Connectedness through landscape Linkages and movement corridors is important because habitat fragmentation and isolation lead to extinction of local populations and are the most serious threats to biological diversity. Bolger et al. (1997) found fewer rodent species in fragments isolated for longer periods of time and by greater distances. Lower arthropod diversity was also observed by Bolger et al. (2000) in older and smaller habitat fragments. The probability of extinction becomes greater as immigration and emigration are impeded by conversion of natural Habitat between occupied or potential habitat patches to inhospi land covers. Linkages, therefore, serve to ameliorate habitat fragmentation and isolation by permitting the following: (1) the travel, migration and meeting of mates for wide-ranging animals; (2) plant propagation; (3) interchange of genetic material; (4) movement of populations in response to environmental changes and disasters; and (5) colonization of available Habitat by individuals (Beier and Loe 1992).

Empirical evidence exists to support the utility of Linkages and corridors. In a study by Beier (1995), radio-tagged mountain lions never crossed into urban areas; individuals used defined movement corridors for dispersal and for traveling between areas comprising their home ranges. Beier and Noss's (1998) review of thirty-two empirical studies pertaining to the utility of wildlife corridors supported the idea that corridors are "valuable conservation tools." Price et al. (1994) also encourage the consideration of connectedness, particularly for endangered species such as the Stephens' kangaroo rat. Habitat connections are particularly important to the persistence of metapopulations which comprise this species' populations.

Using the available data, the five tenets listed at the beginning of this section were incorporated in the conservation planning process. The species list developed early in the planning process, as described in Section 2.1.4 of this document, along with the species occurrence database and input provided by local biologists and the information assembled for the species accounts (presented in Section B of the MSHCP Reference Document - Volume II of the MSHCP Plan), provided guidance for the overall species needs that would need to be met within the conserved areas. The MSHCP vegetation map, coastal sage scrub quality model, and edge analysis were combined and used in a variety of ways to identify the presence and locations of existing large habitat blocks for potential inclusion within conserved areas. These data and analyses also were used to evaluate existing and potential locations for Linkages. Data were generally analyzed by plotting hard copy maps of data layers and using acetate overlays to assess combined layers. This overlay technique was also conducted digitally using ArcView.

3.1.5 Review of Reserve Selection Models and Methods

In the spring of 1999 DUDEK reviewed several documents and papers from the "gray" and published scientific literature regarding theoretical and applied reserve selection techniques, ranging from relatively subjective ranking approaches (e.g., Duever and Noss 1990; San Diego Multiple Species Conservation Program [MSCP] and North San Diego County Multiple Habitat Conservation Program [MHCP]) to highly automated reserve selection approaches (e.g., Church et al. 1996). Based on this selective review of the literature, it was determined that these reserve selection procedures held little promise for a priori reserve design in the MSHCP planning effort for several reasons: (1) the lack of necessary data to run most of the models; (2) the lack of time and resources to collect such data; (3) the lack of time and resources to validate the results of the models; and (4) the scale differences for the MSHCP Plan Area (highly parcelized) compared to typical scales of 1/4 sections (160 acres) and sections (640 acres) used in the scientific models. Nonetheless, it is instructive to review some of the reserve selection approaches described in the literature because they illustrate many of the important concepts of conservation biology theory and provide some useful analytic approaches for evaluating the MSHCP.

There are many examples of reserve selection procedures in the literature, ranging from quantitative rankings of alternative reserve areas (Duever and Noss 1990) to automated computer algorithms that select reserve units based on pre-programmed criteria (e.g., Austin and Margules 1986; Bedward et al. 1992; Church et al. 1996; Kirkpatrick 1983; Lomolino 1994; Margules et al. 1988; Margules and Usher 1981; Rossi and Kuitunen 1996; Sætersdal and Birks 1993). The computer algorithms typically are designed to select the most efficient reserve system based on some preselected conservation currency such as the maximum number of species, rarity, or biodiversity hotspots; i.e., what reserve design provides the greatest conservation value with the least number of reserve sites? These reserve selection algorithms typically are optimizing solutions such as the Maximal Covering Location Problem (MLCP) (Church et al. 1996) or more simple heuristic iterative algorithms that find reasonable approximations to optimum solutions (e.g.,Margules et al. 1988).

A common feature of the reserve selection approaches is to establish conservation criteria, currency, or surrogates for conservation value. For example, Margules and Usher (1981) identified 18 classes of criteria for evaluating conservation value that could be incorporated into the selection procedure. Some common, but not necessarily mutually exclusive, criteria in these reserve selection models include the following:

Among these criteria, diversity, rarity, naturalness, size and representativeness are most widely used (Margules et al. 1988). Although these criteria tend to be common to selection approaches, how they are defined and used varies among the different model approaches (e.g., Belbin 1993).

As described above, a basic goal of the reserve selection models is to select a set of reserve units that optimizes or maximizes the representation of the identified conservation currency with the least number of units (e.g., Camm et al. 1996; Church et al. 1996). Criteria can be systematically and interactively manipulated to compare results using different priorities, assumptions, weightings of criteria, etc. A strength of such modeling is flexibility and the ability to evaluate different approaches fairly quickly, depending on the computer resources available, number of variables in the selection model, and the size of the data set. The disadvantage of this flexibility is that there are almost infinite ways that models can be programmed with regard to criteria, assumptions, and weightings. Thus, with a large and diverse group of stakeholders, achieving consensus on the most appropriate approach is extremely difficult. Also, demonstrating the sensitivity, reliability, and external validity of any given approach would be difficult in the planning time frame. The validity of the approach can only be evaluated in terms of the viability of the reserve system. Ultimately a functional analysis of the reserve system will occur over the next several decades through the monitoring and Adaptive Management Program.

An illustration of a reserve selection application is a study by Church et al. (1996) where reserve selection is approached as a Maximal Covering Location Problem (MCLP). The MCLP finds the optimum reserve design that solves the problem of selecting "the smallest number of sites from some biological domain which represents all, or as many as possible, of the species in that domain." Using the MCLP has a number of practical problems. A key assumption of the MCLP is that the reserve selected is large enough to support a viable population of a species, community, or Habitat, thus begging the question of what constitutes a viable species, community, or Habitat. This problem would have to be resolved before the reserve selection model could be applied because the viability threshold is part of the computer algorithm. Furthermore, the exercise of evaluating species viability is itself a spatial problem (e.g., how is a viable metapopulation spatially structured), and not just specifying a certain number of populations without regard to their spatial context. Hence, application of the MCLP after this is done seems somewhat redundant, although this qualitative analysis does not address the optimality of design. Finally, it should be noted that Church et al. caution that some optimality problems may be difficult or unsolvable. As the number of variables and data set increases, it is less likely that an optimum solution exists or that it can be easily solved.

Given the uncertain application of reserve selection techniques and the broad range of additional issues that would be triggered from such approaches, DUDEK tends to agree with the assertion of Prendergast et al. (1999) that funds should be allocated for more pragmatic and policy-driven approaches to Conservation (i.e., what are the jurisdictions actually capable of doing) rather than theoretical optimization of reserve design. Regardless of the reserve design selected, and whether it is algorithm-based or stakeholder-driven, the soundness of the MSHCP Conservation Area has to be evaluated by the Wildlife Agencies and other stakeholders.

Although specific reserve selection models were not developed and used for the reasons noted above, the concepts incorporated in the models and listed above (e.g., diversity, size, representativeness, etc.) were considered in the conservation planning process. Values and goals for the conservation planning effort were identified as described in Section 3.1.2 of this document. A comprehensive database was assembled as described in Section 3.1.3 and conservation biology principles were considered as described in Section 3.1.4. Based on this framework, an initial conservation scenario was developed for review by stakeholders with initial identification of potential acreage requirements. Development of this information was necessary for stakeholders to make decisions regarding the next steps in the conservation planning process. Subsequently, as described in Section 3.1.7, alternative conservation scenarios were developed for review by stakeholders and a recommended conservation scenario was selected. The recommended conservation scenario was then refined and analyzed as described in Sections 3.1.8 and 3.2 of this document.

3.1.6 Conceptual Conservation Scenario

An initial reserve concept was developed to assist the MSHCP Advisory Committee in decisions to proceed with conservation planning efforts. This generalized Conceptual Conservation Scenario was developed based on the existing data and literature, habitat assessment workshops, species occurrence information, coastal sage scrub habitat quality modeling, existing and planned land uses, and general conservation biology principles summarized in the NCCP reserve design tenets. At the direction of the MSHCP Advisory Committee, the Conceptual Conservation Scenario was presented and described in narrative form. A map was not prepared. Also at the direction of the MSHCP Advisory Committee, the Conceptual Conservation Scenario was intended to address the life history requirements of as many species as possible on the species list developed by the MSHCP Advisory Committee ( 2-2).

A key objective of the Conceptual Conservation Scenario was to develop a rough estimate of the number of acres needed to conserve the species on the species list developed by the Wildlife Agencies in concert with the MSHCP Advisory Committee (Table 2-2). To the extent possible, existing reserves and areas with multiple species and habitat resources (i.e., ‟hot spots") were incorporated to design an efficient reserve. Core Areas were identified including areas in both existing Public/Quasi-Public Lands and new areas.

Potential Linkages connecting the Core Areas also were identified. Consideration of the species anticipated to utilize the Linkages helped determine if the Linkage should be designed as a landscape Linkage containing biological features and resources for permanent residence, as a movement corridor primarily intended to convey larger wildlife or both. The San Jacinto River is an example of a landscape Linkage that is a Core Area for Narrow Endemic Plant Species but also serves as a movement corridor across the central portion of the Plan Area for species such as the bobcat. These Narrow Endemic Plant Species are dependent on the river's hydrological processes to maintain the appropriate soil and habitat features and a mechanism for dispersal. An example of a landscape Linkage constrained by existing land use patterns is the upland connection between Core Areas in the Lake Skinner/Diamond Valley Lake area and the Estelle Mountains/Lake Mathews Reserve area. Patches of coastal sage scrub exist in this area that provide Habitat for the coastal California gnatcatcher; however, existing conditions do not provide a continuous landscape connection suitable for less mobile species such as small mammals and reptiles. Examples of movement corridors unlikely to provide Live-In Habitat for most species include undercrossings of I-15 at Indian Canyon and Horsethief Canyon for bobcats and mountain lions moving between the Cleveland National Forest and the Estelle Mountains/Lake Mathews Reserve area.

Estimating rough acreages for Conservation was an important component of the Conceptual Conservation Scenario. This process involved:

Step 1: The narrative Conceptual Conservation Scenario was roughly mapped in the form of potential conservation analysis units. This rough map was intersected with the MSHCP vegetation map and vegetation acreages within each category were calculated using GIS.

Step 2: Consistent with the approach described in the August 9, 1999 "Draft MSHCP Proposal," 100 percent of the areas characterized as developed on the vegetation map and 75 percent of the areas characterized as Agriculture on the vegetation map were deleted from the acreage totals.

Step 3: Areas developed since the MSHCP vegetation map was prepared (1995) were defined using the Existing Land Use coverage developed in 1999 for the RCIP. The Existing Land Use coverage is based on 1998 aerial photography and 1997 SCAG database. Acreage estimates were determined for areas that appear to have been developed since the MSHCP vegetation map was prepared and these acreages were deleted from the overall acreage totals.

Step 4: A global 10 percent reduction in total acreage was then assumed based on anticipated new information such as updated information regarding existing Development, updated information regarding Public/Quasi-Public Lands, updated information regarding development approvals and Covered Activities.

A rough acreage estimate was derived from the four-step process described above and then an acreage range was applied under the assumption of various levels of species Conservation. The range of conservation acreages in the Conceptual Conservation Scenario totaled 380,000 to 510,000 acres of private and Public/Quasi-Public Lands.

3.1.7 Informal Gap Analysis

Methods

Based on the Conceptual Conservation Scenario described above, an informal gap analysis was conducted. This informal gap analysis is not to be confused with the formal Gap Analysis Program (GAP) described by Scott et al. (1993), but is based on the same principles (note use of lower case for "gap analysis"). The gap analysis identified areas as important for Conservation in the Conceptual Conservation Scenario but not currently in public ownership, i.e., there is a lack ("gap") of protection in these areas. The locations of existing designated open space lands and other public lands were mapped using GIS. The initial analysis was based on the status of land ownership map (Figure 2-9). Subsequently, a preliminary parcel-based Public/Quasi-Public Lands database was developed by County staff and was used for analysis. This database was then compared with a schematic map of the Conceptual Conservation Scenario using GIS to identify the gaps in Conservation and where land may need to be acquired to assemble the MSHCP Conservation Area.

Results

The gap analysis identified 153,000 acres needed for Conservation that are not currently in public ownership (i.e., the area within the generalized Conceptual Conservation Scenario that currently is unprotected). The gaps in protection include portions of core resource areas, landscape Linkages, movement corridors or Constrained Linkages, and other important localized resource areas such as vernal pool and the Delhi Sands flower-loving fly Habitats.

A narrative summary of the gaps in protection resulting from the analysis is provided below:

Northwest Section of Plan Area

Northeast Section of Plan Area

Southwest Section of Plan Area

Southeast Section of Plan Area

3.1.8 Identification of Alternatives and Selection of Proposed Alternative

As directed by the MSHCP Advisory Committee, the initial conservation planning process focused on identifying acreage requirements for a conservation scenario that would conserve the majority of species from the initial species list (Table 2-2). The MSHCP Advisory Committee also requested identification of alternative conservation scenarios that could result in Conservation of fewer species. These alternative conservation scenarios were identified as the Listed and Proposed Species Alternative, the Listed, Proposed and Strong Candidate Species Alternative, and the Existing Reserves Alternative. These alternatives were developed and analyzed both quantitatively and qualitatively using the MSHCP database in the same manner as the Conceptual Conservation Scenario. Schematic maps were developed for GIS analysis and visual display purposes for stakeholders. The alternatives are summarized in Section 3.4 of this document and in the MSHCP Alternatives Development Document (DUDEK, October 2000). Also considered as part of this process were a No Project/No MSHCP Alternative and a "more biologically robust" alternative. The No Project/No MSHCP Alternative is summarized in Section 3.4 and in the Alternatives Development Document and the "modified reserve design" alternative is discussed in detail in the MSHCP EIR/EIS and briefly in Section 9.0 of this document.

In general, it was concluded that alternatives that resulted in Conservation of fewer species would not substantially reduce acreage requirements for Conservation, or costs associated with Reserve Assembly. It was also concluded that the "modified reserve design" alternative would result in substantially increased costs while not resulting in Conservation of additional species. Based on these general conclusions, and other factors considered by stakeholders and the County Board of Supervisors, the refinement of the initial Conceptual Conservation Scenario, known as Alternative 1, was selected as the preferred alternative and the conservation planning process proceeded with further development and refinement of that alternative.

3.1.9 Conceptual Reserve Design/Criteria-Based Plan

At the December 19, 2000 meeting of the County Board of Supervisors, policy direction was given to proceed with preparation of a criteria-based plan for Alternative 1, which would conserve approximately 500,000 acres in the Plan Area. The criteria-based approach anticipates Conservation within the existing Public/Quasi-Public Lands comprising approximately 347,000 acres and development of Criteria to describe additional Conservation on private lands of approximately 153,000 acres.

Development of the criteria-based plan involved review and refinement of the initial Conceptual Conservation Scenario and conceptual Alternative 1 and creation of the Conceptual Reserve Design. This included an iterative process of going back through the data compilation and review, gap analysis, and consideration of conservation biology principles that were completed for the Conceptual Conservation Scenario and Alternative 1. The data layers described in Sections 2.1.1 and 2.2.2 were used for this process with updated data layers reflecting new information assembled throughout the planning process. The primary information updated throughout the process were the species occurrence data and other species-specific information obtained through review of literature and comments received on draft species accounts distributed at several intervals during the process. In addition, as noted previously, the Public/Quasi-Public data base was refined. A parcel-based Public/Quasi-Public Lands database was used for the description and analysis of the proposed MSHCP Conservation Area in this document. Updated land use data also were incorporated in the process including updated identification of lands with priorconservation agreements. Updated aerial photography became available in summer 2001.

As with the process for the Conceptual Conservation Scenario and Alternative 1, a specific quantitative model was not developed for the Conceptual Reserve Design. The iterative process involved overlaying data layers manually using hard-copy plots and acetates, as well as on-screen data overlays using GIS. Initial refined concepts were developed for review and comment by the Wildlife Agencies and their comments were addressed in the refined concepts. A more detailed description of the organizing framework and methodology used to develop the Conceptual Reserve Design/Criteria-Based Plan is presented in Section 3.3.1 of this document.

3.1.10 Description and Analysis of MSHCP Conservation Area

The process described in Sections 3.1.1 through 3.1.8 resulted in identification of an MSHCP Conservation Area that could be described and analyzed. The description and analysis of the MSHCP Conservation Area have two primary purposes: (1) to provide a complete enough description of the Conservation anticipated under the MSHCP such that Reserve Assembly can be adequately measured and monitored over the long-term MSHCP implementation process, while at the same time incorporating sufficient flexibility to allow appropriate response to new information and changing conditions; and (2) to provide a sufficient level of detail to permit analysis of Covered Species consistent with regulatory requirements. A generalized description and analysis of the MSHCP Conservation Area is presented in Section 3.2 of this document and in Section A of the Reference Document - Volume II of the MSHCP Plan. The detailed species accounts are included in Section B of the Reference Document - Volume II of the MSHCP Plan and summary species accounts are provided in Section 9.0 of this document.

3.2 DESCRIPTION OF THE MSHCP CONSERVATION AREA

3.2.1 The MSHCP Plan Map

Figure 3-1 depicts the Criteria Area within the Plan Area and represents the MSHCP Plan map. Four categories are depicted on the legend for the Plan map and are described below.

Criteria Area: This represents the area within which MSHCP Criteria will be applied and from which 153,000 acres of new Conservation will be achieved to contribute toward assembly of the overall MSHCP Conservation Area. Criteria have been developed for individual Cells or Cell Groupings and are presented for each Area Plan in Section 3.3.

Public/Quasi- Under this category, existing known Public/Quasi-Public Lands (PQP)

Public Lands: that will form the initial backbone of the MSHCP Conservation Area are depicted. Approximately 347,000 acres of Conservation are anticipated on these lands.

Within five years of Permit issuance, the RCA shall verify the precise acreage, location, amount and status of PQP Lands in the MSHCP Conservation Area. Such information shall be submitted to the Wildlife Agencies for review. In the event that a Permittee elects to use property currently depicted as PQP Lands on the MSHCP Plan map (Figure 3-1) in a way that alters the land use such that it would not contribute to Reserve Assembly the Permittee shall locate and acquire or otherwise encumber replacement acreage at a minimum ratio of 1:1 replacement taking into account direct and indirect effects of PQP Lands in one location with PQP Lands in another location. The Permittee must make findings that the replacement acreage is biologically equivalent or superior to the existing property as set forth in Section 6.5 of the MSHCP, Volume I.





Rural Mountainous Designation: This category represents the Rural/Mountainous land use designation incorporated in the County General Plan. In general these lands are characterized by steep slopes that represent constraints to Development. For example, of the approximately 54,900 acres depicted on the MSCHP Plan map outside the Criteria Area but within the Rural Mountainous designation, approximately 42,500 acres (77 percent) are characterized by slopes with gradients greater than 30 percent. While Reserve Assembly activities are not expected to occur in Rural Mountainous designation areas outside the Criteria Area, existing and future land use practices in these areas may provide an edge for the MSHCP Conservation Area that would minimize Edge Effects when compared with more urban land uses.

American Indian Lands: American Indian Lands are depicted on the MSHCP Plan map for reference purposes. No Conservation is assumed on these lands and no activities on these lands would be permitted under the MSHCP. The American Indian Lands are not a part of the MSHCP.

The MSHCP Conservation Area will be comprised of existing Public/Quasi-Public Lands and new Conservation on approximately 153,000 acres of land within the Criteria Area. While the precise configuration for new Conservation within the Criteria Area has not been defined or mapped, a Conceptual Reserve Design was developed for analysis purposes as described in Sections 3.1.9 and 3.3.1 of this document. While certainly not the only possible configuration to emerge from application of Criteria within the Criteria Area, the Conceptual Reserve Design was a useful tool in establishing conservation targets as part of the MSHCP planning process. The conservation targets developed as part of that process, along with anticipated Conservation on Public/Quasi-Public Lands, form the basis for the description of the MSHCP Conservation Area presented in this section. Achievement of the conservation targets as part of the overall Reserve Assembly process will be an important measuring and monitoring tool for the MSHCP.

3.2.2 The MSHCP Conservation Area

In addition to the features incorporated in the MSHCP Plan map, as described above, the MSHCP Conservation Area may be described in terms of several specific analysis factors considered during the conservation planning process. These include Bioregions, vegetation, soils, patch size, and edge affected lands. This section provides a summary description of the MSHCP Conservation Area based on those analysis factors. A more detailed description is provided in Section A of the MSHCP Reference Document - Volume II of the MSHCP Plan. The MSHCP Conservation Area may also be described in terms of Cores and Linkages. The description of Cores and Linkages is provided in Section 3.2.3 of this document.

Bioregions

Within the MSHCP Plan Area, large percentages of the Agua Tibia mountains (80.3 percent, 10,130 ac.), San Jacinto Mountains (71.7 percent, 134,000 ac.), San Jacinto Foothills (64.6 percent, 72,240 ac.) and the Santa Ana Mountains (61.3 percent, 85,810 ac.) Bioregions are conserved. Significant amounts of the Conservation in these Bioregions occur within existing Public/Quasi-Public Lands. Smaller portions of the Desert Transition (37.7 percent, 33,460 ac.), San Bernardino Mountains (34.5 percent, 9,990 ac.) and Riverside Lowlands (24.2 percent, 166,820 ac.) are conserved within the MSHCP Plan Area. Much of the central portion of the Desert Transition Bioregion will not be conserved. Six percent of the Desert Transition Bioregion currently supports urban Development or agricultural uses. About ten percent of the San Bernardino Mountains Bioregion currently has urban or agricultural land uses. The remaining non-conserved lands are either American Indian Lands (5.7 percent), Rural Mountainous (15.7 percent), or undeveloped private land. The Riverside Lowlands is the largest Bioregion and will have the lowest proportion of its acreage in Conservation, with 24.2 percent (166,820 acres) within the MSHCP Conservation Area. Approximately 50.4 percent (about 347,800 acres) of the land in this Bioregion is currently supporting urban or agricultural land uses. Very little of this Bioregion is within American Indian Lands or is considered Rural Mountainous.

Vegetation

Table 3-1 presents a summary of Vegetation Communities conserved within the MSHCP Conservation Area. Playas/vernal pools and water vegetation types had the highest percentages of Conservation within the MSHCP Conservation Area, with 85 percent of the total acreages of both these Vegetation Communities conserved. Riparian scrub/woodland forest, Riversidean alluvial fan sage scrub, woodlands/forests, chaparral, montane coniferous forest, coastal sage scrub and meadows/marshes also are conserved at high levels, with 50 percent to 75 percent of each of these Vegetation Communities conserved. Desert scrubs, grassland, Agriculture, and cismontane alkali marsh are conserved at the lowest levels, with percentages of Conservation at 34 percent, 28 percent, 12 percent, and 3 percent, respectively.

TABLE 3-1
ESTIMATE OF CONSERVATION BY VEGETATION COMMUNITY
Vegetation Total Acres in Plan Area1 Total Acres in Existing Public/ Quasi-Public Lands Total Acres of Additional Reserve Lands Total Acres Conserved Percent of Total Vegetation Community Acres Conserved in Plan Area
Agriculture 169,480 11,480 8,540 20,020 12%
Chaparral 434,950 207,380 64,900 272,280 63%
Cismontane Alkali Marsh 1,260 <5 40 40 3%
Coastal Sage Scrub 156,450 34,560 47,160 81,720 52%
Desert Scrubs 14,570 1,310 3,680 4,990 34%
Grassland 154,140 22,810 20,010 42,820 28%
Meadows and Marshes 1,020 330 180 510 50%
Montane Coniferous Forest 29,910 20,480 20 20,500 69%
Playas and Vernal Pools 7,910 2,920 3,830 6,750 85%
Riparian Scrub, Woodland, Forest 15,030 7,270 3,920 11,190 74%
Riversidean Alluvial Fan Sage Scrub 7,940 2,060 3,170 5,230 66%
Unknown 1,350 1,230 10 1,240 92%
Water 12,210 9,150 1,190 10,340 85%
Woodlands and Forests 34,300 20,770 2,730 23,500 69%
Developed or Disturbed Land 218,260 4,780 - 4,780 2%
TOTALS 1,258,780 346,530 159,3802 505,910  
1 This includes the following acreages of each Vegetation Community on American Indian Lands that, while within the Plan Area, are not a part of the Plan:
Agriculture: 1,110 Montane Coniferous Forest: 10
Chaparral: 20,290 Riparian Scrub, Woodland, Forest: 420
Cismontane Alkali Marsh: 1,110 Riversidean Alluvial Fan Sage Scrub:790
Coastal Sage Scrub: 3,760 Unknown: 10
Desert Scrubs: 5,190 Water: 10
Grasslands: 7,260 Woodlands and Forests: 1,050
Meadows and Marshes: 50 Developed or Disturbed Land: 510
2 This total includes 5,923 acres for Covered Activities, including planned roadways, in the Criteria Area that would be netted out of the MSHCP Conservation Area. The total Additional Reserve Lands will be 153,000 acres.
Total is not exact due to rounding.

Soils

Clay soils within the Plan Area include Bosanko, Auld, Altamont, and Porterville. In addition, areas from which clay had been mined (known as "claypit") were digitized. Within the Plan Area, clay soils support several sensitive plant species, including listed species such as Munz's onion (state threatened, federally endangered), thread-leaved brodiaea (state endangered, federally threatened), and San Diego button celery (state and federally endangered); and sensitive species such as Orcutt's brodiaea, long-spined spine flower, small-flowered morning glory, many-stemmed dudleya, Palmer's grapplinghook, graceful tarplant, and small-flowered microseris. The Domino-Traver-Willows soil association includes saline-alkali soils largely located along floodplain areas within the Plan Area. Sensitive plants supported by the Domino-Traver-Willows soil association include two listed species, the San Jacinto Valley crownscale (federally endangered) and the spreading navarretia (federally threatened); and sensitive plant species, including Parish's brittlescale, Davidson's saltscale, Coulter's goldfields, and vernal barley.

Within the clay soils areas, 31 percent of the total is conserved, including 12 percent within Additional Reserve Lands and 19 percent on existing Public/Quasi-Public Lands. Of these clay soils, 18 percent of Auld, 23 percent of Bosanko, 37 percent of Porterville, 10 percent of claypit, and 12 percent of Altamont are conserved either on Public/Quasi-Public Lands or captured within the Additional Reserve Lands. Within Domimo-Traver-Willows soils, 36 percent of the total is conserved, including 21 percent within the MSHCP Conservation Area and 15 percent on existing public lands. Within this soil association, 17 percent of Domino, 32 percent of Traver, and 74 percent of Willows soils are conserved either on Public/Quasi-Public Lands or within Additional Reserve Lands.

Patch Size

The individual sizes of patches comprising the MSHCP Conservation Area are important elements to the functioning of the conserved lands. It is generally agreed that large-sized patches encompass a greater portion of the landscape and allow for a greater inclusion of ecological niches, and that larger Core Areas offer greater resistance to catastrophic changes. However, while larger-sized Core Areas are usually considered better-functioning, widespread smaller satellite Core Areas can incorporate higher species diversity by efficiently preserving nodes of species of limited distribution. The MSHCP Conservation Area has both small and large areas in order to balance the need to conserve narrowly-distributed species and preserve the greatest number of species and protect habitat function with the least management effort.

The MSHCP Conservation Area is composed of approximately 575 patches. The spatial character of the MSHCP Conservation Area is complex with large numbers of small, spatially disjunct patches and small numbers of large connected patches. Sixty-five percent of these patches are less than ten acres in area and make up less than 0.25 percent of the areas to be conserved under the MSHCP. The vast majority of these small patches occur within areas heavily fragmented by urbanization in the Riverside Lowlands Bioregion and are represented by small patches of existing Public/Quasi-Public Lands. By contrast only 28 of the patches (5 percent) are greater than 1,000 acres but these make up 94 percent of the areas to be conserved under the MSHCP. A single connected block makes up the largest portion of the MSHCP Conservation Area at approximately 238,000 acres (50 percent of the acreage).

Edge Affected Land After Completion of Reserve Assembly

Increases in fragmentation of the landscape lead to increases in the area where urban/agricultural landscapes and native habitats interface. These areas of high fragmentation are subjected to Edge Effects, which are generally unfavorable and are ultimately due to nearby human activity. Some examples of Edge Effects include introduction/colonization of non-native species, increased predation, increased fire frequency, and small-scale environmental changes in temperature, light, and wind (Primack, 1993).

The MSHCP Conservation Area will be subjected to these Edge Effects due to urbanization within the Plan Area. For the purposes of estimating Edge Effects on habitat patches at completion of Reserve Assembly, each acre within the MSHCP Conservation Area (excluding urban and agricultural land) was placed into one of three categories based on proximity to urban/agricultural lands: strongly affected (1 to 250 feet from urban or agricultural land), somewhat affected (251 to 600 feet from urban or agricultural land), and not affected (more than 600 feet from urban or agricultural land).

From this analysis, it was found that 14 percent of the MSHCP Conservation Area will be strongly affected, 15 percent will be somewhat affected, and 71 percent will not be affected by Edge Effects. This large percentage of lands not likely to be exposed to Edge Effects is due to the effect of a small number of large habitat blocks. The strongly urban/agricultural areas of the Riverside Lowlands Bioregion and San Bernardino Mountains Bioregion have the greatest proportion of land that may be subject to Edge Effects.

3.2.3 Cores and Linkages within the MSHCP Conservation Area

The MSHCP Conservation Area is comprised of a variety of existing and proposed Cores, Extensions of Existing Cores, Linkages, Constrained Linkages and Non-contiguous Habitat Blocks. These features, generally referenced as Cores and Linkages, are depicted in Figure 3-2. The following definitions apply to the legend items shown on Figure 3-2.

Core A block of Habitat of appropriate size, configuration, and vegetation characteristics to generally support the life history requirements of one or more Covered Species. Although a more typical definition is population-related and refers to a single species (see Hunter 2002, Primack 2000), in the MSHCP this term is Habitat-related because of the multi-species nature of the MSHCP Plan.

Extension of Existing Core A block of Habitat contiguous with an existing Core Area which serves to provide additional Habitat for species in the adjacent existing Core and to reduce exposed edge.

Non-contiguous Habitat Block A block of Habitat not connected to other Habitat areas via a Linkage or Constrained Linkage.

Constrained Linkage A constricted connection expected to provide for movement of identified Planning Species between Core Areas, where options for assembly of the connection are limited due to existing patterns of use.

Linkage A connection between Core Areas with adequate size, configuration and vegetation characteristics to generally provide for "Live-In" Habitat and/or provide for genetic flow for identified Planning Species. Areas identified as Linkages in MSHCP may provide movement Habitat but not Live-In Habitat for some species, thereby functioning more as movement corridors. Since it is expected that every Linkage will provide Live-In Habitat for at least one species, and since the term "corridor" may be easily confused with the term as it is applied to transportation Corridors discussed in the CETAP portion of the RCIP, the term Linkage is used here. For a more thorough discussion of Linkage and movement corridors, see Section 3.1.4, Applicable Conservation Biology Principles.





The Cores and Linkages depicted in Figure 3-2 are based on the Conceptual Reserve Design developed for analytical purposes for the MSHCP. Likewise, the quantitative information presented with each Core or Linkage is based on the Conceptual Reserve Design. As described in Section 3.2.1 of this document, the Conceptual Reserve Design forms the basis for identifying target conservation acreages and generating quantitative data for the MSHCP biological analyses. The Conceptual Reserve Design is intended to describe one way in which the MSHCP Conservation Area could be configured consistent with MSHCP Criteria; it does not represent the only possible reserve that could be assembled consistent with the MSHCP Criteria. Flexibility is intended to be incorporated in the Reserve Assembly process to enable new information and data to be incorporated as part of the long-term MSHCP implementation process.

The tables in the text discussion present four categories of information for each Core or Linkage: Dimensions, Species, Adjacent Planned Land Uses, and Covered Activities.

1. Dimensional Data. Dimensional data include total acreage, edge, interior, P/A ratio, and distance to nearest Core. For Cores, Non-contiguous Habitat Blocks, and Extensions of Existing Cores, only total area, P/A ratio, and distance to the nearest connected Core are considered. For Linkages and Constrained Linkages, only total area, P/A ratio minimum/ maximum widths and lengths are considered.

Total area contained within a Core or Linkage was calculated based on the Conceptual Reserve Design and then was divided into area classified as edge and area classified as interior. To complete this edge analysis, a 250-foot buffer was created outside and adjacent to the Core or Linkage and designated "edge" area, while the remaining area was designated "interior." It is anticipated that these edge areas will incur greater "Edge Effects" due to nearby human activities such as lighting, urban runoff, toxics such as pesticides, or domestic predators. For the sake of simplicity, a 250-foot buffer was used, though in reality Edge Effects may decrease in a complex fashion, depending on species and type of Edge Effect, from the margin to the interior of the Core or Linkage (see Section 3.1.4 for a more thorough discussion of Edge Effects.). In addition, the extent to which a Core or Linkage is affected by edge varies as a function of the land use surrounding the Core or Linkage. For example, a Rural Mountainous land use designation in areas adjacent to a Linkage would give rise to far fewer Edge Effects than a city land use designation surrounding the Linkage. Land use designations surrounding each Core and Linkage are discussed in the individual Core and Linkage descriptions following the tables. Finally, Edge Effects are also species specific, since different species respond differently to Edge Effects.

The tables also present the distance to nearest connected Core and the perimeter-to-area (P/A) ratio of each Core or Linkage, as appropriate. Once a GIS coverage delineating Cores and Linkages was created, perimeters and areas were computed with GIS in order to determine the P/A ratio. Distance to nearest connected core was identified as the length of each linkage connecting the cores in question. From a biological perspective low P/A ratios are generally considered more favorable since low P/A ratios represent unfragmented habitat blocks with comparatively lower amounts of exposed edge. As the overall size of the Core or Linkage increases, however, the importance of this metric may decrease. In cases where more than one route through a Linkage is possible, the reader is referred to the text description of the Linkage.

Note: The sum of the areas for the proposed Cores and Linkages is 183,000 acres, a value above the target acreage of 153,000 acres of new Conservation on private lands. This difference arises as an artifact of the classification of each Core or Linkage as either "Proposed" (i.e., new, private Conservation) or "Existing" (i.e., Public/Quasi-Public Land) despite the fact that some Cores or Linkages contain a patchwork of Public/Quasi-Public Lands and private lands identified for potential acquisition. Thus, the additional 30,000 acres contained within the proposed Cores or Linkages reflects the inclusion of existing Public/Quasi-Public Lands within the proposed Cores and Linkages.

2. Planning Species. Planning Species considered for each Core or Linkage are also listed in the tables. Planning Species are subsets of Covered Species that are identified to provide guidance for Reserve Assembly in Cores and Linkages and/or Area Plans. Species listed in this column may include species which are not Planning Species for the area in question but which may have important or key populations located in the area.

3. Adjacent Proposed General Plan Land Use. Each table lists General Plan land uses proposed adjacent to the Core or Linkage, as defined by the County of Riverside General Plan. Proposed land uses include Agriculture, Community Development (including Community Centers), Open Space/Conservation, Cities, Rural (including Mountainous), Indian Lands, and Water. For specific descriptions of each of these categories, refer to the General Plan. Adjacent land uses are important because of the Edge Effects each exerts on each Core or Linkage. Community Development and Cities represent an urban level of Development with a high density of people and associated structures, vehicles, and activity. Agriculture and Rural (non-mountainous) represent land use designations with minimal structures and more open, vacant land. Rural Mountainous is typically an even lower-density land use due to steep slopes. Open space/Conservation lands are generally the most undeveloped, as they contain few, if any, structures and are specifically intended for the preservation of natural resources. Land use practices within these designations could affect resources within the Cores and Linkages due to issues such as those identified in Section 6.1.4 of this document. These issues include lighting, urban runoff, toxics such as pesticides, or domestic predators. MSHCP policies and procedures included in Section 6.0 of this document and in the global and species-specific objectives in Section 9.0 of this document will be implemented to ensure that the existing Habitat and movement functions of the Linkage are maintained as planned land uses are developed along the edge of the Linkage.

4. Major Covered Activities. Major Covered Activities that may affect the Cores and Linkages are also listed in the tables. These Covered Activities may include new facilities or widenings or extensions of existing facilities. Guidelines for Covered Activities presented in Section 7.0 of this document will be incorporated in the siting, design, construction and maintenance of these facilities to avoid and minimize effects of these facilities on Core and Linkage biological functions and values.

Quantitative data shown below for each Core and Linkage are based on the Conceptual Reserve Design. As noted in Section 3.3.1, the Conceptual Reserve Design was developed primarily for the purposes of developing quantitative information for the MSHCP species accounts and Area Plan Criteria. The Conceptual Reserve Design does not represent the only possible MSHCP Conservation Area that may be assembled during the long-term Reserve Assembly process. Flexibility is incorporated in the MSHCP to allow Reserve Assembly to be informed by project-specific data and planning as part of MSHCP implementation.

Index for Cores and Linkages

The Cores and Linkages are organized with their corresponding page numbers in this section as follows:

Existing Core A

Existing Core A consists of Prado Basin and the Santa Ana River, located in the northwest region of the Plan Area. This southwest-to-northeast trending swath of land is composed largely of Public/Quasi-Public Lands owned by a variety of entities, but it also contains a small number of privately-owned lands. The Core also functions as a Linkage, connecting Orange County to the west with San Bernardino County to the north. Existing Core A is connected to Existing Core B (Cleveland National Forest) via both and upland and a riparian connection (Proposed Constrained Linkage 1 and Proposed Constrained Linkage 2, respectively). This Core is constrained on all sides by existing urban development and agricultural use, and planned land uses surrounding the Core consist largely of high impact land uses such as city and community Development. Therefore, high quality riparian Habitat within the Core and along the edges must be maintained for species such as southwestern willow flycatcher, yellow warbler, yellow-breasted chat, western yellow-billed cuckoo, and others listed in the table below. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document. Maintenance of existing floodplain processes and water quality along the Santa Ana River is also important to Santa Ana River woollystar and arroyo chub. Management entities in this existing Core include: the County of Riverside Parks and Open Space District, U.S. Army Corps of Engineers, Orange County Water District, and California Department of Parks and Recreation.

EXISTING CORE A
Approximate Dimension Data for Core Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Core
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
10,740 1,640 9,100 33 1.7 Santa Ana sucker, arroyo chub, western pond turtle, Cooper's hawk, tricolored blackbird, burrowing owl, American bittern, cactus wren, northern harrier, western yellow-billed cuckoo, yellow warbler, white-tailed kite, southwestern willow flycatcher, California horned lark, peregrine falcon, yellow-breasted chat, loggerhead shrike, black-crowned night heron, osprey, double-crested cormorant, downy woodpecker, white-faced ibis, tree swallow, least Bell's vireo, bobcat, mountain lion, and Santa Ana River woollystar. City (Corona, Norco, Riverside), Community Development, Open Space/Conservation SR-71, River Road, Hammer, I-15, Schleisman, Van Buren, Mission, Market

Existing Core B

Existing Core B is composed of Cleveland National Forest, which lines the western border of the Plan Area. Within the Plan Area this Core consists of two large and two small blocks of Public/ Quasi-Public Lands. Existing Core B is connected to Existing Core A (Prado Basin/Santa Ana River) in the north via two Constrained Linkages (Proposed Constrained Linkage 1 and Proposed Constrained Linkage 2), in the center by Proposed Linkage 1 to the Lake Mathews/Estelle Mountain area, and in the south to the Tenaja Corridor (Proposed Linkage 9). This Core represents the second largest habitat block in the Plan Area and is located only 1.6 miles from the nearest connected Core. Studies of mountain lion movement within this Core indicated that this Core provides both Live-In and Linkage Habitat for this mammal, which requires very large blocks of intact Habitat. The Core then likely also provides linkage area for other mammals such as mountain lion and bobcat in addition to the species listed in the table below. Management entities in this existing Core include the U.S. Forest Service.

EXISTING CORE B
Approximate Dimension Data for Core Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Core
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
71,490 1,720 69,770 7 1.6
Cooper's hawk, southern California rufous-crowned sparrow, Bell's sage sparrow, golden eagle, turkey vulture, yellow warbler, mountain quail, downy woodpecker, purple martin, California spotted owl, tree swallow, mountain lion, Palmer's grapplinghook, prostrate spine flower, graceful tarplant, and small-flowered microseris. Rural Mountainous, Rural, Community Development, City (Lake Elsinore, Corona) SR-74

Existing Core C

Existing Core C consists of public lands in the Lake Mathews/Estelle Mountain area in the northwestern region of the Plan Area, originally assembled as a Core Reserve for the Stephens' Kangaroo Rat Habitat Conservation Plan. Connections to other MSHCP conserved lands exist to the east (Proposed Linkage 3) and west (Proposed Extension of Existing Core 2). This Core is somewhat constrained by existing agriculture to the north and south of the Core; however some natural lands remain along the border of the Core. A large portion of the western border of Existing Core C is contiguous with Proposed Extension of Existing Core 2, which markedly decreases amount of exposed edge and results in a lower actual P/A ratio than that reported in the table below. This Core provides Live-In Habitat for a large number of species as well as linkage area for species moving from the Gavilan Hills area to Temescal Wash. In addition to Stephens' kangaroo rat, the Lake Mathews/Estelle Mountain Reserve contains Habitat for other species with requirements for high quality Habitat, such as Quino checkerspot butterfly and coastal California gnatcatcher. Although the Core is surrounded largely by a rural planned land use designation, in areas where community Development is planned, treatment and management of edge conditions along the borders of this Core will be necessary to ensure that it provides Habitat and movement functions for species using the Core. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document. Management entities in this existing Core include the Lake Mathews/Estelle Mountain Reserve Management Committee.

EXISTING CORE C
Approximate Dimension Data for Core Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Core
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
15,610 890 14,720 19 1.6 southern California rufous-crowned sparrow, Bell's sage sparrow, burrowing owl, cactus wren, northern harrier, white-tailed kite, loggerhead shrike, coastal California gnatcatcher, Stephens' kangaroo rat, bobcat, mountain lion, Munz's onion, slender-horned spine flower, and many-stemmed dudleya. Rural, Rural Mountainous, Community Development Hemet to Corona/Lake Elsinore, CETAP Corridor

Existing Core D

Existing Core D consists of Sycamore Canyon Park. This Core is composed of two Non-contiguous Habitat Blocks of Public/Quasi-Public Land separated by approximately 2,000 feet, in approximately the north-central region of the Plan Area. Existing Core D is connected to Existing Noncontiguous Habitat Block A (Box Springs Mountains) via Proposed Constrained Linkage 7. At 10.8 miles from the nearest connected Core, Existing Core D is the most isolated of all proposed or existing Cores. The Core is also surrounded by City and Community Development planned land use designations. For these reasons, treatment and management of edge conditions along this Core will be necessary to ensure that it provides Habitat and movement functions for species using the Core. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document. The Core provides Live-In Habitat for the granite spiny lizard, a species requiring rock outcrops, and likely provides movement Habitat for bobcat. Management entities in this existing Core include the City of Riverside Park and Recreation Department and March Joint Powers Authority.

EXISTING CORE D
Approximate Dimension Data for Core Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Core
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
2,500 560 1,940 43 10.8 Wilson's warbler City (Riverside), Community Development Alessandro Blvd.

Existing Core E

Existing Core E consists of Lake Elsinore, located in the west-central region of the Plan Area. Existing Core E is connected to other MSHCP conserved lands via Proposed Extension of Existing Core 3 (Lake Elsinore Soils). This Core provides Live-In Habitat for species as noted in the table below and also likely provides for movement of common mammals such as bobcat. Urban Development partially constrains the Core; however some natural lands remain along the border of the Core. Since this is an existing Core with no new Reserve Assembly anticipated, treatment and management of edge conditions along this Core will be necessary to ensure that it provides Habitat and movement functions for species using the Core. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1.4 of this document.

EXISTING CORE E
Approximate Dimension Data for Core Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Core
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
3,010 280 2,730 20 4.4 Cooper's hawk, tricolored blackbird, southern California rufous-crowned sparrow, burrowing owl, American bittern, ferruginous hawk, Swainson's hawk, mountain plover, northern harrier, yellow warbler, white-tailed kite, California horned lark, peregrine falcon, bald eagle, yellow-breasted chat, loggerhead shrike, black-crowned night heron, mountain quail, osprey, double-crested cormorant, white-faced ibis, purple martin, tree swallow, least Bell's vireo, San Jacinto Valley crownscale, prostrate spine flower, Palmer's grapplinghook, and Engelmann oak. City (Elsinore), Open Space, Conservation None

Existing Core F

Existing Core F consists of the Santa Rosa Plateau Ecological Reserve, located in the southwest region of the Plan Area. Existing Core F is connected to other MSHCP conserved lands via several Linkages: Proposed Constrained Linkage 13 (Murrieta Creek) and Proposed Linkage 10 connect the Core to conserved lands in the southeast, Proposed Constrained Linkages 11 (De Luz Canyon) and 12 (Sandia Canyon) connect the Core to San Diego County in the south, and Proposed Linkage 9 (Tenaja Corridor) connects the Core to Existing Core B in the west. This Core represents a large habitat block with a relatively low proportion of its area potentially affected by edge (approximately 460 acres of the total 8,360 acres) and a comparatively low P/A ratio. Furthermore, much of the Core is surrounded by a Rural Mountainous land use designation, which will further lower Edge Effects at the borders of the Core. For these reasons Existing Core F can be expected to provide high quality movement and Live-In Habitat for the species listed in the table below. Maintenance of hydrological processes and water quality will be necessary, however, to provide Habitat for persistence of species such as vernal pool fairy shrimp, thread-leaved brodiaea, Orcutt's brodiaea, western pond turtle, vernal barley, Riverside fairy shrimp, Santa Rosa Plateau fairy shrimp, and California red-legged frog. Management entities in this existing Core include: The Nature Conservancy, County of Riverside and California Department of Parks and Recreation.

EXISTING CORE F
Approximate Dimension Data for Core Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Core
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
8,360 460 7,900 14 4.2 vernal pool fairy shrimp, Santa Rosa Plateau fairy shrimp, Riverside fairy shrimp, California red-legged frog, western pond turtle, Cooper's hawk, sharp-shinned hawk, grasshopper sparrow, burrowing owl, cactus wren, turkey vulture, northern harrier, yellow warbler, southwestern willow flycatcher, California horned lark, merlin, loggerhead shrike, Lincoln's sparrow, MacGillivray's warbler, mountain quail, California spotted owl, Nashville warbler, Wilson's warbler, San Diego pocket mouse, bobcat, mountain lion, Rainbow manzanita, thread-leaved brodiaea, Orcutt's brodiaea, long-spined spine flower, San Diego button celery, graceful tarplant, vernal barley, California black walnut, Parish's meadowfoam, Palomar monkeyflower, little mousetail, spreading navarretia, California Orcutt grass, Fish's milkwort, Engelmann oak, and San Miguel savory. Rural Mountainous, City (Murrieta) Clinton Keith Road

Existing Core G

Existing Core G is comprised of the Santa Margarita Ecological Reserve. This Core Area provides Live-In Habitat for species noted below and may serve as a Linkage for Planning Species, including bobcat and mountain lion, moving between the Santa Ana Mountains and the Agua Tibia Wilderness. In addition to maintenance of habitat quality, maintenance of existing floodplain processes along Santa Margarita River is important for these species. Adjacent land use practices which may affect movement of species through this Core include construction of barriers (i.e., fencing). Proposed widening activities of I-15 may also affect movement of wildlife species connecting to this Core Area, as well as water quality and floodplain processes of the Santa Margarita River. Because the distance to the Santa Rosa Plateau, the nearest connected Core Area, is 5.5 miles, maintenance of the connection to the Santa Rosa Plateau is important for species persistence, viability and dispersal. Management entities in this existing Core include: California State University, San Diego, The Nature Conservancy, and California Department of Fish and Game.

EXISTING CORE G
Approximate Dimension Data for Core Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Core
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
4,500 340 4,160 17 5.5 arroyo chub, southern California rufous-crowned sparrow, Bell's sage sparrow, bobcat, mountain lion, and Rainbow manzanita. Rural Mountainous I-15 widen existing facility

Existing Core H

Existing Core H is comprised of Lake Perris State Recreation Area, San Jacinto Wildlife Area, private lands and lands with pre-existing conservation agreements. It provides Live-In Habitat for certain species, contains soils suitable for some Narrow Endemic Plant Species, supports vernal pool complexes and may provide a connection to Core Areas in the Badlands and the middle reach of the San Jacinto River. Planning Species for which Habitat is provided within this Core Area include bobcat, Los Angeles pocket mouse, Stephens' kangaroo rat, smooth tarplant, San Jacinto Valley crownscale, spreading navarretia, California Orcutt grass, vernal barley and thread-leaved brodiaea. Maintenance of habitat quality, floodplain process along the San Jacinto River, and Conservation of vernal pool complexes are important for these species. This Core Area likely provides for Live-In Habitat for small rodents and common mammals, including bobcat and San Diego black-tailed jackrabbit.

EXISTING CORE H
Approximate Dimension Data for Core Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Core
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
17,470 1,070 16,400 12 0 western spadefoot, western pond turtle, coastal western whiptail, Belding's orange-throated whiptail, San Diego banded gecko, northern red diamond rattlesnake, San Diego horned lizard, granite spiny lizard, granite night lizard, burrowing owl, Cooper's hawk, sharp-shinned hawk, Southern California rufous-crowned sparrow, grasshopper sparrow, Bell's sage sparrow, golden eagle, American bittern, ferruginous hawk, Swainson's hawk, cactus wren, turkey vulture, yellow warbler, white-tailed kite, southwestern willow-flycatcher, peregrine falcon, bald eagle, yellow-breasted chat, loggerhead shrike, Lincoln's sparrow, black-crowned night heron, MacGillivray's warbler, osprey, double-crested cormorant, downy woodpecker, purple martin, tree swallow, northwestern San Diego pocket mouse, Stephens' kangaroo rat, San Diego black-tailed jackrabbit, bobcat, San Diego desert woodrat, Los Angeles pocket mouse, San Jacinto Valley crownscale, Davidson's saltscale, thread-leaved brodiaea, smooth tarplant, Coulter's goldfields, spreading navarretia, and Wright's trichocoronis. Agriculture, Community Development, Cities (Moreno Valley and Perris) Gilman Springs Road, Ramona Express-way, Bridge Street, CETAP Hemet to Corona/Lake Elsinore Alternative 1b.

In addition to indirect effects described in Section 6.0 of this document, other effects associated with locating the proposed General Plan land use designations noted in the table below may occur. Alteration of hydrology or fire suppression activities occurring on adjacent lands may adversely affect Narrow Endemic Plant Species, including spreading navarretia, San Jacinto Valley crownscale, vernal barley and smooth tarplant, known to occur in the vicinity of Mystic Lake and the San Jacinto Wildlife Refuge Area.

The three roadways listed in the table below are existing roadways that are proposed to be widened along the edge of the Core Area. The CETAP corridor, if approved, would generally follow Ramona Expressway. Proposed widening activities may directly affect Habitat or floodplain processes important to the species noted in the table below or may affect movement between this Core Area and other Core Areas in the Badlands and along the San Jacinto River. Ramona Expressway and Bridge Street cross the San Jacinto River under existing conditions and would continue to cross the river with proposed widenings. Management entities in this existing Core include the California Department of Parks and Recreation and California Department of Fish and Game.

Existing Core I

Existing Core I is comprised of the portion of the San Bernardino Mountains located within the MSHCP Plan Area. This Core Area provides potential nest sites, foraging Habitat, a connection to the portion of the San Bernardino Mountains in San Bernardino County and harbors key populations of certain species. Planning Species for which Habitat is provided for within this Core Area include mountain lion, San Bernardino mountain kingsnake, and California spotted owl. Maintenance of habitat quality and large intact interconnected habitat blocks are important for these species. In addition to the indirect effects described in Section 6.0 of this document, other activities associated with proposed adjacent General Plan land use designations noted in the table below, including recreation and poaching, may result in adverse effects to biological resources within the Core. Management entities in this existing Core include the U.S. Forest Service.

EXISTING CORE I
Approximate Dimension Data for Core Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Core
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
9,610 920 8,690 22 0.7* San Bernardino mountain kingsnake, San Diego mountain kingsnake, Lincoln's sparrow,
MacGillivray's warbler, mountain quail, Williamson's sapsucker, California spotted owl, Nashville warbler, Wilson's warbler, mountain lion, Plummer's mariposa lily, peninsular spine flower, and Hall's monardella.
Indian Lands, Community Development,City (Banning) None

Note:*This Core is not connected to other MSHCP conserved lands. Distance "as the crow flies" to nearest habitat block is reported in table.

Existing Core J

Existing Core J is comprised of Diamond Valley Lake, Lake Skinner and Johnson Ranch. It provides potential nest sites, foraging Habitat, connections to other Core Areas in French Valley, Cactus Valley and Wilson Valley, and harbors key populations of certain species. Planning Species for which Habitat is provided for within this Core Area include bobcat, mountain lion, coastal California gnatcatcher, least Bell's vireo, northern harrier, tree swallow, turkey vulture, white-tailed kite, Quino checkerspot butterfly, and Stephens' kangaroo rat. In addition to maintenance of habitat quality, maintenance of existing floodplain processes along Tucalota Creek and Rawson Canyon is important for these species. This Core Area likely provides for Live-In Habitat for common mammals, including bobcat, and larger mammals such as mountain lion moving through the Core Area to other Core Areas in Wilson Valley and Cactus Valley. Since this is an existing Core and no new Reserve Assembly is anticipated, maintenance of existing large intact habitat blocks will be necessary for species persistence and movement in this Core .

EXISTING CORE J
Approximate Dimension Data for Core Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Core
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
24,360 900 23,460 12 1.11 Quino checkerspot butterfly, southern California rufous-crowned sparrow, grasshopper sparrow, Bell's sage sparrow, golden eagle, burrowing owl, cactus wren, turkey vulture, mountain plover, northern harrier, white-tailed kite, coastal California gnatcatcher, tree swallow, least Bell's vireo, bobcat, Los Angeles pocket mouse, mountain lion and long-spined spine flower. Community Development, Rural, Rural Mountainous Rawson Road, Borel Road, and Butterfield Stage Road

In addition to indirect effects described in Section 6.0 of this document, other adverse effects associated with locating proposed General Plan land uses noted in the table below may occur. Fire and fire suppression, hunting, and collection of species by humans would result in adverse effects to Quino checkerspot butterfly and other Planning Species . Major Covered Activities listed in the table below may affect resources in the Core Area by directly affecting Habitat and/or floodplain processes important to the species noted above or result in habitat fragmentation of this Core Area. Rawson Road and Borel Road are existing roadways that are proposed to widened within the Core Area. Rawson Road crosses Rawson Canyon Creek under existing conditions and would continue to cross this creek with the proposed widening. Butterfield Stage Road forms the western boundary of Johnson Ranch would be extended north from the city limits of Temecula. Management entities in this existing Core include the Southwestern Riverside County Multi-Species Reserve Management Committee and County of Riverside Parks and Open Space District (Lake Skinner Recreation Area).

Existing Core K

Existing Core K is comprised of the San Bernardino National Forest and the Potrero Area of Critical Environmental Concern. It provides nesting, breeding, foraging and Live-In Habitat for a number of species, supports several Narrow Endemic Plant Species and connects to the eastern portions of Riverside County. Planning Species for which Habitat is provided within this Core include peninsular spine flower, San Bernardino kangaroo rat, slender-horned spine flower, graceful tarplant, mountain lion, California spotted owl, granite spiny lizard, Johnston's rock cress, western pond turtle and Stephens' kangaroo rat. Maintenance of habitat quality and maintenance of existing large intact habitat blocks are important for these species. This Core likely provides for Live-In Habitat for common mammals, including bobcat, and larger mammals such as mountain lion moving through the Core Area to other Core Areas in Wilson Valley and Cactus Valley. In addition to indirect effects associated with Adjacent Proposed
General Plan
Land Use designation described in Section 6.1.4 of this document, other activities such as off-road vehicle use, recreation and hunting may result in adverse effects. Management entities in this existing Core include the U.S. Forest Service and Bureau of Land Management.

EXISTING CORE K
Approximate Dimension Data for Core Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Core
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
149,750 3,160 146,590 6 0* western pond turtle, northern red diamond rattlesnake, San Bernardino Mountain kingsnake, San Diego Mountain kingsnake, Cooper's hawk, northern goshawk, golden eagle, turkey vulture, black swift, yellow warbler, Lincoln's sparrow, Macgillvray's warbler, mountain quail, downy woodpecker, purple martin, Williamson's sapsucker, California spotted owl, tree swallow, Nashville warbler, Wilson's warbler, San Bernardino kangaroo rat, Stephens' kangaroo rat, mountain lion, Johnston's rock cress, Munz's mariposa lily, Plummer's mariposa lily, peninsular spine flower, slender-horned spine flower, San Jacinto Mountains bedstraw, California bedstraw, Mojave tarplant, graceful tarplant, Hall's monardella, California beardtongue Rural and Rural Mountainous SR-243, SR-74, SR-371, and Bautista Canyon Road

Note: *This Core is contiguous with Proposed Core 3, Proposed Core 4, Proposed Core 5, and Proposed Core 7.

All four major Covered Activities that are proposed to be widened are existing roadways. Proposed widening activities may directly affect Habitat important to the species noted above, and may exacerbate indirect effects, including lighting, noise, road-kill, trash and runoff, associated with an increased number of motor vehicles traveling through the Core.

Existing Core L

Existing Core L is comprised of Beauty Mountain Management Area (BLM) and Anza-Borrego Desert State Park. This Core provides Habitat for several listed species and connections to San Diego County and eastern Riverside County. Planning Species for which Habitat is provided within this Core include Quino checkerspot butterfly, Stephens' kangaroo rat, golden eagle nest site, burrowing owl, Los Angeles pocket mouse, bobcat, mountain lion, and Aguanga kangaroo rat. Maintenance of habitat quality is important for these species, and maintenance of existing large intact habitat blocks will be necessary to perpetuate species occupation and movement in this Core. This Core likely provides for Live-In Habitat for common mammals, including bobcat, and larger mammals such as mountain lion moving through the Core Area to other Core Areas in Wilson Valley and San Diego County. In addition to indirect effects of adjacent land uses described in Section 6.0 of this document, other activities associated with locating proposed General Plan land use designations noted in the table below, including hunting, collection, recreation, off-road vehicle use and poaching, may result in adverse effects to Planning Species.

EXISTING CORE L
Approximate Dimension Data for Core Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Core
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
24,750 590 24,160 12 0* Quino checkerspot, Bell's sage sparrow, golden eagle nest site, cactus wren, coastal California gnatcatcher, least Bell's vireo, Aguanga kangaroo rat, Stephens' kangaroo rat, bobcat, Los Angeles pocket mouse, and mountain lion, . Rural, Agriculture and Indian Lands None

Note: * This Core is contiguous with Proposed Core 6 and Proposed Core 7.

No major Covered Activities are anticipated to traverse or affect this Core. Any road improvements or maintenance activities to existing roadways will be subject to guidelines for improvements on existing roads in Section 7.0 of this document to ensure that the Habitat and functions of the Core are maintained. Management entities in this existing Core include the Bureau of Land Management and California Department of Parks and Recreation.

Existing Core M

Existing Core M consists of the Agua Tibia Mountains, located along the south-central border of the Plan Area. Existing Core M is connected to other MSHCP conserved lands in the north via Proposed Linkages 17 (Woodchuck Road) and 18 (Arroyo Seco Creek) and Proposed Core 7 (Wilson Valley/Aguanga). Existing Core M is not constrained by existing urban development or agricultural uses. A very low proportion (approximately 180 acres of the 10,460 total acres) of the area of the Core is affected by edge, and the P/A ratio is also comparatively very low. Thus the Core can be expected to provide high quality movement and Live-In Habitat for the species listed in the table below. Additionally, a large portion of the border of Existing Core M is contiguous with Proposed Core 7 (Wilson Valley/Aguanga), which markedly decreases actual amount of exposed edge and ostensibly lowers the P/A ratio reported in the table. Management entities in this existing Core include the U.S. Forest Service.

EXISTING CORE M
Approximate Dimension Data for Core Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Core
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
10,460 180 10,280 14 3 western pond turtle, granite night lizard, mountain lion, Jaeger's milk vetch, Nevin's barberry, Vail Lake ceanothus, long-spined spine flower, prostrate spine flower, beautiful hulsea, ocellated Humboldt lily, Palomar monkeyflower, and Hall's monardella. Indian Lands, Open Space/ Conservation, Rural, Rural Mountainous SR-79

Proposed Extension of Existing Core 1

Proposed Extension of Existing Core 1 (Prado Basin Extension) consists of private land located along the northwestern border of the Plan Area. This extension is present as two disjunct parcels in close proximity which serve to extend Existing Core A (Prado Basin/Santa Ana River). Proposed Extension of Existing Core 1 is connected only to Existing Core A within the Plan Area. In addition to adding to the functional area of Existing Core A, the presence of Proposed Extension of Existing Core 1 lowers the potential for Edge Effects in the area. Key populations of western yellow-billed cuckoo, southwestern willow flycatcher, Cooper's hawk, downy woodpecker, American bittern, black-crowned night heron, California horned lark, least Bell's vireo, tree swallow, white-tailed kite, and yellow warbler are supported by Proposed Extension of Existing Core 1. This area is also likely to be important for mountain lion movement from the Santa Ana Mountains to the Chino Hills beyond the Plan Area and is thought to provide for local movement of common mammals such as bobcat.

PROPOSED EXTENSION OF EXISTING CORE 1
Approximate Dimension Data for Core Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Core
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
270 0* 270 80 N/A Santa Ana sucker, arroyo chub, western pond turtle, Cooper's hawk, tricolored blackbird, American bittern, cactus wren, northern harrier, western yellow-billed cuckoo, yellow warbler, white-tailed kite, southwestern willow flycatcher, California horned lark, peregrine falcon, yellow-breasted chat, black-crowned night heron, double-crested cormorant, downy woodpecker, white-faced ibis, tree swallow, least Bell's vireo, and bobcat. Open Space/ Conservation None

Note: * This Noncontiguous Habitat Block is completely surrounded by Existing Core A and thus contains no edge.

Proposed Extension of Existing Core 2

Proposed Extension of Existing Core 2 (Lake Mathews/Estelle Mountain Extension) consists of private lands located in the western region of the Plan Area. This extension is contiguous with Existing Core C (Lake Mathews/Estelle Mountain) along the length of its eastern border and serves to extend the Habitat in the Lake Mathews/Estelle Mountain area and smooth out edges along the border of this Core. Proposed Extension of Existing Core 2 is also connected to Proposed Constrained Linkage 4 (North Temescal Wash) in the north; and Proposed Linkage 1 and Proposed Constrained Linkages 3, 5 (Horsethief Canyon), and 6 (Temescal Wash south) in the south. The extension provides Habitat for species as listed in the table below, and also provides for movement of species. The Lake Mathews/Estelle Mountain Extension supports populations of coastal California gnatcatcher; thus high quality, connected Habitat must be maintained in this area which is surrounded by city (Corona) and community Development planned land uses. In addition, the proposed Hemet to Corona/Lake Elsinore CETAP Corridor Alternative 1B intersects the extension and may contribute to Edge Effects, if chosen. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

PROPOSED EXTENSION OF EXISTING CORE 2
Approximate Dimension Data for Core Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Core
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
8,100 540 7,560 29 N/A Cooper's hawk, southern California rufous-crowned sparrow, Bell's sage sparrow, yellow warbler, white-tailed kite, southwestern willow flycatcher, yellow-breasted chat, loggerhead shrike, downy woodpecker, coastal California gnatcatcher, least Bell's vireo, Stephens' kangaroo rat, bobcat, mountain lion, Munz's onion, long-spined spine flower, and many stemmed dudleya. City (Corona), Community Development, Rural Hemet to Corona/ Lake Elsinore, CETAP Corridor, Alternative 1B

Proposed Extension of Existing Core 3

Proposed Extension of Existing Core 3 (Lake Elsinore Soils) consists of two blocks of land extending from the southern border of Existing Core E (Lake Elsinore). The northern portion of the proposed extension is also connected to Proposed Linkage 8. Proposed Extension of Existing Core 3 conserves soils of the Traver series, which is important to the maintenance of several species of Narrow Endemic Plants. The northern portion of the extension also provides for movement of species along the lower San Jacinto River to Proposed Linkage 8. Together with Existing Core E, Proposed Extension of Existing Core 3 provides Habitat for shorebird use. Since surrounding land uses include city (Lake Elsinore) and community Development, management of edge conditions in this area will be necessary to maintain high quality Habitat in this area. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

PROPOSED EXTENSION OF EXISTING CORE 3
Approximate Dimension Data for Core Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Core
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
1,290 410 880 63 N/A Riverside fairy shrimp, Quino checkerspot butterfly, western pond turtle, Bell's sage sparrow, American bittern, mountain plover, northern harrier, white-tailed kite, southwestern willow flycatcher, loggerhead shrike, black-crowned night heron, osprey, double-crested cormorant, white-faced ibis, least Bell's vireo, bobcat, Munz's onion, San Diego ambrosia, and smooth tarplant. City (Lake Elsinore), Community Develop-ment, Rural, Open Space/Conservation None

Proposed Extension of Existing Core 4

Proposed Extension of Existing Core 4 is comprised of the middle reach of the San Jacinto River and is contiguous with Core Area in Lake Perris Recreation Area. It provides Habitat for a number of Narrow Endemic Plant Species and movement for species connecting to Lake Perris and areas downstream of the San Jacinto in Canyon Lake. Planning Species for which Habitat is provided for within this proposed Extension of Existing Core include San Jacinto Valley crownscale, thread-leaved brodiaea, arroyo toad and Los Angeles pocket mouse. Maintenance of floodplain processes along the San Jacinto River, as well as maintenance of habitat quality of vernal pool complexes and the Traver-Willow-Domino soils supporting plant species noted in the table below, are important for these species. As shown on the table below, areas not affected by edge total approximately 2,890 acres of the total 3,330 acres occupied by this Extension of Existing Core. Since this Extension of Existing Core may be affected by edge, treatment and management of edge conditions will be necessary to ensure that it provides Habitat and movement functions for species using this Core. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document. Flood control activities associated with the Community Development land use designation and major Covered Activities may adversely affect Planning Species known to occur within the San Jacinto River.

PROPOSED EXTENSION OF EXISTING CORE 4
Approximate Dimension Data for Core Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Core
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
3,330 440 2,890 25 N/A arroyo toad, mountain plover, white-faced ibis, Los Angeles pocket mouse, San Jacinto Valley crownscale, Davidson's saltscale, thread-leaved brodiaea, Coulter's goldfields, Wright's trichocoronis, and spreading navarretia. Community Development Ramona Express-way, Nuevo Road, Ethanac Road, and San JacintoRoad

Proposed Extension of Existing Core 5

Proposed Extension of Existing Core 5 consists of upland Habitat adjacent to Core Areas in Lake Skinner and Johnson Ranch. This extension occurs as two disjunct parcels which serve to extend Core Areas in Johnson Ranch and Lake Skinner and reduce the amount of area exposed to Edge Effects. This Extension of Existing Core would contribute to Conservation of species occurring within Core Areas in Diamond Valley Lake, Lake Skinner, and Johnson Ranch, such as mountain lion, bobcat, coastal California gnatcatcher, Quino checkerspot butterfly and Stephens' kangaroo rat. It would also broaden the connection between Johnson Ranch and Lake Skinner. Maintenance of habitat quality and contiguity with adjacent Core Areas is important for these species.

Major Covered Activities that may affect this area include Butterfield Stage Road which would be extended north from the city limits of Temecula.

PROPOSED EXTENSION OF EXISTING CORE 5
Approximate Dimension Data for Core Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Core
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
295 65 230 91 N/A Quino checkerspot, southern California rufous-crowned sparrow, grasshopper sparrow, Bell's sage sparrow, coastal California gnatcatcher, bobcat, and Los Angeles pocket mouse. Rural Butterfield Stage Road

Proposed Extension of Existing Core 6

Proposed Extension of Existing Core 6 consists of upland Habitat immediately southwest of Core Areas in Lake Skinner and Johnson Ranch. This extension is contiguous with Core Area to the north in Lake Skinner and to west in Johnson Ranch. This Extension of Existing Core would contribute to Conservation of species occurring within the Core Areas in Diamond Valley Lake, Lake Skinner, and Johnson Ranch, including mountain lion, bobcat, coastal California gnatcatcher, Quino checkerspot butterfly and Stephens' kangaroo rat. It would also broaden the connection between Johnson Ranch and Lake Skinner. Maintenance of habitat quality and contiguity with adjacent Core Areas is important for these species. In addition to indirect effects of adjacent land uses described in Section 6.0 of this document, runoff and the use of toxics associated with agricultural planned land use located adjacent to MSHCP Conservation Areas may adversely affect species noted in the table below.

The proposed widening improvements to major Covered Activities, including Borel Road and Buck Road, may directly affect Habitat or result in habitat fragmentation.

PROPOSED EXTENSION OF EXISTING CORE 6
Approximate Dimension Data for Core Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Core
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
1,175 85 1,090 31 N/A Quino checkerspot butterfly, southern California rufous-crowned sparrow, grasshopper sparrow, Bell's sage sparrow, golden eagle nest site, burrowing owl, cactus wren, turkey vulture, mountain plover, northern harrier, white-tailed kite, coastal California gnatcatcher, tree swallow, least Bell's vireo, Stephens' kangaroo rat, bobcat, Los Angeles pocket mouse, and mountain lion. Agriculture Borel Road and Buck Road

Proposed Extension of Existing Core 7

Proposed Extension of Existing Core 7 consists of areas contiguous with Diamond Valley Lake to the west. It contributes to Conservation of Planning Species such as coastal California gnatcatcher, mountain lion and Quino checkerspot butterfly, and provides a connection to upland and wetland Linkages in the Domenigoni Specific Plan Area and French Valley Creek, respectively. Maintenance of habitat quality and contiguity with Diamond Valley Lake are important for these species.

Rawson Road is an existing roadway that is proposed to be widened. The proposed improvements to Rawson Road may directly affect Habitat and/or result in habitat fragmentation.

PROPOSED EXTENSION OF EXISTING CORE 7
Approximate Dimension Data for Core Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Core
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
3,220 130 3,090 27 N/A Quino checkerspot butterfly, southern California rufous-crowned sparrow, grasshopper sparrow, Bell's sage sparrow, golden eagle nest site, cactus wren, turkey vulture, mountain plover, northern harrier, white-tailed kite, coastal California gnatcatcher, tree swallow, least Bell's vireo, Stephens' kangaroo rat, bobcat, Los Angeles pocket mouse, and mountain lion. Community Development Rawson Road

Existing Constrained Linkage A

Existing Constrained Linkage A consists of lands in conservation easement in the Skunk Hollow area. This Public/Quasi-Public Linkage exists as two nearly elliptical blocks separated by approximately 330 feet in the south-central region of the Plan Area. The presence of these lands in the MSHCP decreases the gap between the Proposed Core 2 (Antelope Valley) to the west of the Linkage and the Johnson Ranch section of Existing Core J to the east of the Linkage. This Linkage is constrained by existing agriculture on all sides of the Linkage that are not connected to other MSHCP Conservation Area lands. This Linkage likely provides for movement of common mammals such as bobcat. As shown in the table below, areas not affected by edge within this Linkage total approximately 230 acres of the approximately 310 total acres of the Linkage. This represents a relatively high proportion of area not affected by edge compared to other MSHCP Constrained Linkages; therefore this area likely functions as a small block of Core Area. Nonetheless, as the planned land uses surrounding Existing Constrained Linkage A include city (Temecula) and community Development, treatment and management of edge conditions along this Linkage will be necessary to ensure that it provides Habitat and movement functions for species using the Linkage. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

EXISTING CONSTRAINED LINKAGE A
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
310 80 230 85 vernal pool fairy shrimp, Riverside fairy shrimp, San Diego Ambrosia, small-flowered morning glory, Palmer's grapplinghook, spreading navarretia, and California Orcutt grass. Community Development, City (Temecula), Open Space/ Conservation Leon Road

Existing Constrained Linkage B

Existing Constrained Linkage B is comprised of Salt Creek. This Linkage provides Habitat for species and also provides for movement of species from the Hemet area in the east, through the central region of the Plan Area, to Canyon Lake in the west. This Linkage is constrained by existing urban and agriculture along both the northern and southern edges of the Linkage. As shown in the table below, areas not affected by edge within this Linkage total approximately 5 acres of the approximately 325 total acres of the Linkage. The Linkage also possesses the second largest P/A ratio of all Linkages and Constrained Linkages and is surrounded by planned land uses designated City and Community Development, indicating that the potential for Edge Effects in this Linkage is extremely high. Therefore, treatment and management of edge conditions along this Linkage will be necessary to ensure that it provides Habitat and movement functions for species using the Linkage. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document. In addition, maintenance of existing floodplain processes along Salt Creek is important for a number of the Narrow Endemic Plant Species listed in the table below. MSHCP policies and procedures included in Section 6.0 of this document will be implemented to ensure that the existing Habitat and movement functions of the Linkage are maintained as planned land uses are developed along the edge of the Linkage. Management entities in this existing Constrained Linkage include the Riverside County Flood Control and Water Conservation District.

EXISTING CONSTRAINED LINKAGE B
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
325 320 5 329 vernal pool fairy shrimp, Riverside fairy shrimp, Los Angeles pocket mouse, San Jacinto Valley crownscale, Parish's brittlescale, Davidson's saltscale, thread-leaved brodiaea, smooth tarplant, vernal barley, Coulter's goldfields, little mousetail, spreading navarretia, California Orcutt grass, and Wright's trichocoronis. Community Development, City (Hemet) Hemet to Corona/Lake Elsinore, CETAP Corridor, Briggs Road, Leon Road, Highway 79 Realignment Corridor

Existing Constrained Linkage C

Existing Constrained Linkage C consists of the middle segment of the San Jacinto River, located in the northeast region of the Plan Area. This Public/Quasi-Public Linkage connects Proposed Core 5 in the east (upper San Jacinto River area) with Proposed Constrained Linkage 20 to the west. It is also connected to Proposed Core 3 (Badlands/Potrero area) via Proposed Constrained Linkage 21. Like Existing Constrained Linkage B (Salt Creek), Existing Constrained Linkage C is constrained on all sides by existing Development, has large amounts of area potentially affected by edge (approximately 240 acres of the total 245 acres), and possesses a high P/A ratio (230 feet per acre). However, unlike Salt Creek, this Constrained Linkage is largely surrounded by an open space/ conservation planned land use. Thus Edge Effects may not affect the Linkage to such a strong degree. In areas of the Linkage bordering a planned land use designated city, however, treatment and management of edge conditions along the Linkage will still be necessary to ensure that it provides Habitat and movement functions for species using the Linkage. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document. Furthermore, maintenance of existing floodplain processes along the San Jacinto River is important for a number of the Narrow Endemic Plant Species listed in the table below.

EXISTING CONSTRAINED LINKAGE C
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
245 240 5 230 arroyo toad, Los Angeles pocket mouse, mountain plover, white-faced ibis, San Jacinto Valley crownscale, Parish's brittlescale, Davidson's saltscale, thread-leaved brodiaea, Coulter's goldfields, and spreading navarretia. Open Space/ Conservation, City (San Jacinto) Highway 79 Realignment Corridor

Existing Constrained Linkage D

Existing Constrained Linkage D is comprised of Bautista Creek. This Linkage provides Habitat for species noted below, movement of species along the San Jacinto River, and a connection to Cactus Valley and the San Jacinto Mountains. This Linkage is constrained by proposed General Plan Community Development designation along both sides of this existing Linkage. Planning Species, for which Habitat is provided within this Linkage, include least Bell's vireo, southwestern willow flycatcher, arroyo toad, western pond turtle, mountain yellow-legged frog, San Bernardino kangaroo rat, and slender-horned spine flower. In addition to maintenance of habitat quality, maintenance of existing floodplain processes along Bautista Creek is important for these species. This Linkage likely provides for movement of common mammals such as bobcat. As shown on the table below, areas not affected by edge within this Linkage total approximately 10 acres of the total 120 acres of the Linkage. Since this is an existing Constrained Linkage with no new Reserve Assembly anticipated and it is already affected by edge, treatment and management of edge conditions along this Linkage will be necessary to ensure that it provides Habitat and movement functions for species using the Linkage. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

EXISTING CONSTRAINED LINKAGE D
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
120 110 10 271 arroyo toad, mountain yellow-legged frog, western pond turtle, Cooper's hawk, southwestern willow flycatcher, least Bell's vireo, San Bernardino kangaroo rat, and slender-horned spine flower. Community Development, Agriculture Ramona Expressway

Existing Constrained Linkage E

Existing Constrained Linkage E is generally comprised of lands set aside as part of a pre-existing conservation agreement and lower Tucalota Creek. This Linkage provides potential nest sites and foraging Habitat for certain species and connections to Core Areas in French Valley and Johnson Ranch. This Linkage is constrained by existing agricultural practices and roadways, including Borel Road and Pourroy Road. Planning Species for which Habitat is provided within this Linkage include grasshopper sparrow, Bell's sage sparrow, and Munz's onion. Maintenance of habitat quality and floodplain processes along lower Tucalota Creek are important for these species. This Linkage likely provides for movement of common mammals such as bobcat. As shown on the table below, areas not affected by edge within this Linkage total approximately 40 acres of the total 180 acres of the Linkage. Since this is an existing Linkage already affected by edge, treatment and management of edge conditions along this Linkage will be necessary to ensure that it provides Habitat and movement functions for species using this Linkage. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

Butterfield Stage Road forms the eastern boundary of this Linkage and is proposed to be widened. Proposed widening activities may affect movement through this Linkage.

EXISTING CONSTRAINED LINKAGE E
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
180 140 40 169 southern California rufous-crowned sparrow, grasshopper sparrow, Bell's sage sparrow, California horned lark, bobcat, long-spined spine flower, Munz's onion and Palmer's grappling hook. Community Development Borel Road and Butterfield Stage Road

Existing Linkage A

Existing Linkage A consists of a parcel of BLM-owned (Public/Quasi-Public) land located on the southern border of the Plan Area, directly east of I-15. This Linkage is connected to other MSHCP conserved lands via Proposed Constrained Linkage 14 (Pechanga Creek). The Linkage may be used to move from Pechanga Creek south into San Diego County (a journey of approximately 7,350 feet), or to the east, to Rural Mountainous land beyond the Linkage (a journey of approximately 7,740 feet). Existing agriculture or urban Development do not constrain the Linkage, which is surrounded largely by a planned land use designation of Rural Mountainous. This Linkage likely provides for movement of common mammals such as bobcat as well as Live-In Habitat for species listed in the table below. Since this is an existing Linkage with no new Reserve Assembly anticipated, treatment and management of edge conditions along this Linkage will be necessary to ensure that it provides Habitat and movement functions for species using the Linkage. Guidelines Pertaining to Urban/ Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document. Management entities in this existing Linkage include the Bureau of Land Management.

EXISTING LINKAGE A
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
870 170 700 45 Santa Ana sucker, Cooper's hawk, tricolored blackbird, burrowing owl, American bittern, ferruginous hawk, cactus wren, northern harrier, western yellow-billed cuckoo, yellow warbler, white-tailed kite, southwestern willow flycatcher, California horned lark, peregrine falcon, yellow-breasted chat, loggerhead shrike, black-crowned night heron, osprey, double-crested cormorant, downy woodpecker, white-faced ibis, tree swallow, least Bell's vireo, bobcat, and mountain lion. Rural Mountainous, Indian Lands None

Existing Noncontiguous Habitat Block A

Existing Noncontiguous Habitat Block A consists of the Box Springs Mountains, located in the extreme northern region of the Plan Area. Existing Noncontiguous Habitat Block A includes two pieces of land connected to each other by Proposed Constrained Linkage 8. This habitat block is in turn connected to other MSHCP conserved lands via Proposed Constrained Linkage 7 and Proposed Linkage 4 (Reche Canyon). Although this habitat block has a relatively high P/A ratio (44 feet per acre) compared to the existing and proposed Core Areas, it is well connected overall and situated only 1.7 miles from Existing Core D. This habitat block provides Live-In Habitat for species, and it likely contains movement Habitat for common mammals such as bobcat. However, Existing Noncontiguous Habitat Block A is partially constrained by existing urban Development and is surrounded by a city planned land use designation. Potential alignment of the San Bernardino to Moreno Valley corridor may also affect movement and viability of species within the habitat block. As such, treatment and management of edge conditions along this habitat block will be necessary to ensure that it provides Habitat and movement functions for species using the habitat block. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document. Management entities in this existing Noncontiguous Habitat Block include the County of Riverside Park and Open Space District.

EXISTING NONCONTIGUOUS HABITAT BLOCK A
Approximate Dimension Data for Block Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Block
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
2,650 540 2,110 44 1.7 southern California rufous-crowned sparrow, Bell's sage sparrow, cactus wren, loggerhead shrike, Stephens' kangaroo rat, bobcat, and Nevin's barberry. Rural Mountainous, City (Riverside, Moreno Valley), Open Space/ Conservation Pigeon Pass Road, San Bernardino to Moreno Valley CETAP Corridor

Existing Noncontiguous Habitat Block B

Existing Noncontiguous Habitat Block B consists of Bogart County Park, located in the northeastern portion of the Plan Area. This publicly-owned habitat block is connected to other MSHCP conserved lands via Proposed Constrained Linkage 23 (Cherry Valley Linkage). Existing urban Development and a Community Development planned land use designation constrain some margins of the block. Therefore, special care must be taken to maintain high quality Habitat within the Core and along the edges for species sensitive to Edge Effects listed in the table below. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document. Despite potential Edge Effect issues, this habitat block provides Live-In Habitat for a number of species as noted in the table below and possibly movement Habitat for other common mammals such as bobcat.

EXISTING NONCONTIGUOUS HABITAT BLOCK B
Approximate Dimension Data for Block Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Block
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
660 160 500 46 8.8 San Bernardino mountain kingsnake, Bell's sage sparrow, bobcat, and Los Angeles pocket mouse. Rural Mountainous, Community Development None

Existing Noncontiguous Habitat Block C

Existing Noncontiguous Habitat Block C is comprised of BLM land north of the Cahuilla Indian Reservation. This habitat block supports known populations of Quino checkerspot butterfly. Maintenance of habitat quality and connections to other areas supporting populations of Quino checkerspot butterfly is important for this species. As shown in the table below, approximately 550 acres of a total of 660 acres within this habitat block are not affected by edge. Since this is an existing Noncontiguous Habitat Block affected by edge with no new Reserve Assembly anticipated, management of edge conditions along the habitat block will be necessary to ensure that habitat quality is maintained and indirect effects of widening Cary Road (existing facility) and planned land uses are minimized. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

EXISTING NONCONTIGOUS HABITAT BLOCK C
Approximate Dimension Data for Block Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Block
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
660 110 550 33 1 Quino checkerspot butterfly Community Development to the east, and Rural to the south and west Cary Road

Proposed Core 1

Proposed Core 1 is located approximately in the east-central region of the Plan Area. This Core Area consists largely of private lands in the Alberhill area but also contains small pieces of Public/Quasi-Public Lands. The Core exists in two blocks, one east and one west of I-15. Connections are made from the Core to Proposed Linkage 1, Proposed Linkage 2 (Alberhill Creek), Proposed Linkage 3, and Existing Core C (Lake Mathews/Estelle Mountain). The Core provides Habitat for species and also provides for movement of species. Key populations of coastal California gnatcatcher, Munz's onion, many-stemmed dudleya, cactus wren, tricolored blackbird, and yellow warbler are supported in this Core Area. The Core likely provides for movement of common mammals such as bobcat. Since this Core is contiguous with Existing Core C (Lake Mathews/ Estelle Mountain) via an approximately 10,000-foot connection, the functional area of the Core is much greater than 7,470 acres reported in the table below. Because a portion of the Core is surrounded by city (Lake Elsinore) and community Development planned land uses, and since this Core may be affected by the proposed Hemet to Corona/Lake Elsinore CETAP Corridor, management of edge conditions in these areas will be needed to maintain high quality Habitat within the Core. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

PROPOSED CORE 1
Approximate Dimension Data for Core Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Core
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
7,470 1,120 6,350 30 0* coastal California gnatcatcher, cactus wren, tri-colored blackbird, southwestern willow flycatcher, Munz's onion and many-stemmed dudleya. City (Lake Elsinore), Rural Mountainous, Community Development, Open Space/ Conservation I-15, Hemet to Corona/Lake Elsinore CETAP Corridor

Note: * This Core is contiguous with Existing Core C.

Proposed Core 2

Proposed Core 2 (Antelope Valley) is located approximately in the southwest region of the Plan Area. This Core Area consists largely of private lands but also contains small pieces of Public/Quasi-Public Lands. Connections from the Core are made through Proposed Constrained Linkages 15 (Lower Warm Springs Creek), 16, 17 (Paloma Valley), and 18. The Core is constrained in all directions by existing agricultural uses and urban Development. Though the Core has one of the highest P/A ratios of all MSHCP proposed or existing Cores, it is highly connected to other MSHCP conserved lands and is located only 1.1 miles from the nearest connected Core, Existing Core J (Lake Skinner/Diamond Valley Lake). This Core provides important Habitat for the Quino checkerspot, which has key populations in this area. This butterfly is restricted by the distribution and availability of its hosts plants, which in many areas have been replaced by non-native exotic weed species and habitat type conversion. Because of the large number of Covered Activities planned in this area and the constrained condition of the Core, management of edge conditions will be necessary in this area to maintain high quality Habitat for the Qunio checkerspot and other species using this Core. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

PROPOSED CORE 2
Approximate Dimension Data for Core Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Core
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
5,050 910 4,140 35 1.1 Quino checkerspot butterfly, western pond turtle, southern California rufous-crowned sparrow, grasshopper sparrow, Bell's sage sparrow, Swainson's hawk, California horned lark, coastal California gnatcatcher, bobcat, Los Angeles pocket mouse, Munz's onion, San Diego ambrosia, spreading navarretia, and California Orcutt grass. City (Murrieta), Community Development, Rural Menifee Road, Briggs Road, Whitewood Road, Clinton Keith Road, Los Alamos Auld Road

Proposed Core 3

Proposed Core 3 (Badlands/Potrero) is located in the northeast region of the Plan Area. This Core consists mainly of private lands but also contains a few Public/Quasi-Public parcels including De Anza Cycle Park. The Core is connected to Proposed Linkage 12 (north San Timoteo Creek), Proposed Linkage 4 (Reche Canyon), Proposed Constrained Linkage 22 (east San Timoteo Creek), Existing Core H (Lake Perris), Existing Core K (San Jacinto Mountains), Proposed Linkage 11 (Soboba/Gilman Springs), and Proposed Constrained Linkage 21. The Core also functions as a Linkage, connecting the San Bernardino National Forest to the southwest with San Bernardino County and other conserved areas to the north of the Core. With a total acreage of approximately 24,920 acres, Proposed Core 3 is one of the largest MSHCP Core Areas. In addition, the Core is contiguous with Existing Core H (Lake Perris/Mystic Lake) and Existing Core K (San Jacinto Mountains), thus greatly enlarging the functional area of the Core. The Core has both a large proportion of its area unaffected by edge (approximately 23,420 acres of the total 24,940 acres) and is only partially constrained by existing agricultural use. Within the Core, important Live-In and movement Habitat is provided for Bell's sage sparrow, loggerhead shrike, cactus wren, Stephens' kangaroo rat, southern California rufous-crowned sparrow, and mountain lion, which have key populations in the Badlands. Management of edge conditions will be necessary in the Badlands to maintain high quality Habitat for these species in areas which may be affected by covered facilities including Lambs Canyon Road, San Timoteo Canyon Road, and Gilman Springs Road. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

PROPOSED CORE 3
Approximate Dimension Data for Core Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Core
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
24,940 1,520 23,420 13 0* southern California rufous-crowned sparrow, Bell's sage sparrow, cactus wren, loggerhead shrike, San Bernardino kangaroo rat, Stephens' kangaroo rat, bobcat, Los Angeles pocket mouse, mountain lion, Nevin's barberry City (Beaumont, Cherry Valley, Moreno Valley), Open Space/ Conservation, Rural, Rural Mountainous, Community Development SR-60, Lambs Canyon Road, San Timoteo Canyon Road, Gilman Springs Road

Note: * This Core is contiguous with Existing Core H and Existing Core K.

Proposed Core 4

Proposed Core 4 (East Cactus Valley) is located in the east-central region of the Plan Area. This Core is composed of private lands and is generally unconstrained by existing urban Development or agricultural use. Connections are made from the Core via Existing Constrained Linkage D (Bautista Creek), Proposed Linkage 14 (Cactus Valley), and Existing Core K (San Jacinto Mountains). The Core also functions as a Linkage, connecting the Diamond Valley Lake/Lake Skinner and Cactus Valley areas in the west with the San Jacinto Mountains in the east. Proposed Core 4 is contiguous with Existing Core K (San Jacinto Mountains), thus greatly enlarging the functional area of the Core. The Core provides Live-In and movement Habitat for several species, including the Quino checkerspot, which has key populations in this area. As previously mentioned, this butterfly is restricted by the distribution and availability of its host plants, which in many areas have been replaced by non-native exotic weed species and habitat type conversion. However, due to the lack of planned roadway facilities, the large size of the Core (11,890 acres), and surrounding planned land uses largely of Rural Mountainous, these types of Edge Effects are not expected to compromise the integrity of the Core.

PROPOSED CORE 4
Approximate Dimension Data for Core Planning Species Generalized Adjacent Planned
Land Use
Major Covered Activities Potentially Affecting Core
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
11,890 550 11,340 14 0* Quino checkerspot butterfly, arroyo toad, Bell's sage sparrow, cactus wren, loggerhead shrike, Stephens' kangaroo rat, bobcat, Los Angeles pocket mouse, and mountain lion. Rural Mountainous, Open Space/Conservation, Agriculture, Community Development, Rural None

Note: * This Core is contiguous with Existing Core K.

Proposed Core 5

Proposed Core 5 is comprised of the portion of the upper San Jacinto River extending from the San Jacinto Mountains to just west of State Street. It is contiguous with Core Areas in the San Jacinto Mountains and areas downstream along the San Jacinto River. Planning Species for which Habitat is provided within this Core include mountain yellow-legged frog, arroyo toad, least Bell's vireo, southwestern willow flycatcher, San Bernardino kangaroo rat, and Los Angeles pocket mouse. Maintenance of floodplain processes and water quality of the San Jacinto River is important for these species, as well as maintenance of habitat quality. This Core likely provides for movement of mammals such as mountain lion and bobcat, connecting to Core Areas in the San Jacinto Mountains, Lake Perris and San Jacinto Wildlife Refuge. In addition to indirect effects associated with adjacent planned land uses identified in Section 6.0 of this document, flood control activities resulting from adjacent planned land uses may also adversely affect species such as arroyo toad, San Bernardino kangaroo rat, least Bell's vireo, southwestern willow flycatcher and Los Angeles pocket mouse.

PROPOSED CORE 5
Approximate Dimension Data for Core Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Core
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
3,220 700 2,520 58 N/A arroyo toad, mountain yellow-legged frog, Cooper's hawk, yellow warbler, southwestern willow flycatcher, least Bell's vireo, San Bernardino kangaroo rat, bobcat, mountain lion, slender-horned spine flower, and western pond turtle. Indian Lands (Soboba Indian Reservation) Ramona Expressway, SR-74 and Soboba Road

Proposed Core 6

Proposed Core 6 is comprised largely of the Silverado Ranch. It provides Habitat for a number of Planning Species such as Quino checkerspot butterfly, Stephens' kangaroo rat, Los Angeles pocket mouse, mountain lion and bobcat. As shown on the table below, areas not affected by edge within this proposed Core total approximately 4,060 acres of the total 4,290 acres of the Core. Maintenance of large intact interconnected habitat blocks is important for these species.

In addition to indirect effects of adjacent land uses described in Section 6.0 of this document, fire, fire suppression, and sheep and cattle grazing associated with Development adjacent to MSHCP Conservation Areas may adversely affect species listed in the table below. Other activities which may affect biological resources within the proposed Core include widening of existing roadways. The proposed roadway widening noted in the table below may result in habitat fragmentation and increased motor vehicle traffic may adversely affect Quino checkerspot butterfly during their flight season.

PROPOSED CORE 6
Approximate Dimension Data for Core Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Core
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
4,290 230 4,060 22 0* Quino checkerspot butterfly, Bell's sage sparrow, golden eagle nest site, cactus wren, least Bell's vireo, Aguanga kangaroo rat, Stephens' kangaroo rat, bobcat, mountian lion, Los Angeles pocket mouse, Payson's jewelflower. Indian Lands (Cahuilla Indian Reservation), Open Space/ Conservation and Rural Cary Road, Ramsey Road and Tule Peak Road

Note: * This Core is contiguous with Existing Core L.

Proposed Core 7

Proposed Core 7 is comprised of a mosaic of upland and wetland habitat types in the Vail Lake, Sage and Wilson Valley areas. The proposed large intact habitat blocks provide Live-In Habitat for a number of Planning Species and movement for species connecting to other Core Areas located in the Agua Tibia Wilderness, San Bernardino National Forest and Beauty Mountain Management Area. This Core supports Quino checkerspot butterfly, coastal California gnatcatcher, Stephens' kangaroo rat, least Bell's vireo, bobcat, mountain lion and several Narrow Endemic Plant Species occurring on Travers-Willow-Domino soil series. Maintenance of large intact interconnected habitat blocks and wetland functions and values of Vail Lake and portions of Tucalota Creek, Temecula Creek, Tule Creek, Cottonwood Creek, Arroyo Seco Creek, Kolb Creek and Wilson Creek is important for these species. As shown on the table below, areas not affected by edge within this Core total approximately 48,510 acres of the total 50,000 acres occupied by this Core. For portions of Core Areas adjacent to Development, treatment and management of edge conditions will be necessary to ensure habitat quality for species using the Core. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

PROPOSED CORE 7
Approximate Dimension Data for Core Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Core
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
50,000 1,490 48,510 7 0* arroyo toad, California red-legged frog, Quino checkerspot butterfly, Cooper's hawk, tricolored blackbird, southern California rufous-crowned sparrow, Bell's sage sparrow, cactus wren, northern harrier, yellow warbler, white-tailed kite, loggerhead shrike, coastal California gnatcatcher, tree swallow, least Bell's vireo, Aguanga kangaroo rat, Stephens' kangaroo rat, bobcat, Los Angeles pocket mouse, mountain lion, Payson's jewelflower, and Parry's spine flower. Rural, Rural Mountainous, Agriculture and Community Development SR-79, SR-371, and Pauba Road

Note: * This Core is contiguous with Existing Core K, Existing Core L, and Existing Core M.

The major Covered Activities, SR-79, SR-371, and Pauba Road, are existing roadways that are planned to be widened. Proposed widening activities may directly affect Habitat, floodplain processes along Temecula Creek important to the species noted above and in the table below, or may affect movement through this Core.

Proposed Noncontiguous Habitat Block 1

Proposed Noncontiguous Habitat Block 1 consists of two habitat blocks containing soils suitable for supporting the Delhi Sands flower-loving fly. This habitat block is constrained by existing adjacent agricultural activities. Maintenance of Delhi sands soil series is important for this species. As shown in the table below, areas not affected by edge within this habitat block total approximately 190 acres of the total 290 acres occupied by this proposed Noncontiguous Habitat Block. Because this species is adversely affected by agricultural activities such as grazing and discing, treatment and management of edge conditions will be necessary to maintain intact habitat blocks of Delhi sands. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

PROPOSED NONCONTIGUOUS HABITAT BLOCK 1
Approximate Dimension Data for Block Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Block
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
290 100 190 89 N/A Delhi Sands flower-loving fly and Los Angeles pocket mouse. Community Development SR-60

Proposed Noncontiguous Habitat Block 2

Proposed Noncontiguous Habitat Block 2 is comprised of the Jurupa Mountains. This Noncontiguous Habitat Block provides Habitat for Planning Species such as Delhi Sands flower-loving fly, loggerhead shrike, San Bernardino kangaroo rat and coastal California gnatcatcher. It may also provide a "stepping stone" for birds connecting to areas in San Bernardino County. Maintenance of large intact interconnected habitat blocks is important for these species. As shown in the table below, areas not affected by edge total approximately 1,070 acres of the total 1,230 acres occupied by this habitat block. Since this habitat block may be affected by edge, treatment and management of edge conditions will be necessary to ensure that it provides Habitat and movement functions for species using this habitat block. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

PROPOSED NONCONTIGUOUS HABITAT BLOCK 2
Approximate Dimension Data for Block Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Block
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
1,230 160 1,070 38 N/A Delhi Sands flower-loving fly, southern California rufous-crowned sparrow, Bell's sage sparrow, loggerhead shrike, coastal California gnatcatcher, San Bernardino kangaroo rat, bobcat, and Los Angeles pocket mouse. Community Development and Open Space/ Conservation None

Proposed Noncontiguous Habitat Block 3

Proposed Noncontiguous Habitat Block 3 consists of a habitat block containing soils suitable for supporting the Delhi Sands flower-loving fly. This habitat block is constrained by existing adjacent agricultural activities. Maintenance of Delhi Sands soil series is important for this species. As shown in the table below, areas not affected by edge within this habitat block total approximately 120 acres of the total 185 acres occupied by this proposed Noncontiguous Habitat Block. Because this species is adversely affected by agricultural activities such as grazing and discing, and by exotic invasive species, treatment and management of edge conditions will be necessary to maintain intact habitat blocks of Delhi Sands as adjacent planned community Development is developed along the edge of the habitat block. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

PROPOSED NONCONTIGUOUS HABITAT BLOCK 3
Approximate Dimension Data for Block Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Block
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
185 65 120 114 N/A Delhi Sands flower-loving fly, Los Angeles pocket mouse Community Development None

Proposed Noncontiguous Habitat Block 4

Proposed Noncontiguous Habitat Block 4 is comprised of the Motte Rimrock Reserve. It provides Habitat for a number of Planning Species, including Quino checkerspot butterfly, coastal California gnatcatcher, and Stephens' kangaroo rat. Maintenance of large intact interconnected habitat blocks is important for these species. As shown in the table below, areas not affected by edge total approximately 920 acres of the total 1,150 acres occupied by this habitat block. Since this habitat block may be affected by edge, treatment and management of edge conditions will be necessary to ensure that it provides Habitat and movement functions for species using this habitat block as planned adjacent land uses are developed along the edge. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document. Activities associated with proposed adjacent land uses such as fire, fire suppression, off-road vehicle use and landscaping with exotic invasive species may be harmful to Stephens' kangaroo rat.

PROPOSED NONCONTIGUOUS HABITAT BLOCK 4
Approximate Dimension Data for Block Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Block
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
1,150 230 920 36 N/A Bell's sage sparrow, cactus wren, coastal California gnatcatcher, Stephens' kangaroo rat, and long-spined spine flower. Community Development and Rural None

Proposed Noncontiguous Habitat Block 5

Proposed Noncontiguous Habitat Block 5 consists of the Lakeview Mountains, located approximately in the center of the Plan Area. This habitat block is connected to other MSHCP conserved lands via Proposed Constrained Linkage 20. The Lakeview Mountains are located 1.2 miles from the nearest connected Core (Existing Core H, Lake Perris/Mystic Lake). Private lands comprise the vast majority of lands in the habitat block, but a few small parcels of Public/ Quasi-Public Lands are also present. The Lakeview Mountains represent a large block of Habitat, which has a low P/A ratio and contains only 900 of the total approximately 7,150 acres as edge area. As such, this Noncontiguous Habitat Block supports the species listed in the table below, including a key population of Bell's sage sparrow. Since surrounding land uses include a substantial amount of city and agriculture, and one alternative for the Highway 79 Realignment Corridor would impact the habitat block, treatment and management of edge conditions in these affected areas will be necessary to ensure that it maintains high quality sage scrub Habitat, particularly for the Bell's sage sparrow. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

PROPOSED NONCONTIGUOUS HABITAT BLOCK 5
Approximate Dimension Data for Block Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Block
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
7,150 900 6,250 23 1.2 Bell's sage sparrow, burrowing owl, bobcat and Los Angeles pocket mouse. City (San Jacinto), Rural, Rural Mountainous, Agriculture, Community Development Bridge Street, Hemet to Corona/Lake Elsinore CETAP Corridor

Proposed Noncontiguous Habitat Block 6

Proposed Noncontiguous Habitat Block 6 consists of three vernal pools west of Hemet/San Jacinto, and east of the Lakeview Mountains. Though small in size, these parcels preserve important populations of Narrow Endemic Plant Species, including Davidson's saltscale, thread-leaved brodiaea, little mousetail, California Orcutt grass and spreading navarretia, as well as vernal pool fairy shrimp. Maintenance of vernal pool hydrology, water quality and Traver-Willow- Domino soil series is important for these species. Proposed Noncontiguous Habitat Block 6 is constrained by existing urban development and agricultural use. As shown in the table below, approximately 220 acres of the total 330 acres occupied by the vernal pools are not affected by edge. Adjacent urban Development in the City of San Jacinto, and realignment of the SR-79 North Corridor may affect resources within this habitat block. Treatment and management of edge conditions will be necessary to ensure that habitat quality and vernal pool hydrology are maintained as planned land uses are developed and major Covered Activities are implemented along the edge of this habitat block. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

PROPOSED NONCONTIGUOUS HABITAT BLOCK 6
Approximate Dimension Data for Block Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Block
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
330 110 220 62 N/A vernal pool fairy shrimp, burrowing owl, mountain plover, loggerhead shrike, Davidson's saltscale, thread-leaved brodiaea, vernal barley, little mousetail, spreading navarretia, and California Orcutt grass. City (San Jacinto) Highway 79 Realignment Corridor

Proposed Noncontiguous Habitat Block 7

Proposed Noncontiguous Habitat Block 7 is comprised of a complex of vernal pools west of the City of Hemet. Though small in size and connected to other MSHCP lands solely via Existing Constrained Linkage B (Salt Creek), these parcels preserve important populations of Narrow Endemic Plant Species, including Davidson's saltscale, thread-leaved brodiaea, little mousetail, California Orcutt grass and spreading navarretia, as well as vernal pool fairy shrimp. Maintenance of vernal pool hydrology, water quality associated with Salt Creek and Traver-Willow-Domino soil series is important for these species. Proposed Noncontiguous Habitat Block 7 is constrained by existing urban Development and agricultural use. As shown in the table below, approximately 1,030 acres of the total 1,260 acres occupied by this habitat block are not affected by edge. Adjacent planned community Development, rural, urban Development in the City of Hemet, and expansion of existing facilities such as SR-74 and SR-79 may affect resources within this habitat block. Treatment and management of edge conditions will be necessary to ensure that habitat quality and vernal pool hydrology are maintained as planned land uses are developed along the edge of this habitat block. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

PROPOSED NONCONTIGUOUS HABITAT BLOCK 7
Approximate Dimension Data for Block Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Block
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
Approx.
Distance to
Nearest
Connected
Core (miles)
1,260 230 1,030 35 N/A vernal pool fairy shrimp, burrowing owl, mountain plover, loggerhead shrike, Munz's onion, spreading navarretia, and California Orcutt grass. City (Hemet), Rural, Rural Mountainous, Agriculture Highway 79 Realignment Corridor

Proposed Constrained Linkage 1

Proposed Constrained Linkage 1 is located in the northwest portion of the Plan Area. The Linkage connects Existing Core A (Prado Basin/Santa Ana River) with Existing Core B (Cleveland National Forest) to the south. Existing urban Development constrains the Linkage at its northern terminus; the Linkage is unconstrained in the south. In addition, SR91 intersects this Linkage at its northern border. Despite this, Proposed Constrained Linkage 1 likely provides for movement of mountain lion and bobcat from the Santa Ana Mountains to the Chino Hills area beyond the Plan Area. Maintenance of contiguous habitat blocks with appropriate refugia for resting, such as rockpiles, brushpiles, windfalls, hollow snags and hollow trees, is important for dispersal of juveniles in this proposed Linkage.

In addition, the Linkage has a relatively low P/A ratio (79 feet per acre) compared to other MSHCP Constrained Linkages, and the Linkage is surrounded by a Rural Mountainous planned land use designation. Thus Edge Effects will be somewhat mitigated by these factors. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document. In addition, as SR-91 intersects the Linkage at its northern terminus, an adequate wildlife underpass or overpass may need to be implemented to insure movement of species in this area and to reduce the chance of mortality from vehicle collision.

PROPOSED CONSTRAINED LINKAGE 1
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
300 110 190 79 Cooper's hawk, coastal California gnatcatcher, bobcat, and mountain lion. Rural Mountainous, Community Development, City (Corona) SR-91

Proposed Constrained Linkage 2

Proposed Constrained Linkage 2 consists of Fresno Canyon, located along the eastern border of the Plan Area. Like Proposed Constrained Linkage 1, this Linkage connects Existing Core A (Prado Basin and Santa Ana River) with Existing Core B (Cleveland National Forest) to the south. Unlike Constrained Linkage 1, however, the Fresno Canyon Constrained Linkage provides a riparian connection from the Prado Basin and Santa Ana River to the Cleveland National Forest, thus allowing for movement of species such as coast range newt and western pond turtle. This Linkage is also likely to be important for mountain lion movement from the Santa Ana Mountains to the Chino Hills beyond the Plan Area. Maintenance of contiguous habitat blocks with appropriate refugia for resting, such as rockpiles, brushpiles, windfalls, hollow snags and hollow trees, is important for dispersal of juveniles in this proposed Linkage.

Existing agricultural use and a small amount of urban Development constrain the Linkage along much of its length, and the vast majority of the Linkage is surrounded by a city (Corona) planned land use designation; thus treatment and management of edge conditions along this Linkage will be necessary to ensure that it provides Habitat and movement functions for species using the Linkage. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document. In addition, as SR-91 intersects the Linkage at its northern terminus, an adequate wildlife underpass or overpass may need to be implemented to insure movement of species in this area and to reduce the chance of mortality from vehicle collision.

PROPOSED CONSTRAINED LINKAGE 2
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
200 110 90 106 coast range newt, western pond turtle, bobcat, and mountain lion City (Corona), Open Space/ Conservation SR-91

Proposed Constrained Linkage 3

Proposed Constrained Linkage 3 is comprised of upland Habitat located in the vicinity of Indian Truck Trail. It provides movement of species between Core Areas along Temescal Wash and Lake Mathews/Estelle Mountain area to the Santa Ana Mountains in the Cleveland National Forest via an undercrossing of I-15. Although this Linkage is constrained by planned community Development. Planning Species such as bobcat may use this Linkage and maintenance of contiguous Habitat with appropriate refugia for resting, such as rockpiles, brushpiles, windfalls, hollow snags and hollow trees, is important for dispersal of juveniles. As shown below, areas not affected by edge within this Linkage total approximately 20 acres of the total 80 acres of the Linkage. Since this Linkage is affected by edge, it is anticipated that treatment and management of edge conditions along this Linkage will be necessary to ensure that it provides linkage area for species, such as bobcat moving through this area. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

Habitat fragmentation or construction of barriers as a result of planned community Development may affect large mammal movement through this Constrained Linkage. Proposed widening of I-15 may also affect movement through this Constrained Linkage. Maintenance of an adequate wildlife undercrossing at least 10-20 feet wide with fencing and vegetative cover will be important to accommodate movement of bobcats.

PROPOSED CONSTRAINED LINKAGE 3
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
80 60 20 201 bobcat Community Development I-15

Proposed Constrained Linkage 4

Proposed Constrained Linkage 4 is comprised of the portion of Temescal Wash extending from Indiana Avenue to El Cerrito Road. This Linkage provides Habitat for wetland species, Narrow Endemic Plant Species, and movement for species connecting to Core Areas in Lake Mathews/Estelle Mountain and areas upstream along Temescal Wash. The northern extent of this Linkage is constrained by existing Development in the City of Corona. Planning Species for which Habitat is provided within this Linkage include Parry's spine flower, peninsular spine flower, smooth tarplant, least Bell's vireo and southwestern willow flycatcher. Maintenance of habitat quality and floodplain processes along Temescal Wash are important for these species. As shown below, areas not affected by edge within this Linkage total approximately 160 acres of the total 380 acres of the Linkage. Since this Linkage is affected by edge, it is anticipated that treatment and management of edge conditions along the portion of this Linkage adjacent to urban Development in the City of Corona will be necessary to ensure that it provides Habitat and movement functions for species using the Linkage. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

PROPOSED CONSTRAINED LINKAGE 4
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge
(ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
380 220 160 106 yellow warbler, yellow-breasted chat, downy woodpecker, least Bell's vireo, Munz's onion, long-spined spine flower, and many stemmed dudleya City (Corona), Open Space/ Conservation and Rural Mountainous None

Proposed Constrained Linkage 5

Proposed Constrained Linkage 5 is a wildlife undercrossing located in the vicinity of I-15 and Horsethief Canyon Road. It provides a connection to Core Areas along Temescal Wash and in the Lake Mathews/Estelle Mountain area to ultimately the Santa Ana Mountains in the Cleveland National Forest. It augments a proposed Linkage north of Alberhill. It is constrained by planned community Development to the east and to the north along I-15. Maintenance of contiguous Habitat is important for these species. This Linkage likely provides for movement for mammals such as mountain lion and bobcat. Maintenance of contiguous Habitat with appropriate refugia for resting, such as rockpiles, brushpiles, windfalls, hollow snags and hollow trees, is important for dispersal of juveniles.

As shown below, areas not affected by edge within this Linkage total approximately 15 of the 25 acres of the Linkage. Since this Linkage is affected by edge, it is anticipated that treatment and management of edge conditions along this Linkage will be necessary to ensure that it provides Habitat and movement functions for species using the Linkage. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document. Adjacent planned community Development and widening of I-15 may affect movement of species through this Constrained Linkage. Maintenance of an adequate wildlife undercrossing at least 10-20 feet wide with fencing and vegetative cover will be important to accommodate movement of bobcat and mountain lion.

PROPOSED CONSTRAINED LINKAGE 5
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
25 10 15 188 bobcat, mountain lion Community Development I-15

Proposed Constrained Linkage 6

Proposed Constrained Linkage 6 is located approximately in the east-central region of the Plan Area and consists of a portion of Temescal Wash. This Linkage connects Proposed Core 1 (Alberhill), Proposed Extension of Existing Core 2 (Lake Mathews/Estelle Mountain Extension), and Proposed Linkage 1. Private lands comprise the entirety of the Linkage, which provides important upland and riparian Habitat for species such as those listed in the table below. High quality riparian Habitat must be maintained within the Core and along the edges for species such as Cooper's hawk, yellow warbler, white-tailed kite, yellow-breasted chat and least Bell's vireo, which have key populations located in or along the wash. Since existing agricultural use completely constrains this Linkage, and the Linkage is partially surrounded by community Development planned land use, treatment and management of edge conditions along this Linkage will be necessary to ensure that it provides Habitat and movement functions for species using the Linkage. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

PROPOSED CONSTRAINED LINKAGE 6
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
175 110 65 130 Cooper's hawk, yellow warbler, white-tailed kite, southwestern willow flycatcher, yellow-breasted chat and least Bell's vireo Urban Development, Agriculture I-15

Proposed Constrained Linkage 7

Proposed Constrained Linkage 7 is comprised of upland Habitat in the vicinity of Central Avenue. It is the only connection from Sycamore Canyon Park to Box Springs Reserve. This Linkage is important for species dispersal and would reduce the likelihood of species extinction as a result of population isolation. Habitat for Planning Species such as cactus wren and Bell's sage sparrow occurs within this Linkage. This Linkage likely provides for movement of common mammals such as bobcat. Maintenance of contiguous Habitat with appropriate refugia for resting, such as rockpiles, brushpiles, windfalls, hollow snags and hollow trees, is important for dispersal of juveniles.

As shown in the table below, areas not affected by edge within this Linkage total approximately 65 acres of the total 175 acres of the Linkage. Since this Linkage is affected by edge, it is anticipated that treatment and management of edge conditions along this Linkage will be necessary to ensure that it provides Habitat and movement functions for species using the Linkage. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document. The Linkage is constrained by existing urban Development and roadways. Adjacent planned community Development, urbanized areas of the City of Riverside and proposed widening activity of I-215 may affect bobcat movement through this Constrained Linkage. Maintenance of an adequate wildlife undercrossing at least 10-20 feet wide with fencing and vegetative cover will be important to accommodate bobcat movement.



PROPOSED CONSTRAINED LINKAGE 7
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
175 110 65 118 Bell's sage sparrow, cactus wren, and bobcat City (Riverside) and Community Development I-215

Proposed Constrained Linkage 8

Proposed Constrained Linkage 8 is comprised of upland Habitat in the Pigeon Pass Valley and connects to two existing Noncontiguous Habitat Blocks in the Box Springs Mountain area. Planning species such as cactus wren and bobcat may occur. This Linkage likely provides for movement of common mammals such as bobcat. Maintenance of contiguous Habitat with appropriate refugia for resting, such as rockpiles, brushpiles, windfalls, hollow snags and hollow trees, is important for dispersal of juveniles.

PROPOSED CONSTRAINED LINKAGE 8
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge
(ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
270 50 220 69 southern California rufous-crowned sparrow, Bell's sage sparrow, cactus wren, loggerhead shrike, and bobcat Rural Mountainous and Open Space/ Conservation None

As shown on the table above, areas not affected by edge within this Linkage total approximately 220 acres of the total 270 acres of the Linkage. This Linkage is constrained by planned Rural Mountainous Development to the north. Since this Linkage is affected by edge, it is anticipated that treatment and management of edge conditions along this Linkage will be necessary to ensure that it provides Habitat and movement functions for species using the Linkage. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

Proposed Constrained Linkage 9

Proposed Constrained Linkage 9 is one of four Constrained Linkages connecting the Santa Rosa Plateau and Tenaja Corridor to San Diego County. It provides an upland connection to the Cleveland National Forest and areas in San Diego County via the Tenaja Corridor for large mammals. This connection may serve as one component of a larger movement corridor for mountain lions traveling between the Santa Ana Mountains and the Palomar Mountains. A Linkage between these two mountain ranges would reduce the risk of extirpation of the Santa Ana Mountains population of mountain lion, which was considered to be "demographically unstable" without a movement connection (Beier 1993). Maintenance of contiguous Habitat with appropriate refugia for resting, such as rockpiles, brushpiles, windfalls, hollow snags and hollow trees, is important for dispersal of juveniles. This Linkage also may serve as foraging Habitat for raptors and other wildlife species noted in the table below.

PROPOSED LINKAGE 9
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
55 50 5 363 Belding's orange-throated whiptail, southern California rufous-crowned sparrow, Bell's sage sparrow, cactus wren, andmountain lion. Rural Mountainous None

As shown in the table above, approximately 5 acres of a total 55 acres within this Constrained Linkage is not affected by edge. Since this Constrained Linkage is affected by edge, it is anticipated that management of edge conditions will be necessary to ensure that this Linkage maintains movement of large mammals. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document. This Linkage is constrained by surrounding planned Rural Mountainous land uses. Any barriers, including roadways and fencing, associated with adjacent planned Rural Mountainous land uses may result in fragmentation of this Constrained Linkage and affect wildlife movement.

Proposed Constrained Linkage 10

Proposed Constrained Linkage 10 is one of four Constrained Linkages connecting the Santa Rosa Plateau and Tenaja Corridor to San Diego County. It provides an upland connection to the Cleveland National Forest and areas in San Diego County via the Tenaja Corridor for large mammals. This connection may serve as one component of a larger movement corridor for mountain lions traveling between the Santa Ana Mountains and the Palomar Mountains. A Linkage between these two mountain ranges would reduce the risk of extirpation of the Santa Ana Mountains population of mountain lion, which was considered to be "demographically unstable" without a movement connection (Beier 1993). Maintenance of contiguous Habitat with appropriate refugia for resting, such as rockpiles, brushpiles, windfalls, hollow snags and hollow trees, is important for dispersal of juveniles. This Linkage also may serve as foraging Habitat for raptors and other wildlife species noted in the table below.

As shown in the table below, approximately 100 acres of a total 105 acres within this Constrained Linkage is affected by edge. Upon Reserve Assembly of this proposed Constrained Linkage, management of edge conditions will be necessary to ensure that this Linkage maintains movement of large mammals. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document. It is constrained by surrounding planned Rural Mountainous land use. Any barriers, including roadways and fencing, associated with adjacent planned Rural Mountainous land uses may result in fragmentation of this Constrained Linkage and affect wildlife movement.



PROPOSED CONSTRAINED LINKAGE 10
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
105 100 5 244 southern California rufous-crowned sparrow, Bell's sage sparrow, turkey vulture, loggerhead shrike, bobcat, mountain lion. Rural Mountainous None

Proposed Constrained Linkage 11

Proposed Constrained Linkage 11 consists of De Luz Canyon, located along the southwestern border of the Plan Area. The Linkage is composed of a west fork and an east fork, which connect San Diego County in the south to Proposed Linkage 9 (Tenaja Corridor) and Existing Core F (Santa Rosa Plateau Nature Reserve), respectively. The west route, from Proposed Linkage 9 to San Diego County, is approximately 15,850 feet (3.0 miles) in length, while the east route, from Existing Core F to San Diego County, is approximately 18,980 feet (3.6 miles) in length. This Constrained Linkage contains a very high proportion of its area (approximately 250 of the total 260 acres) defined as "edge" area and has one of the highest P/A ratios of all Constrained Linkages. Furthermore, the Linkage is constrained for the majority of its length by existing agricultural use. For these reasons care must be taken to maintain high quality Habitat along the edges for species sensitive to Edge Effects listed in the table below. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1.4 of this document.

Despite potential Edge Effect issues, this Linkage provides Live-In Habitat for a number of species as noted in the table below and possibly movement Habitat for mammals such as bobcat and mountain lion. This connection may serve as one component of a larger movement corridor for mountain lions traveling between the Santa Ana Mountains and the Palomar Mountains. A Linkage between these two mountain ranges would reduce the risk of extirpation of the Santa Ana Mountains population of mountain lion, which was considered to be "demographically unstable" without a movement connection (Beier 1993). Maintenance of contiguous Habitat with appropriate refugia for resting, such as rockpiles, brushpiles, windfalls, hollow snags and hollow trees, is important for dispersal of juveniles.

PROPOSED CONSTRAINED LINKAGE 11
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge
(ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
260 250 10 257 southern California rufous-crowned sparrow, Bell's sage sparrow, bobcat, and mountain lion Rural Mountainous None

Proposed Constrained Linkage 12

Proposed Constrained Linkage 12 (Sandia Canyon) is located along the southwestern border of the Plan Area, just east of Proposed Constrained Linkage 11 (De Luz Canyon). Like Proposed Constrained Linkage 11, Proposed Constrained Linkage 12 is composed of a west fork and an east fork. Only the west fork, however, is connected to other MSHCP lands (Existing Core F, Santa Rosa Plateau Nature Reserve). The Linkage provides important Live-In Habitat for many species as noted in the table below and also likely provides an upland connection to the Cleveland National Forest and areas in San Diego County via the Tenaja Corridor for large mammals. This connection may serve as one component of a larger movement corridor for mountain lions traveling between the Santa Ana Mountains and the Palomar Mountains. A Linkage between these two mountain ranges would reduce the risk of extirpation of the Santa Ana Mountains population of mountain lion, which was considered to be "demographically unstable" without a movement connection (Beier 1993). Maintenance of contiguous Habitat with appropriate refugia for resting, such as rockpiles, brushpiles, windfalls, hollow snags and hollow trees, is important for dispersal of juveniles.

Although existing agricultural use constrains the Linkage and the Linkage's P/A ratio is somewhat large (196 feet per acre), the Linkage contains 170 acres of interior area, and surrounding planned land uses consist almost entirely of Rural Mountainous. Treatment and management of edge conditions along this Linkage will be necessary to ensure that it provides Habitat and movement functions for species using the Linkage. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

PROPOSED CONSTRAINED LINKAGE 12
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge
(ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
730 560 170 196 southern California rufous-crowned sparrow, grasshopper sparrow, Bell's sage sparrow, bobcat, mountain lion Rural Mountainous, Community Development, Open Space/ Conservation None

Proposed Constrained Linkage 13

Proposed Constrained Linkage 13 consists of Murrieta Creek, located in the southwestern region of the Plan Area. This Constrained Linkage connects Existing Core F (Santa Rosa Plateau Ecological Reserve) in the north to Proposed Linkage 10 in the south. This Linkage is constrained along most of its length by existing urban Development and agricultural use and the planned land use surrounding the Linkage consists of city (Murrieta and Temecula). Therefore, care must be taken to maintain high quality riparian Habitat within the Linkage and along the edges for species such as yellow warbler, yellow-breasted chat, and least Bell's vireo, which have key populations located in or along the creek. Maintenance of existing floodplain processes and water quality along the creek is also important to western pond turtle and arroyo chub in this area. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1.4 of this document.

PROPOSED CONSTRAINED LINKAGE 13
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
1,400 700 700 105 Cooper's hawk, yellow warbler, southwestern willow flycatcher, tree swallow, least Bell's vireo, and western pond turtle City (Murrieta, Temecula) None

Proposed Constrained Linkage 14

Proposed Constrained Linkage 14 consists of portions of Pechanga and Temecula Creeks, located in the southwestern region of the Plan Area. This Constrained Linkage connects Existing Core G (Santa Margarita Ecological Reserve) and Proposed Linkage 10 in the west to Existing Linkage A in the south. This Linkage bifurcates and may be used to move directly to the east, along Temecula Creek, or to the southeast, along Pechanga Creek to Existing Linkage A. This Linkage is constrained along most of its length by existing urban Development and the planned land uses surrounding the Linkage consist almost entirely of city (Temecula). I-15 also intersects the Linkage at its western terminus. Therefore, high quality Live-In riparian Habitat must be maintained, and movement Habitat for bobcat and mountain lion must be provided, as these species are known to use the Linkage for movement. This portion of Pechanga and Temecula Creek may serve as one component of a larger movement corridor for mountain lions traveling between the Santa Ana Mountains and the Palomar Mountains. A Linkage between these two mountain ranges would reduce the risk of extirpation of the Santa Ana Mountains population of mountain lion, which was considered to be "demographically unstable" without a movement connection (Beier 1993). Maintenance of contiguous Habitat with appropriate refugia for resting, such as rockpiles, brushpiles, windfalls, hollow snags and hollow trees, is important for dispersal of juveniles. Maintenance of existing floodplain processes and water quality along the creek is also important for wetland species noted in the table below.

PROPOSED CONSTRAINED LINKAGE 14
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
500 230 270 85 California red-legged frog, arroyo chub, mountain lion, western pond turtle City (Temecula) None

Proposed Constrained Linkage 15

Proposed Constrained Linkage 15 is located in the southwestern region of the Plan Area. This Constrained Linkage consists of a portion of Lower Warm Springs Creek, from just east of the I-15 freeway to Proposed Core 2 (Antelope Valley). The Linkage provides Live-In Habitat for species such as western pond turtle and Los Angeles pocket mouse and also provides important linkage area for bobcat. This Linkage contains one of the highest P/A ratios of all MSHCP Constrained Linkages (160 feet per acre), and contains a relatively small proportion of its area as interior area (approximately 30 acres of the total 180 acres). In addition, existing urban Development constrains much of the Linkage, and planned land uses surrounding the Linkage include city (Murrieta) and community Development. For these reasons, special care must be taken to maintain high quality Habitat within the Linkage and along the edges for species sensitive to Edge Effects. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

PROPOSED CONSTRAINED LINKAGE 15
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge
(ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
180 150 30 160 western pond turtle, bobcat and Los Angeles pocket mouse City (Temecula), Rural Mountainous I-15

Proposed Constrained Linkage 16

Proposed Constrained Linkage 16 is located approximately in the south-central region of the Plan Area. This Constrained Linkage consists of an unnamed blueline drainage connecting Proposed Linkage 8 in the west with Proposed Core 2 (Antelope Valley) in the east. The Linkage provides Habitat for species and also provides for movement of species. The Linkage likely provides for movement of common mammals such as bobcat. Existing urban Development and agricultural use constrain the Linkage along its entire length, and the Linkage is completely surrounded by a city-designated planned land use. Species movement through the Linkage may also be affected by the intersection of the Linkage with I-215. Therefore, treatment and management of edge conditions along this Linkage will be necessary to ensure that it provides Habitat and movement functions for species using the Linkage. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

PROPOSED CONSTRAINED LINKAGE 16
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
80 35 45 98 Quino checkerspot butterfly, coastal California gnatcatcher, bobcat City (Murrieta) I-15

Proposed Constrained Linkage 17

Proposed Constrained Linkage 17 (Paloma Valley) is located in the south-central region of the Plan Area. Proposed Extension of Existing Core 7 (Lake Skinner/Diamond Valley Lake Extension) is located to the east of this Linkage. The Linkage provides Habitat for species and also provides for movement of species. Although this Linkage is constrained by existing urban Development and agricultural use along much of its length, planned land uses surrounding the Constrained Linkage are nearly entirely rural. In addition, the Constrained Linkage has a comparatively low P/A ratio. Thus, Edge Effects on this Constrained Linkage may be substantially lower than for other Constrained Linkages. Nonetheless, treatment and management of edge conditions along this Linkage will be necessary to ensure that it provides Habitat and movement functions for species using the Linkage, since several major Covered Activities are proposed for extension or widening within or adjacent to the Linkage. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document. An adequate wildlife underpass or overpass may need to be implemented to insure movement of species in this area and to reduce the chance of mortality from vehicle collision.

PROPOSED CONSTRAINED LINKAGE 17
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge
(ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
950 240 710 49 Quino checkerspot butterfly, coastal California gnatcatcher, bobcat Rural, Community Development Washington Street, Leon Road, SR-79

Proposed Constrained Linkage 18

Proposed Constrained Linkage 18 consists of an unnamed drainage located in the south-central region of the Plan Area. This Constrained Linkage connects Proposed Core 2 (Antelope Valley) to the west with Proposed Extension of Existing Core 7 (Lake Skinner/Diamond Valley Lake Extension). Existing agricultural use constrains the Linkage, and planned land uses surrounding the Linkage are limited nearly entirely to community Development. The Linkage also has a relatively high proportion of land affected by edge (approximately 250 acres of the total 310 acres) and will also be subject to Edge Effects also due to the widening or extension of several facilities including Washington Street, Briggs Road, and SR-79. Despite these issues, the Linkage nonetheless provides Live-In and movement Habitat for species. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document. This Linkage likely provides for movement of common mammals such as bobcat. An adequate wildlife underpass or overpass may need to be implemented to insure movement of species in this area and to reduce the chance of mortality from vehicle collision.

PROPOSED CONSTRAINED LINKAGE 18
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge
(ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
310 250 60 146 bobcat, Los Angeles pocket mouse Community Development Washington Street, Briggs Road, SR-79

Proposed Constrained Linkage 19

Proposed Constrained Linkage 19 (Lower San Jacinto River) is located approximately in the center of the Plan Area. This Constrained Linkage connects Proposed Linkage 7 in the southwest with Proposed Extension of Existing Core 4 (San Jacinto River Core) in the northeast. Existing agricultural use and a small amount of existing urban Development constrain the Linkage along much of its length. Surrounding planned land uses include only city (Perris). Although the river will be channelized for flood control in this area, the Linkage will nonetheless maintain connectivity along the river and provide for movement of common mammals such as bobcat. An adequate wildlife underpass or overpass may need to be implemented to insure movement of species in this area and to reduce the chance of mortality from vehicle collision. Treatment and management of edge conditions along this Linkage will be necessary to ensure that it provides Habitat and movement functions for species using the Linkage and that wetland functions and values are maintained for the benefit of Narrow Endemic Plant Species known to occur in the San Jacinto River. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

PROPOSED CONSTRAINED LINKAGE 19
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
510 250 260 92 mountain plover, loggerhead shrike, white-faced ibis, bobcat, Los Angeles pocket mouse, San Jacinto Valley crownscale, Davidson's saltscale, thread-leaved brodiaea, vernal barley, Coulter's goldfields, spreading navarretia, and Wright's trichocoronis. City (Perris) Ethanac Road,
I-215

Proposed Constrained Linkage 20

Proposed Constrained Linkage 20 is located approximately in the north-central region of the Plan Area. This Linkage connects Existing Core H (Lake Perris) in the north with Proposed Noncontiguous Habitat Block 5 (Lakeview Mountains) in the south. Maintenance of this connection is important to reduce the likelihood of species extirpation as a result of population isolation for species occurring in the Lakeview Mountains. Existing agricultural use completely constrains this Linkage, and the proposed General Plan land use designation surrounding the Linkage is entirely agriculture. The extension/widening of Bridge Street and the proposed alignment of the Hemet to Corona/Lake Elsinore CETAP Corridor may also compromise the integrity of Proposed Constrained Linkage 20 by adding to Edge Effects contributed by surrounding land use practices. Counteracting these potentially strong Edge Effects, however, are the dimensions of this Linkage. The Linkage has one of the lowest P/A ratios (60 feet per acre) of all MSHCP Cores and Linkages and a high proportion of its area represented as interior (approximately 270 of the total 360 acres). Thus the Linkage can be expected to provide Live-In and movement Habitat for the species listed in the table below. Nevertheless, treatment and management of edge conditions along this Linkage will be necessary to ensure that it provides Habitat and movement functions for species using the Linkage. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document. Maintenance of wetland functions and values is important for Narrow Endemic Plant Species known to occur in the Lake Perris/Mystic Lake area.

PROPOSED CONSTRAINED LINKAGE 20
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge
(ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
360 90 270 60 arroyo toad, western pond turtle, tricolored blackbird, mountain plover, white-faced ibis, Los Angeles pocket mouse, San Jacinto Valley crownscale, Parish's brittlescale, Davidson's saltscale, thread-leaved brodiaea, vernal barley, Coulter's goldfields, spreading navarretia, Wright's trichocoronis. Agriculture Bridge Street, Hemet to Corona/Lake Elsinore CETAP Corridor

Proposed Constrained Linkage 21

Proposed Constrained Linkage 21 is comprised of riparian and alluvial fan sage scrub Habitats connecting the upper San Jacinto River to the southern Badlands. It provides Live-In Habitat for certain species and serves as a connection to Core Areas in the Badlands and the San Jacinto River. The Linkage is constrained by Gilman Springs Road on the northern end of the Linkage and proposed General Plan land use designation, Community Development, along Gilman Spring Road to the west of the Linkage. Planning Species for which Habitat is provided within this Linkage include bobcat, Stephens' kangaroo rat, Belding's orange-throated whiptail, San Bernardino kangaroo rat, and Los Angeles pocket mouse. In addition to maintenance of habitat quality, maintenance of floodplain processes along the upper San Jacinto River is important for these species. This Linkage likely provides for movement of common mammals such as bobcat. As shown below, areas not affected by edge within this Linkage total approximately 140 acres of the total 185 acres of the Linkage. Upon Reserve Assembly of this proposed Constrained Linkage, management of edge conditions will be necessary to ensure maintenance of floodplain processes and movement of mammals through this Linkage. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document. Habitat fragmentation or construction of barriers as a result of planned community Development may affect large mammal movement through this Constrained Linkage, and any flood control or alteration of hydrology associated with widening of Gilman Springs Road may affect Habitat supporting arroyo toad and San Bernardino kangaroo rat. Adequate wildlife crossings may be needed to facilitate wildlife movement across Gilman Springs Road.

PROPOSED CONSTRAINED LINKAGE 21
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge
(ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
185 45 140 70 arroyo toad, Belding's orange-throated whiptail, San Bernardino kangaroo rat, Stephens' kangaroo rat, bobcat, and Los Angeles pocket mouse Open Space/ Conservation and Community Development Gilman Springs

Proposed Constrained Linkage 22

Proposed Constrained Linkage 22 is comprised of the portion of San Timoteo Creek extending west from I-10 to De Anza Cycle Park. This Linkage provides Habitat for certain species and a connection to Core Area in the Badlands. This Linkage is constrained by I-10 to the east, San Timoteo Canyon Road and railroad tracks to the north, SR-60 to the south, and by existing agricultural land uses within the City of Beaumont. Planning Species for which Habitat is provided for within this Linkage include least Bell's vireo and Los Angeles pocket mouse. In addition to maintenance of habitat quality, maintenance of floodplain processes along the San Timoteo Creek is important for this species. This Linkage likely provides for movement of common mammals such as bobcat. As shown below, areas not affected by edge within this Linkage total approximately 260 acres of the total 400 acres. Upon Reserve Assembly of this proposed Constrained Linkage, management of edge conditions will be necessary to ensure maintenance of floodplain processes and movement of mammals through this Linkage. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document. Flood control or alteration of hydrology associated with land use activities in the City of Beaumont and with widening of major existing roadways may affect Habitat supporting least Bell's vireo and Los Angeles pocket mouse.

PROPOSED CONSTRAINED LINKAGE 22
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
400 140 260 68 least Bell's vireo, Los Angeles pocket mouse, bobcat City (Beaumont) I-10, SR-60 and San Timoteo Canyon Road

Proposed Constrained Linkage 23

Proposed Constrained Linkage 23 is an upland Linkage located in the vicinity of Cherry Valley, which provides a connection to Bogart County Park and San Timoteo Creek for certain species. This Linkage is constrained by surrounding existing urban and rural residential Development in the City of Calimesa. Planning Species for which Habitat is provided within this Linkage include Bell's sage sparrow, Los Angeles pocket mouse, and San Bernardino mountain kingsnake. Maintenance of a contiguous connection is important for these species. This Linkage likely provides for movement of common mammals such as bobcat. As shown below, areas not affected by edge within this Linkage total approximately 860 acres of the total 1,410 acres. Upon Reserve Assembly of this proposed Constrained Linkage, management of edge conditions will be necessary to provide movement of mammals through this Linkage. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document. Barriers, including roadways and fencing constructed as part of adjacent Development, may result in fragmentation of the Linkage and affect movement through the Linkage by mammals such as bobcats.

PROPOSED CONSTRAINED LINKAGE 23
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge
(ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
1,410 550 860 70 Bell's sage sparrow, Los Angeles pocket mouse, bobcat, and San Bernardino mountain kingsnake City (Calimesa) I-10

Proposed Constrained Linkage 24

Proposed Linkage 24 is comprised of the portion of Temecula Creek east of Redhawk Parkway and west of Pauba Road. This Linkage provides Habitat for wetland species and a connection to Core Areas in Wilson Valley. The Linkage is constrained by existing roadways and planned community Development. Planning Species for which Habitat is provided for within this Linkage include bobcat, mountain lion, Stephens' kangaroo rat, Aguanga kangaroo rat, western pond turtle, yellow warbler, southwestern willow flycatcher, arroyo chub, loggerhead shrike, tree swallow, white-tailed kite, Cooper's hawk and least Bell's vireo. In addition to maintenance of habitat quality, maintenance of existing floodplain processes along Temecula Creek is important for these species. While specific studies of movement along this Linkage have not been conducted, it likely provides for movement of common mammals such as bobcat. As shown below, areas not affected by edge within this Linkage total approximately 110 acres of the total 340 acres of the Linkage. Since this is an existing Constrained Linkage already affected by edge, treatment and management of edge conditions along this Linkage will be necessary to ensure that it provides Habitat and movement functions for species using the Linkage. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

PROPOSED CONSTRAINED LINKAGE 24
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge
(ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
340 230 110 125 arroyo chub, California red-legged frog, coast range newt, western pond turtle, Cooper's hawk, yellow warbler, white-tailed kite, southwestern willow flycatcher, yellow-breasted chat, loggerhead shrike, downy woodpecker, tree swallow, least Bell's vireo, bobcat, and Los Angeles pocket mouse. Community Development, Agricultural and Rural Pauba Road

Pauba Road is an existing road that is proposed to be widened. Proposed widening activities may directly affect Habitat or floodplain processes in Temecula Creek, or may affect movement through this Linkage. Pauba Road crosses Temecula Creek under existing conditions and would continue to cross the creek with proposed widening. Adequate wildlife crossing may be needed to facilitate wildlife movement across Pauba Road.

Proposed Linkage 1

Proposed Linkage 1 consists of the foothills of the Santa Ana Mountains just west of Lee Lake in the west-central region of the Plan Area. The Linkage is contiguous with Existing Core B (Santa Ana Mountains) to the west, Proposed Constrained Linkages 5 (Horsethief Canyon) and 6 (Temescal Wash South) and Proposed Extension of Existing Core 2 (Lake Mathews/Estelle Mountain) to the north, and Proposed Core 1 (Alberhill) to the east. Both Live-In and movement Habitat are provided by the Linkage. Several different routes, ranging from 5,400 to 14,950 feet, may be taken through the Linkage to surrounding MSHCP Conservation Area lands. This Linkage likely provides for movement of common mammals such as bobcat. Mountain lions are also likely to use the Linkage to access Core Areas in the Lake Mathews/Estelle Mountain Reserve. Maintenance of contiguous Habitat with appropriate refugia for resting, such as rockpiles, brushpiles, windfalls, hollow snags and hollow trees, is important for dispersal of juveniles. Since existing urban Development constrains much of the Linkage, and surrounding planned land uses include city (Lake Elsinore) and community center, management of Edge Effects in this area will be necessary. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

PROPOSED LINKAGE 1
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge
(ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
2,310 380 1,930 48 Cooper's hawk, Bell's sage sparrow, loggerhead shrike, mountain quail, coastal California gnatcatcher, Stephens' kangaroo rat, bobcat, and mountain lion. City (Lake Elsinore), Open Space/ Conservation, Rural, Rural Mountainous, Community Development I-15

Proposed Linkage 2

Proposed Linkage 2 is comprised of wetland Habitat associated with Collier Marsh in the City of Lake Elsinore. It supports key populations of the following species: yellow-breasted chat, San Diego ambrosia, downy woodpecker, least Bell's vireo, yellow warbler and southwestern willow flycatcher. Maintenance of wetland functions and values and water quality of Collier Marsh is important for these species. As shown below, areas not affected by edge within this Linkage total approximately 70 acres of the total 160 acres occupied by this Linkage. Since this Linkage may be affected by edge, treatment and management of edge conditions will be necessary to ensure that land uses adjacent to the Linkage do not degrade water quality or inhibit floodplain processes. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

PROPOSED LINKAGE 2
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge
(ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
160 90 70 107 American bittern, mountain plover, southwestern willow flycatcher, black-crowned night heron, osprey, double-crested cormorant, white-faced ibis, and least Bell's vireo City (Lake Elsinore) None

Proposed Linkage 3

Proposed Linkage 3 is generally comprised of upland Habitats in the Gavilan Hills, Harford Springs and proposed North Peak Conservation Bank area under Public/Quasi-Public and private ownership. This Linkage is one of two connections between the Lake Mathews/Estelle Mountain Reserve and Core Areas in Alberhill. Planning Species for which Habitat is provided for within the Linkage include coastal California gnatcatcher, Quino checkerspot butterfly, and Stephens' kangaroo rat. The Linkage also contains clay soils capable of supporting sensitive plant species such as thread-leaved brodiaea, Munz's onion and many-stemmed dudleya. This Linkage likely provides for movement of common mammals such as bobcat, connecting to Core Areas in Lake Mathews/Estelle Mountain and Alberhill. Maintenance of large intact interconnected habitat blocks is important for these species, as well as Conservation of clay soils supporting sensitive plant species. This Linkage is generally unconstrained by existing urban Development or agricultural use. As shown on the table below, 4,620 acres of the total 5,550 acres occupied by the Linkage are not affected by edge. No major Covered Activities are planned to be located within this Linkage; however, adjacent planned land uses, which generally consists of rural Development, may affect resources within the Linkage. Fire, fire suppression, livestock grazing, and off-road vehicle activities associated with the rural land uses may result in adverse Edge Effects. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

PROPOSED LINKAGE 3
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge
(ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
5,550 930 4,620 32 Quino checkerspot butterfly, Munz's onion, many-stemmed dudleya, thread-leaved brodiaea, bobcat, Stephens' kangaroo rat, Belding's orange-throated whiptail, southern California rufous-crowned sparrow and Bell's sage sparrow Rural, Rural Mountainous, Community Development, Open Space/ Conservation None

Proposed Linkage 4

Proposed Linkage 4 is comprised of generally upland Habitat in Reche Canyon. Planning Species for which Habitat is provided for within the Linkage include Bell's sage sparrow, Stephens' kangaroo rat, bobcat, and Nevin's barberry, known to occur within chaparral and coastal sage scrub Habitats. This Linkage likely provides for movement of common mammals such as bobcat, connecting to Box Springs Reserve, the Badlands and San Bernardino County. The Reche Canyon area represents one of the largest intact Core Areas within the MSHCP Plan Area; therefore maintenance of existing large habitat blocks is important for species and reserve design. The Linkage is relatively unconstrained by adjacent planned Rural Mountainous land uses. Major Covered Activities intersecting the Linkage include the San Bernardino to Moreno Valley CETAP Corridor and Reche Canyon Road. Widening of existing Reche Canyon Road will need to consider wildlife crossings as part of the design.

PROPOSED LINKAGE 4
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge
(ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
2,740 550 2,190 41 Bell's sage sparrow, Stephens' kangaroo rat, bobcat, and Nevin's barberry. Rural Mountainous, Open Space, Conservation, Rural, Community Development San Bernardino to Moreno Valley CETAP Corridor, Reche Canyon Road

Proposed Linkage 5

Proposed Linkage 5 is comprised of the portion of San Timoteo Creek extending northwest from Redlands Boulevard to San Bernardino County. This Linkage provides Habitat for a number of Planning Species, including Los Angeles pocket mouse, yellow-breasted chat, least Bell's vireo, bobcat, and yellow warbler. This Linkage likely provides for movement of mountain lion and bobcat connecting to San Bernardino County and Core Areas in the Badlands and Reche Canyon. Maintenance of wetland functions and values and water quality of San Timoteo Creek is important for these species. Widening of San Timoteo Canyon Road may affect movement along this Linkage as well as water quality in San Timoteo Creek.

PROPOSED LINKAGE 5
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge
(ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
210 90 120 89 Cooper's hawk, yellow warbler, southwestern willow flycatcher, yellow-breasted chat, least Bell's vireo, bobcat, Los Angeles pocket mouse Rural Mountainous San Timoteo Canyon Road

Proposed Linkage 6

Proposed Linkage 6 is an upland Linkage connecting San Timoteo Creek and Core Areas in the Badlands to San Bernardino County. It provides Habitat for raptors and movement for species, such as bobcat, connecting to San Bernardino County and San Timoteo Creek. Maintenance of large intact contiguous habitat blocks is important for these species. As shown below, areas not affected by edge within this Linkage total approximately 490 acres of the total 545 acres occupied by this Linkage. Since this Linkage may be affected by edge, treatment and management of edge conditions will be necessary to ensure that it provides Habitat and movement functions for species using this Linkage. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

PROPOSED LINKAGE 6
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
545 55 490 36 Bell's sage sparrow, white-tailed kite, loggerhead shrike, Los Angeles pocket mouse, and bobcat. Rural, Rural Mountainous, City (Calimesa) None

Proposed Linkage 7

Proposed Linkage 7 consists of a patchwork of riparian Habitat associated with the San Jacinto River and Canyon Lake and adjacent upland Habitat occurring within Kabian Park, Canyon Lake, and Four Seasons Conservation Land. Similar to Proposed Linkage 8, this Linkage is a major component of one of the two main east-west connections within the MSHCP Plan Area. The Linkage provides for movement of species connecting to Sedco Hills, Alberhill and to areas upstream along the San Jacinto River. Planning Species for which Habitat is provided for within the Linkage include Bell's sage sparrow, coastal California gnatcatcher, least Bell's vireo, and bobcat. The Linkage also contains the Traver-Willow-Domino soils series, which is capable of supporting several Narrow Endemic Plant Species such as San Jacinto Valley crownscale, vernal barley and spreading navarretia. Maintenance of large intact interconnected habitat blocks is important for these species, as well as maintenance of water quality and existing functions and values of wetland Habitats associated with the the San Jacinto River. As shown on the table below, 2,560 acres of the total 3,400 acres occupied by the Linkage are not affected by edge.

Adjacent planned land uses and major Covered Activities traversing the Linkage, noted in the table below, may affect resources within the Linkage. Adjacent planned land uses generally consist of Community Development and City (Perris, Lake Elsinore and Canyon Lake). The areas within these Cities that are adjacent to the Linkage are generally characterized as urban and rural residential land uses. Land use activities within either the City or Community Development designation, may result in Edge Effects associated with fire suppression, fire, and dispersal of invasive species. Major Covered Activities may also contribute additional Edge Effects such as trash and runoff and result in habitat fragmentation. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document. Construction of the proposed Hemet to Corona/Lake Elsinore CETAP Corridor Alternative 5A and 5E along SR-74 (Ethanac Road) may isolate the Linkage from Core Areas upstream along the San Jacinto River. Improvements to this facility will need to consider a terrestrial crossing for wildlife and maintenance of the hydrology of the San Jacinto River.

PROPOSED LINKAGE 7
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge
(ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
3,400 840 2,560 53 Quino checkerspot butterfly, western pond turtle, burrowing owl, Cooper's hawk, southern California rufous-crowned sparrow, grasshopper sparrow, Bell's sage sparrow, yellow warbler, white-tailed kite, southwestern willow flycatcher, California horned lark, loggerhead shrike, mountain quail, coastal California gnatcatcher, tree swallow, least Bell's vireo, Stephens' kangaroo rat, and bobcat. City (Lake Elsinore, Perris), Rural Mountainous, Community Development Hemet to Corona/Lake Elsinore CETAP Corridor Alternatives SA and SE

Proposed Linkage 8

Proposed Linkage 8 (Sedco Hills/Wildomar) is composed largely of upland Habitat in the Sedco Hills and Wildomar area. This Linkage is a major component of one of the two main east-west connections between Core Areas in the Lake Mathews/Estelle Mountain, Alberhill and the Cleveland National Forest in the western portion of the MSHCP Plan Area and Core Areas in French Valley, Johnson Ranch, Diamond Valley Lake and San Jacinto Mountains in the eastern portion of the MSHCP Plan Area. This Linkage provides Live-In Habitat for over 50 pairs of coastal California gnatcatcher, as well as a connection to other key populations of gnatcatcher known to occur in Alberhill, North Peak and the Ramsgate area. Other Planning Species for which Habitat is provided include Quino checkerspot butterfly, Stephens' kangaroo rat, and bobcat. The grasslands occurring within this proposed Linkage also provide foraging Habitat for a number of raptors. Maintenance of large intact interconnected habitat blocks is important for these species. The northern portion of this Linkage includes a portion of the lower San Jacinto River extending under I-15 to connect with Proposed Extension of Existing Core 3.

As shown on the table below, 4,560 acres of the total 5,470 acres occupied by the Linkage is not affected by edge. Adjacent planned land uses and major Covered Activities traversing the Linkage may affect resources within the Linkage. Adjacent planned land uses generally consist of Community Development and Agriculture. Land use activities within either designation may result in Edge Effects associated with fire suppression, fire, and dispersal of invasive species. Major Covered Activities may also contribute additional Edge Effects such as trash and runoff and result in fragmentation of habitat blocks. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document. Widening of I-215, which abuts this Linkage to the east, may isolate the Linkage from Core Areas in French Valley. Improvements to this facility will need to consider both an avian crossing and terrestrial crossing for wildlife. Widening of I-15 will need to consider maintenance of wildlife movement along the lower San Jacinto River.

This Linkage likely provides for movement of common mammals such as bobcat, connecting to Core Areas in Lake Mathews/Estelle Mountain and Alberhill. Coastal California gnatcatcher may use the Linkage to disperse to other Core Areas supporting gnatcatchers, such as the Hogbacks and Alberhill. Because the coastal California gnatcatcher has lower dispersal capabilities than other small passerine birds, the dispersal of juveniles requires a corridor of native vegetation which provides foraging and cover opportunities to link larger patches of appropriate sage scrub vegetation (Soule 1991).

PROPOSED LINKAGE 8
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge
(ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
5,470 910 4,560 30 Quino checkerspot butterfly, western pond turtle, southern California rufous-crowned sparrow, Bell's sage sparrow, southwestern willow flycatcher, loggerhead shrike, coastal California gnatcatcher, least Bell's vireo, Stephens' kangaroo rat, and bobcat. Agriculture, Community Development Widening of I-215 and of I-15

Proposed Linkage 9

Proposed Linkage 9 is comprised of a mosaic of upland and wetland Habitats in the area known as the Tenaja Corridor. This Linkage provides Live-In Habitat for a number of Planning Species and movement for species connecting to Core Areas in the Santa Rosa Plateau or to the Santa Ana Mountains in the Cleveland National Forest. Planning Species for which Habitat is provided for within this Linkage include three fairy shrimp species. Maintenance of water quality in this Linkage and the watershed supporting the vernal pools is important for these species. This Linkage also provides for movement of species, including mountain lion and bobcat, through the Tenaja Corridor to the Santa Rosa Plateau and the Cleveland National Forest. Maintenance of habitat quality and large contiguous Habitat with appropriate refugia for resting, such as rockpiles, brushpiles, windfalls, hollow snags and hollow trees, is important for dispersal of juvenile bobcat and mountain lion. As shown below, areas not affected by edge within this Linkage total approximately 2,730 acres of the total 3,100 acres occupied by this Linkage. Habitat fragmentation or construction of barriers as a result of planned Rural Mountainous Development may affect large mammal movement through this Linkage.

PROPOSED LINKAGE 9
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge
(ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
3,100 370 2,730 28 vernal pool fairy shrimp, Santa Rosa plateau fairy shrimp, Riverside fairy shrimp, California red-legged frog, southern California rufous-crowned sparrow, loggerhead shrike, bobcat, mountain lion, California black walnut and Engelmann oak. Rural Mountainous None

Proposed Linkage 10

Proposed Linkage 10 consists of an upland connection in the southwest region of the Plan Area extending from Existing Core F (Santa Rosa Plateau Ecological Reserve) in the north to Existing Core G (Santa Margarita Ecological Reserve) in the south. Private lands compose the entirety of the Linkage, which consists of upland Habitat complementary to the riparian Linkage provided between these two Cores by Proposed Constrained Linkage 13 (Murrieta Creek). This Linkage, which is only somewhat constrained by existing urban Development, provides for movement between these two Cores for species such as bobcat and mountain lion. Although the Linkage is somewhat lengthy at 5.5 miles, it is also nearly a mile wide and thus provides Live-In Habitat for many species. Surrounding planned land uses are approximately evenly divided between Rural Mountainous and city (Murrieta, Temecula). In areas of the Linkage bordering Cities, treatment of edge conditions will be necessary to maintain the proper Habitat and movement functions of the Linkage.

PROPOSED LINKAGE 10
Approximate Dimension Data for Linkage Planning Species Generalized Adjacent Planned
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge
(ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
1,520 400 1,120 51 southern California rufous-crowned sparrow, grasshopper sparrow, Bell's sage sparrow, turkey vulture, mountain quail, bobcat, mountain lion, California black walnut, and Engelman oak. Rural Mountainous, City (Murrieta, Temecula) I-15

Proposed Linkage 11

Proposed Linkage 11 (Soboba/Gilman Springs) is located in the northeastern section of the Plan Area. This Linkage connects to Proposed Core 3 (Badlands/Potrero) in the north, Existing Core K (San Jacinto Mountains) in the southeast, and Proposed Core 5 (Upper San Jacinto River) to the southwest. Private lands compose the entirety of the Linkage, which is only somewhat constrained by existing urban Development. This Linkage likely provides for movement of common mammals such as bobcat and may be an important Linkage area for mountain lions moving between the Badlands and the San Jacinto Mountains. Tributaries to the San Jacinto River occur within this Linkage that support arroyo toad and Los Angeles pocket mouse.

A low proportion of the area of the Linkage is affected by edge (approximately 190 acres of the total 1,670 acres), and the Linkage is 6,020 feet wide; thus Proposed Linkage 11 provides Live-In Habitat for many species in addition to movement Habitat. Nonetheless, management of edge conditions along the Linkage will be necessary due to surrounding planned land uses and possible effects of planned facilities such as Soboba Road. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document. A terrestrial crossing for mammals and reptiles may need to be considered at Soboba Road.

PROPOSED INKAGE 11
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total
(ac.)
Approx.
Edge
(ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
1,670 190 1,480 32 arroyo toad, southern California rufous-crowned sparrow, Bell's sage sparrow, cactus wren, loggerhead shrike, San Bernardino kangaroo rat, Stephens' kangaroo rat, bobcat, Los Angeles pocket mouse, and mountain lion. Open Space/ Conservation, Community Development Soboba Road

Proposed Linkage 12

Proposed Linkage 12 is comprised of riparian Habitats associated with San Timoteo Creek. Planning Species which use this Linkage include yellow warbler, white-tailed kite, yellow-breasted chat, least Bell's vireo, and Los Angeles pocket mouse. This Linkage likely provides for movement of common mammals such as bobcat connecting to San Bernardino County and Core Areas in the Badlands. Maintenance of habitat quality and wetland functions and values of San Timoteo Creek are important for these species.

As shown on the table below, 1,340 acres of the total 1,530 acres occupied by the Linkage are not affected by edge. This Linkage is relatively unconstrained by adjacent land uses, which include planned Rural Mountainous land uses and rural portions of the City of Calimesa. Widening of San Timoteo Creek may affect resources within the Linkage by contributing to Edge Effects such as runoff and trash. Improvements to this Covered Activity should be conducted away from the creek to conserve wetland functions and values. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

PROPOSED LINKAGE 12
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge
(ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
1,530 190 1,340 48 Cooper's hawk, Bell's sage sparrow, yellow warbler, white-tailed kite, southwestern willow flycatcher, yellow-breasted chat, loggerhead shrike, least Bell's vireo, San Bernardino kangaroo rat, Stephens' kangaroo rat, bobcat, and Los Angeles pocket mouse Rural, Rural Mountainous, City (Calimesa), Open Space/ Conservation, Community Development San Timoteo Canyon Road

Proposed Linkage 13

Proposed Linkage 13 is comprised of Tucalota Creek and adjacent upland Habitats. It is one of two Linkages connecting Core Areas in Diamond Valley Lake, Lake Skinner and Johnson Ranch to Core Areas in the eastern portion of the MSHCP Plan Area. Because this Linkage is generally unconstrained by existing urban development or agricultural use, the Linkage provides Live-In Habitat for several Planning Species, including Quino checkerspot butterfly and Stephens' kangaroo rat . The Linkage also provides a connection for coastal California gnatcatcher, southwestern willow flycatcher, and bobcat, connecting to Core Areas in Diamond Valley Lake, Lake Skinner, and Wilson Valley. Maintenance of habitat quality, intact interconnected habitat blocks and wetland functions and values of Tucalota Creek are important for these species. As shown on the table below, 1,570 acres of the total 1,910 acres occupied by the Linkage are not affected by edge. No major Covered Activities are planned to be located within this Linkage; however, adjacent planned land uses, which generally consists of rural and Rural Mountainous Development may affect resources within the Linkage. Fire, fire suppression, livestock grazing, and off-road vehicle activities associated with these land use designations may result in adverse Edge Effects. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

PROPOSED LINKAGE 13
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge
(ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
1,910 340 1,570 41 Quino checkerspot butterfly, arroyo toad, western pond turtle, Cooper's hawk, tricolored blackbird, southern California rufous-crowned sparrow, grasshopper sparrow, Bell's sage sparrow, golden eagle nest site, burrowing owl, cactus wren, turkey vulture, northern harrier, white-tailed kite, loggerhead shrike, coastal California gnatcatcher, tree swallow, least Bell's vireo, Stephens' kangaroo rat, bobcat, Los Angeles pocket mouse, Jaeger's milk-vetch, and California muhly. Rural, Rural Mountainous None

Proposed Linkage 14

Proposed Linkage 14 is comprised of a mosaic of upland Habitat in the Mica Butte area. It provides Core Areas for a number of Planning Species, including Quino checkerspot butterfly, Bell's sage sparrow, and bobcat. It also provides a connection to Core Areas in Cactus Valley and the Diamond Valley Lake/Lake Skinner area for species such as mountain lion. Maintenance of habitat quality, as well as maintenance of large interconnected intact habitat blocks are important for these species. As shown below, areas not affected by edge within this Linkage total approximately 3,990 acres of the total 4,320 acres occupied by this Linkage. Fire, fire suppression, off-road vehicle and grazing activities associated with adjacent planned agricultural and Rural Mountainous land uses may adversely affect Quino checkerspot butterfly. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

PROPOSED LINKAGE 14
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total
(ac.)
Approx.
Edge
(ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
4,320 330 3,990 20 Quino checkerspot butterfly, Bell's sage sparrow, cactus wren, Stephens' kangaroo rat, bobcat, Los Angeles pocket mouse, and mountain lion. Rural Mountainous, Agriculture None

Proposed Linkage 15

Proposed Linkage 15 is comprised of upland Habitat connecting the San Jacinto Mountains to existing Noncontiguous Habitat Block C. This Linkage provides Habitat and connectivity for Quino checkerspot butterfly, known to occur in this area. Other Planning Species that may use this Linkage include bobcat and mountain lion. Maintenance of habitat quality and contiguous habitat blocks is important for these species. As shown below, areas not affected by edge within this Linkage total approximately 570 acres of the total 690 acres occupied by this Linkage. Since this Linkage may be affected by edge, treatment and management of edge conditions will be necessary to ensure that it provides Habitat and movement functions for species using this Linkage. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document. Existing vehicle traffic on roadways within the Linkage may affect Quino checkerspot butterfly during their flight season.

PROPOSED LINKAGE 15
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge
(ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
690 120 570 38 Quino checkerspot butterfly, San Bernardino mountain kingsnake, bobcat and mountain lion. Rural None

Proposed Linkage 16

Proposed Linkage 16 is comprised of Tule Creek and adjacent upland Habitat. This Linkage provides Habitat for a number of Planning Species, including Quino checkerspot butterfly, coastal California gnatcatcher, bobcat, mountain lion, and Stephens' kangaroo rat. It also serves as a Linkage for species connecting to Core Areas in Wilson Valley, Vail Lake, Silverado Ranch and Anza Borrego State Park. Maintenance of wetland function and values along Tule Creek and maintenance of large intact interconnected habitat blocks are important for these species. As shown below, areas not affected by edge within this Linkage total approximately 2,570 acres of the total 2,710 acres occupied by this Linkage. As rural planned land uses are developed along the edge the Linkage, the indirect effects of runoff may affect resources within this Linkage. Guidelines Pertaining to Urban/Wildlands Interface for the management of edge factors such as lighting, urban runoff, toxics, and domestic predators are presented in Section 6.1 of this document.

PROPOSED LINKAGE 16
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge (ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
2,710 140 2,570 27 Quino checkerspot butterfly, Bell's sage sparrow, golden eagle nest site, cactus wren, coastal California gnatcatcher, least Bell's vireo, Aguanga kangaroo rat, Stephens' kangaroo rat, bobcat, Los Angeles pocket mouse, and mountain lion. Rural None

Proposed Linkage 17

Proposed Linkage 17 is comprised of Kolb Creek. It provides Habitat for a number of Planning Species, including mountain lion, bobcat, western pond turtle, Quino checkerspot butterfly, slender-horned spine flower, and Stephens' kangaroo rat. It also provides movement for species connecting to Core Areas in Wilson Valley, Vail Lake, and the Agua Tibia Wilderness Area. This Linkage contributes to regional connectivity between open space in San Diego County and Core Areas in Wilson Valley and Vail Lake. Conservation of wetland functions and values in Kolb Creek is important for this Linkage, as well as maintenance of large intact interconnected habitat blocks. As shown below, areas not affected by edge within this Linkage total approximately 340 acres of the total 405 acres occupied by this Linkage. SR-79 is an existing roadway that is planned to be widened. Planned widening activities may directly affect Habitat, floodplain processes along Kolb Creek important to the species noted below, or may affect movement through this Linkage.

PROPOSED LINKAGE 17
Approximate Dimension Data for Linkage Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.
Edge
(ac.)
Approx.
Interior (ac.)
Approx.
Perimeter/
Area Ratio
(ft/ac)
405 65 340 54 Quino checkerspot butterfly, arroyo chub, arroyo toad, Cooper's hawk, tricolored blackbird, cactus wren, yellow warbler, white-tailed kite, prairie falcon, peregrine falcon, bald eagle, yellow-breasted chat, downy woodpecker, osprey, double-crested cormorant, purple martin, tree swallow, least Bell's vireo, Aguanga kangaroo rat, Stephens' kangaroo rat, bobcat, Los Angeles pocket mouse, bobcat, Nevin's barberry, Parry's spine flower, and slender-horned spine flower. Open Space/ Conservation, Rural SR-79

Proposed Linkage 18

Proposed Linkage 18 is comprised of Arroyo Seco Creek. It provides Habitat for a number of Planning Species, including mountain lion, bobcat, western pond turtle, Quino checkerspot butterfly, slender-horned spine flower, and Stephens' kangaroo rat. It also provides movement for species connecting to Core Areas in Wilson Valley, Vail Lake, and the Agua Tibia Wilderness Area. This Linkage contributes to regional connectivity between open space in San Diego County and Core Areas in Wilson Valley and Vail Lake. Conservation of wetland functions and values in Arroyo Seco Creek is important for this Linkage, as well as maintenance of large intact interconnected habitat blocks. As shown below, areas not affected by edge within this Linkage total approximately 170 acres of the total 210 acres occupied by this Linkage. SR-79 is an existing roadway that is planned to be widened. Planned widening activities may directly affect Habitat, floodplain processes along Arroyo Seco Creek important to the species noted below, or may affect movement through this Linkage.

PROPOSED LINKAGE 18
Size of Existing Core Planning Species Adjacent Proposed
General Plan
Land Use
Major Covered Activities Potentially Affecting Linkage
Approx.
Total (ac.)
Approx.Edge (ac.) Approx.Interior (ac.) Approx.
Perimeter/
Area Ratio
(ft/ac)
210 40 170 90 Quino checkerspot butterfly, arroyo chub, arroyo toad, Cooper's hawk, tricolored blackbird, cactus wren, yellow warbler, white-tailed kite, prairie falcon, peregrine falcon, bald eagle, yellow-breasted chat, downy woodpecker, osprey, double-crested cormorant, purple martin, tree swallow, least Bell's vireo, Aguanga kangaroo rat, Stephens' kangaroo rat, bobcat, Los Angeles pocket mouse, bobcat, Nevin's barberry, Parry's spine flower, and slender-horned spine flower. Open Space/ Conservation, Rural SR-79

3.3 AREA PLANS

3.3.1 Introduction to Area Plans

As discussed in Section 3.1 of this document, the MSHCP is a criteria-based plan and identification of planning units on which to base the Criteria is necessary for such a criteria-based plan. The County's General Plan Area Plan boundaries were selected to provide the broad organizational framework for the Criteria (Figure 2-5). While these boundaries are not biologically based, they related specifically to County planning boundaries and to the boundaries of incorporated Cities within the MSHCP Plan Area. The Area Plan framework for the criteria-based approach was selected to structure implementation strategies around established planning boundaries.

Methods

For each Area Plan within the MSHCP Plan Area, the following methodology was applied. The approach is primarily map-based and relies on existing data compiled for species and Vegetation Communities as well as conservation biology principles. Information obtained during the habitat assessment workshops, additional communications with the Wildlife Agencies and local biologists regarding biological issues and conservation priorities, and specific project information obtained from various sources were also used in the Criteria development process.

The first steps in preparation of the Area Plan Criteria involved identification of: (1) Planning Species; (2) Biological Issues and Considerations; and (3) reserve configuration and management issues. For each Area Plan, several wildlife and plant species known to occur within the Area Plan were selected as Planning Species to provide guidance for Conceptual Reserve Design. Listed species and species with specific habitat requirements, such as Bell's sage sparrow (requires large patches of undisturbed Habitat) or bobcat (requires ability for movement with less tolerance to human presence than other species such as coyote), were generally selected as Planning Species. Biological Issues and Considerations, such as maintenance of key habitat blocks or Linkages, were also identified for each Area Plan. The Planning Species and Biological Issues and Considerations for each Area Plan Subunit are identified in the Area Plan texts included in Sections 3.3.2 through 3.3.17 of this document. Reserve configuration issues were generally addressed on a Plan Area wide basis and are incorporated in the Description of the MSHCP Conservation Area in Section 3.2 and in the discussion of Cores and Linkages in that section. In each Area Plan text, applicable Cores and Linkages are identified. Other general reserve configuration and management issues were also considered as appropriate for each Area Plan including the following:

For each Area Plan, a Conceptual Reserve Design was roughly sketched onto a vegetation map with Planning Species occurrence data and Biological Issues and Considerations highlighted. The concept was refined based on constraints and opportunities as represented on existing and planning land use maps, aerial photographs, topography maps, parcel maps, existing land ownership maps and edge area maps. Consideration was given to adjacent Area Plans to provide for appropriate edge matching and appropriate connectivity across planning and jurisdictional boundaries. The Conceptual Reserve Design developed during this process was used primarily for the purposes of drafting Area Plan Criteria, developing target acreage ranges for Area Plan Subunits, and developing quantitative data for the MSHCP species analyses. The conceptual designs for each Area Plan do not represent the only possible MSHCP Conservation Area that may be assembled within a particular Area Plan during the long-term MSHCP implementation process. Flexibility is incorporated in the target acreage ranges and the Area Plan Criteria to allow Reserve Assembly to be informed by project-specific data and planning as part of the MSHCP implementation process. In addition, a Criteria Refinement Process is incorporated in the MSHCP as discussed in Section 6.5 of this document.

The following specific map resources were used in development of the Conceptual Reserve Design for each Area Plan:

USGS quarter sections (i.e., approximate 160-acre Cells) were then overlain on the Conceptual Reserve Design such that each Cell is an area in real space with a legal description but without being tied to a specific County assessor's legal parcel. Cells were then either aggregated into a Cell Group or retained as individual Cells depending upon the level of Conservation and configuration of the particular Cell or Cell Group. Cells with conservation goals anticipated to be less than 5% were either eliminated or aggregated into a Cell Group. Cells with conservation goals anticipated to be greater than 90% were aggregated into a Cell Group. Cells and Cell Groups were then aggregated into Area Plan Subunits and each Area Plan Subunit was named and numbered. Variable target acreage ranges, Planning Species and Biological Issues and Considerations were identified for each Area Plan Subunit. The variable target acreage ranges were generally based on the difference between the area of the Criteria Area for the particular Subunit and the area of the Conceptual Reserve Design for the particular Subunit. Figure 3-3 and Table 3-2 depict the locations of the Area Plan Subunits and provide a summary of the target acreage ranges for each Subunit. The names of the Subunits, and Planning Species and Biological Issues and Considerations for each Subunit are presented in the individual Area Plan texts in Sections 3.3.2 through 3.3.17 of this document.





TABLE 3-2
TARGET ACREAGE RANGES BY AREA PLAN SUBUNIT
SUBUNIT Range of Acres within Additional Reserve Lands
Low Midpoint High
Cities of Riverside and Norco
SU1 - Santa Ana River South 75 140 200
SU2 - Sycamore Canyon West 15 25 40
Subtotal within Area Plan 90 165* 240
Eastvale Area Plan
SU1 - Santa Ana River Central 145 220 290
Subtotal within Area Plan 145 220* 290
Elsinore Area Plan
SU1 - Estelle Mountain/Indian Canyon 4,100 5,065 6,030
SU2 - Alberhill 1,760 2,385 3,010
SU3 - Elsinore 925 1,370 1,815
SU4 - Sedco Hills 2,415 3,130 3,845
SU5 - Ramsgate 1,645 2,090 2,535
SU6 - Steele Peak 855 1,070 1,280
Subtotal within Area Plan 11,700 15,110* 18,515
Harvest Valley / Winchester Area Plan
SU1 - French Valley/Diamond Valley Lake Connection 130 135 145
SU2 - Hemet Vernal Pool West 300 380 460
Subtotal within Area Plan 430 515* 605
Highgrove Area Plan
SU1 - Sycamore Canyon/Box Springs Central 95 140 180
SU2 - Springbrook Wash North 250 370 495
Subtotal within Area Plan 345 510* 675
Jurupa Area Plan
SU1 - Santa Ana River North 135 190 245
SU2 - Jurupa Mountains✝ 445 750 1,055
SU3 - Delhi Sands Area✝ 310 440 570
Subtotal within Area Plan 890 1,380* 1,870
Lake Mathews / Woodcrest Area Plan
SU1 - Lake Mathews East 1,140 1,410 1,680
SU2 - Dawson Canyon 815 950 1,090
SU3 - Gavilan Hills West 1,175 1,825 2,475
SU4 - Good Hope West 85 155 225
Subtotal within Area Plan 3,215 4,340* 5,470
Lakeview / Nuevo Area Plan
SU1 - San Jacinto River, Middle Reach 2,605 3,315 4,025
SU2 - Lakeview Mountains West 4,045 5,130 6,210
Subtotal within Area Plan 6,650 8,445* 10,235
Mead Valley Area Plan
SU1 - Motte/Rimrock 315 455 590
SU2 - Gavilan Hills East 485 750 1,015
SU3 - Good Hope East 290 390 495
SU4 - San Jacinto River Lower 795 1,165 1,535
Subtotal within Area Plan 1,885 2,760* 3,635
Riverside Extended Mountain Area Plan
SU1 - Cactus Valley 6,020 6,805 7,590
SU2 - Wilson Valley/Sage 26,205 30,815 35,425
SU3 - Temecula & Cottonwood Creeks 1,480 2,115 2,745
SU4 - Tule Creek/Anza Valley 6,415 8,515 10,615
SU5 - Upper San Jacinto River 750 985 1,220
SU6 - Tripp Flats 520 680 840
SU7 - Southern Badlands East 10 20 35
Subtotal within Area Plan 41,400 49,935* 58,470
Reche Canyon / Badlands Area Plan
SU1 - Box Springs East 175 265 350
SU2 - Reche Canyon 1,215 1,915 2,615
SU3 - Badlands North 8,270 9,580 10,895
SU4 - San Jacinto Wildlife Area/Mystic Lake 860 1,305 1,750
Subtotal within Area Plan 10,520 13,065* 15,610
San Jacinto Valley Area Plan
SU1 - Gilman Springs 3,540 5,030 6,520
SU2 - Lakeview Mountains East 1,305 1,730 2,150
SU3 - Upper San Jacinto River/Bautista Creek 2,085 2,980 3,875
SU4 - Hemet Vernal Pool Areas East 940 1,190 1,445
SU5 - Mica Butte 3,670 4,570 5,475
Subtotal within Area Plan 11,540 15,500* 19,465
Southwest Area Plan
SU1 - Murrieta Creek 640 1,055 1,465
SU2 - Temecula & Pechanga Creeks 365 600 840
SU3 - Vail Lake 10,065 11,500 12,930
SU4 - Cactus Valley/SWRC-MSR/Johnson Ranch 4,395 6,180 7,970
SU5 - French Valley/Lower Sedco Hills 4,360 5,880 7,395
SU6 - Santa Rosa Plateau 1,285 2,100 2,915
SU7 - Tenaja Corridor 1,390 2,115 2,845
Subtotal within Area Plan 22,500 29,430* 36,360
Sun City / Menifee Valley Area Plan
SU1 - Warm Springs Creek/French Valley Area 395 480 565
SU2 - Lower Sedco Hills 725 875 1,020
Subtotal within Area Plan 1,120 1,355* 1,585
Temescal Canyon Area Plan
SU1 - Santa Ana River/Santa Ana Mountains 250 400 550
SU2 - Prado Basin 200 300 395
SU3 - Temescal Wash West 2,790 3,600 4,415
SU4 - La Sierra Hills/Lake Mathews West 210 285 355
SU5 - Temescal/Santa Ana Mountains 35 60 85
Subtotal within Area Plan 3,485 4,645* 5,800
The Pass Area Plan
SU1 - Potrero/Badlands 5,570 7,420 9,275
SU2 - Badlands/San Bernardino National Forest 1,105 1,650 2,195
SU3 - San Timoteo Creek 1,865 2,160 2,455
Subtotal within Area Plan 8,540 11,230* 13,925
* Totals do not include acreage adjustments for planned roadways.
✝ See also species-specific conservation objectives 1A, 1B and 1C for Delhi Sands flower-loving fly in Table 9-2 of this document for target acreages.

Each Cell was assigned a quadrat cell identification number and each Cell Group was assigned a letter code. For each Cell or Cell Group, Criteria were drafted to provide an explicit description of the areas to be conserved and Criteria were recorded on a matrix for each Area Plan. The individual Area Plan matrices are included with the Area Plan texts in Sections 3.3.2 through 3.3.17 of this document. The Criteria for each Cell or Cell Group provide: (1) a statement of the Core and Linkage features within the particular Cell or Cell Group toward which Reserve Assembly will be directed; (2) a statement of the focus of Conservation within the particular Cell or Cell Group; (3) a statement of the reserve configuration or connectivity focus for the particular Cell or Cell Group; and (4) a statement of the geographic location and percentage of Conservation desired within the particular Cell or Cell Group. For example, the Criteria for a particular Cell might be: "Conservation within this Cell will contribute to assembly of Proposed Core 6. Conservation within this Cell will focus on coastal sage scrub and chaparral. Conservation within this Cell will be connected to proposed Conservation within Cell 1234 to the west. Conservation within this Cell will occur in the northern 30%-40% of the Cell." It should be noted that the Criteria statements for Cells and Cell Groups are intended to be considered as a whole to guide Reserve Assembly; individual Criteria statements are not intended to be used as stand-alone guidance for Reserve Assembly. The Criteria are written with the intent that a "non-technical observer" could re-create the initial MSHCP Conservation Area concept for the particular Cell or Cell Group. In the Criteria matrices for the individual Area Plans, Cell Groups are listed first in letter order (A, B, C, D, etc.) with individual Cells in a Cell Group listed in numerical order, followed by individual Cells (not in a Cell Group) listed in numerical order.

Results

The Area Plan texts in the following Sections 3.3.2 through 3.3.17 present the Results of the application of the Methodology described above. Implementation of the Reserve Assembly guidance incorporated in the MSHCP including the guidance provided in the descriptions of the MSHCP Conservation Area, the Cores and Linkages, the Area Plan Subunit Biological Issues and Considerations and Planning Species, and the Cell and Cell Group Criteria are intended to result in a MSHCP Conservation Area configuration that provides significant blocks of Habitat, minimizes internal fragmentation and Edge Effects, and maximizes the ratio of surface area to perimeter.

Criteria Review Consistency Process

Application of the Reserve Assembly guidance provided in the MSHCP is intended to occur sequentially, beginning at the broad, landscape scale and proceeding through the individual Cell Criteria. This sequential approach is important to achieve the desired outcome, which, as noted above, is a reserve configuration that provides significant blocks of Habitat and minimizes internal fragmentation. When individual projects are considered, Permittee staff and applicants should first examine the project in the context of the overall MSHCP Conservation Area by relating the project to the MSHCP Conservation Area description in Section 3.2.2 of the Plan and the descriptions of the applicable Cores and Linkages in Section 3.2.3 of the Plan. The descriptions of the Cores and Linkages include factors such as variable target acreages and perimeter to area ratios, as well as species, configuration and management issues, and all of those factors should be reviewed to provide a context for the review of the particular individual project. Staff and applicants can then have a common understanding of the reserve configuration requirements of the MSHCP in the general project area. After such an understanding of the context, staff and applicants should look at the particular individual project more specifically to examine how it might contribute to, or conflict with, assembly of the MSHCP Conservation Area consistent with reserve configuration requirements.

The sequential process should continue with identification of the specific Area Plan and Area Plan Subunit within which the particular individual project is located. Planning Species and Biological Issues and Considerations as well as variable target acreages for the overall Area Plan and Area Plan Subunit should be reviewed between Permittee staff and the applicant along with any available project specific biological information. Planning Species and Biological Issues and Considerations that apply to the specific project should be identified. Not all Planning Species and Biological Issues and Considerations for a particular Area Plan or Area Plan Subunit will apply to every project.

The process should continue with a review of the specific Criteria for the identified Cell or Cell Group within which the project site is located. The first criterion for each Cell or Cell Group is the identification of the applicable Core or Linkage. This relationship of the project to the applicable Core or Linkage should already have been identified and discussed as part of the first steps in the sequential process. The next criteria for each Cell or Cell Group are the identification of Vegetation Communities toward which Conservation should be directed along with connectivity requirements. These criteria should be considered for each individual project based on the context established through the earlier review of Cores and Linkage and the overall MSHCP Conservation Area description. Finally, the project should be examined with respect to the percentage conservation portion of the Cell Criteria, which is the last criterion provided for each Cell and Cell Group. While achieving the precise percentage conservation criterion for each Cell or Cell Group would ultimately result in assembly of 153,000 acres of Additional Reserve Lands as envisioned in the MSHCP, it should be noted that achievement of the variable target acreages will be measured on a Core and Linkage or Area Plan and Area Plan Subunit basis, not on an individual project or Cell/Cell Group basis. As noted in the discussion of Reserve Assembly Accounting in Section 6.7, adjustments are anticipated during the long-term MSHCP implementation process to respond to new information and baseline changes.

Implementation of this sequential review process will require active and informed participation on the part of Permittee staff and project applicants. Training of Permittee staff will occur within the first year of MSHCP implementation and will be ongoing during the life of the Permit.

It will be necessary to document the process described above in the form of findings that the proposed project has been determined to be consistent with the requirements of the MSHCP. An approach and format for these findings is provided below.

Implementation and Findings documenting the process described above will be made by the Local Permittees for each project for which a Criteria consistency review is conducted and will be included in the appropriate project review and approval documentation. The information and Findings will include the following:

  1. Brief description of project and location focusing on location of the project with respect to applicable MSHCP Core or Linkage, Area Plan Subunit and Cell or Cell Group;
  2. Brief description of onsite biological resources focusing on presence or absence of Planning Species identified for the applicable Core or Linkage and Area Plan Subunit, Biological Issues and Considerations identified for the applicable Area Plan Subunit, and focus Vegetation Communities and connectivity identified for the applicable Cell or Cell Group;
  3. Brief analysis of the relationship of the project as proposed to the biological resources issues noted in (b) and discussion of the proposed project contribution toward achieving the MSHCP Criteria;
  4. Brief discussion of any conflicts with the MSHCP Criteria due to project design features, surrounding land use conditions, on?site conditions different from those anticipated in the MSHCP or other appropriate factors and summary of features incorporated in the project to address those conflicts;
  5. Statement of Findings that the proposed project has been determined to be consistent with the MSHCP Criteria and the rationale for this determination. The Findings shall incorporate the information generated as part of (a) through (d) above and shall specifically describe the consistency of the project with Reserve Assembly criteria with emphasis on reserve configuration and connectivity and covered species.

Equivalent or biologically superior findings made in accordance with the processes described in Sections 6.1.2, 6.1.3, 6.3.2 and 6.5 of this document may be combined with these Criteria review consistency findings. When project consistency findings have been made and accepted by the Local Permittees, the Reserve Assembly Criteria in Sections 3.3.2 through 3.3.17 of the Plan will no longer apply to the project site for which such consistency findings have been made.

Once consistency findings are made for a project, subsequent permits for the same project are only subject to substantial conformance review when subsequent permits are issued. For example, if consistency findings are made at the specific plan level, review at the tentative map level would be limited to review for substantial conformance with the initial consistency findings. Likewise, it is understood that review of a site for consistency with the MSHCP Criteria is properly made when the site is initially converted from vacant to developed land. Redevelopment of a site from one urban use to another would not be subject to MSHCP Criteria except with respect to the potential net change in the requirements. For example, if four houses are demolished and six houses are proposed at the same location, only the additional two houses will be subject to the MSHCP requirements. Likewise, if a slaughterhouse is initially reviewed and determined to be consistent with the MSHCP Criteria, later conversion of this use to another developed use would not trigger MSHCP requirements with the exception of requirements associated with payment of fees.

Criteria Review Consistency Prior to MSHCP Adoption

During the conservation planning process for the MSHCP, a number of projects have proceeded through the entitlement process or have been the subject of a Memorandum of Understanding (MOU) and have sometimes been modified to be consistent with the MSHCP Core and Linkage guidelines, Area Plan Subunit Biological Issues and Considerations and Cell Criteria. Several of these projects have received local and/or state or federal approvals, but have not yet commenced construction. Future construction of these projects in accordance with the relevant approvals would be considered to be consistent with the MSHCP guidelines and Criteria. Projects known to fall within this category are listed below.

Project Name* Area Plan/Area Plan Subunit Core or Linkage Designation Cell(s) or Cell Group(s) Acreage Conserved
(acres)
Approval Citation
TR30052 SWAP/SU2 Proposed Constrained Linkage 24 7274, 7275 13.9 Board of Supervisors 9/25/01
SP284 (Planning Area #1)
APNs: 467-240-044, 047 and 049
SWAP/SU5 Proposed Constrained Linkage 18 5572 17.7 Board of Supervisors 3/13/01
SP310 SWAP/SU 4 and 5 Proposed Constrained Linkage 17 5067, 5068, 5170, 5169 54.9 Board of Supervisors 12/18/01
TR29114/PM30239 SWAP/SU5 Proposed Constrained Linkage 18 5477 28.5 Board of Supervisors 12/11/01
TR29484/GPA521 SWAP/SU5 Proposed Core 2 5570 12.4 Board of Supervisors 8/28/01
PM29704 Sun City/Menifee/ SU1 Proposed Core 2 5066 9.0 Board of Supervisors 4/17/02
PM29228 Sun City/Menifee SU1 Proposed Core 2 5165 65.0 Board of Supervisors 7/5/01
SP323 Highgrove
SU2
Proposed Linkage 4 and Existing Noncontiguous Habitat Block A 97, 101, 146, 148, 197 251.4 Board of Supervisors 4/10/01
SP327 Lake Mathews/ SU2
Elsinore/SU1
Temescal Cyn/ SU3
Proposed Extension of Existing Core 2 3037, 3040, 3041, 3144, 3145, 3146, 3246, 3248, 3349, 3350, 3448 580.0 onsite
445.0 offsite
MOU between County of Riverside and Sunny Sage LLC, Board of Supervisors 6/10/03

* Note: The MSHCP Conservation Area lands contributed by the projects listed above were negotiated in the course of Interim Project Review (IPR). IPR used the available MSHCP information at the time and recognized that the information that gave rise to the Cells noted above and in the MSHCP was still in an iterative state of refinement. In many instances, the Cells did not exist at the time of project negotiations.

There are other projects that, while having used the recommendations of the IPR in their respective project designs and ultimate MSHCP contributions, are still being processed through the land use entitlement process and have not yet received final legislative approval. These projects are being evaluated against the best available MSHCP maps and information and conservation acreages have been proposed and/or determined with the project applicants.

3.3.2 Eastvale Area Plan

This section identifies target acreages, applicable Cores and Linkages, Area Plan Subunits and Criteria for the Eastvale Area Plan. For a summary of the methodology and map resources used to develop the target acreages and Criteria for the MSHCP Conservation Area, including this Area Plan, see Section 3.3.1.

Target Acreages

The target conservation acreage for the Eastvale Area Plan is 1,040 - 1,185 acres; it is composed of approximately 895 acres of existing Public/Quasi-Public Lands and 145 - 290 acres of Additional Reserve Lands.

Applicable Cores and Linkages

The MSHCP Conservation Area comprises a variety of existing and proposed Cores, Linkages, Constrained Linkages and Noncontiguous Habitat Blocks (referred to here as "Cores and Linkages"). For descriptions of these Cores and Linkages and more information about the biologically meaningful elements of the MSHCP Conservation Area within the Eastvale Area Plan, see Section 3.2.3 and MSHCP Volume II, Section A.

Cores and linkages within the eastvale area plan

• Contains a small portion of Existing Core A

Descriptions of Planning Species, Biological Issues and Considerations and Criteria for each Area Plan Subunit within the Eastvale Area Plan are presented later in this section. These descriptions, combined with the descriptions of the Cores and Linkages referred to above, provide information about biological issues to be considered in conjunction with Reserve Assembly within the Eastvale Area Plan. As noted in Section 3.1, the Area Plan boundaries established as part of the Riverside County General Plan were selected to provide an organizational framework for the Area Plan Subunits and Criteria. While these boundaries are not biologically based, unlike the Cores and Linkages, they relate specifically to General Plan boundaries and the jurisdictional boundaries of incorporated Cities and were selected to facilitate implementation of the MSHCP in the context of existing institutional and planning boundaries.

Area Plan Subunits

The Eastvale Area Plan contains one Subunit. Target conservation acreages for this Subunit are established, as are a description of the Planning Species, Biological Issues and Considerations, and Criteria for this Subunit. For more information regarding specific conservation objectives for the Planning Species, see Section 9.0. Subunit boundaries are depicted on the Cells and Cell Groupings map displays (Figures 3-4 and 3-5). Table 3-3 presents the Criteria for the Eastvale Area Plan.

Subunit 1: Santa Ana River - Central

Target acreage range for Additional Reserve Lands within Subunit: 145-290 acres

Cells within this Subunit: 698, 786, 788, 875, 876, 964 and 965

Planning Species:

Biological Issues and Considerations:

TABLE 3-3
CRITERIA FOR EASTVALE AREA PLAN

Sub
Unit
Cell Group Quadrat
Number
USGS Section Quarter
Section
Criteria
SUBUNIT 1 - Santa Ana River Central
1   698 31 NE Conservation within this Cell will contribute to assembly of Existing Core A. Conservation within this Cell will focus on riparian scrub, woodland and forest and water habitats associated with Santa Ana River. Areas conserved within this Cell will be connected to riparian habitat proposed for conservation to the south in Cell #788 and to the east in Cell #699 of the Jurupa Area Plan. Conservation within this Cell will range from 35%-45% of the southeastern portion of the Cell.
1   786 36 SE Conservation within this Cell will contribute to assembly of Existing Core A. Conservation within this Cell will focus on riparian scrub, woodland and forest and water habitats associated with Santa Ana River. Areas conserved within this Cell will be connected to riparian habitat proposed for conservation to the south in Cell #876 and to the southwest in Cell #875. Conservation within this Cell will range from 20%-30% of the southern portion of the Cell.
1   788 31 SE Conservation within this Cell will contribute to assembly of Existing Core A. Conservation within this Cell will focus on riparian scrub, woodland and forest and water habitats associated with Santa Ana River. Areas conserved within this Cell will be connected to riparian habitat proposed for conservation to the north in Cell #698 and to the northwest in Cell #699 of the Jurupa Area Plan. Conservation within this Cell will range from 20%-30% of the northwestern portion of the Cell.
1   875 01 NW Conservation within this Cell will contribute to assembly of Existing Core A. Conservation within this Cell will focus on riparian scrub, woodland and forest and water habitats associated with Santa Ana River. Areas conserved within this Cell will be connected to riparian habitat proposed for conservation to the south in Cell #965, to the east in Cell #876 and to the portions of these Cells within the City of Norco. Conservation within this Cell will range from 10%-20% of the southern and eastern portion of the Cell.
1   876 01 NE Conservation within this Cell will contribute to assembly of Existing Core A. Conservation within this Cell will focus on riparian scrub, woodland and forest and water habitats associated with Santa Ana River. Areas conserved within this Cell will be connected to riparian habitat proposed for conservation to the north in Cell #786 and to the west in Cell #875 and to the portions of Cell #875 within the City of Norco. Conservation within this Cell will range from 25%-35% of the northern portion of the Cell.
1   964 02 SE Conservation within this Cell will contribute to assembly of Existing Core A. Conservation within this Cell will focus on riparian scrub, woodland and forest and water habitats associated with Santa Ana River. Areas conserved within this Cell will be connected to riparian habitat proposed for conservation to the east in Cell #965 and to the portion of Cell #964 within the City of Norco. Conservation within this Cell will be approximately 5% of the northeastern portion of the Cell.
1   965 01 SW Conservation within this Cell will contribute to assembly of Existing Core A. Conservation within this Cell will focus of riparian scrub, woodland and forest and water habitats associated with Santa Ana River. Areas conserved within this Cell will be connected to riparian habitat proposed for conservation to the north in Cell #875, to the west in Cell #964 and to the portions of these Cells within the City of Norco. Conservation within this Cell will be approximately 5% of the northwestern portion of the Cell.






3.3.3 Elsinore Area Plan

This section identifies target acreages, applicable Cores and Linkages, Area Plan Subunits and Criteria for the Elsinore Area Plan. For a summary of the methodology and map resources used to develop the target acreages and Criteria for the MSHCP Conservation Area, including this Area Plan, see Section 3.3.1.

Target Acreages

The target conservation acreage range for the Elsinore Area Plan is 66,500 - 73,315 acres; it is composed of approximately 54,800 acres of existing Public/Quasi-Public Lands and 11,700 - 18,515 acres of Additional Reserve Lands. The City of Canyon Lake and the City of Lake Elsinore sit entirely within the Elsinore Area Plan. The target acreage range within the City of Canyon Lake is 30 - 50 acres. The target acreage range within the City of Lake Elsinore is 4,830 - 7,870 acres. The target acreages of both Cities are included within the 11,700 - 18,515 acre target conservation range on Additional Reserve Lands for the entire Elsinore Area Plan.

Applicable Cores and Linkages

The MSHCP Conservation Area comprises a variety of existing and proposed Cores, Linkages, Constrained Linkages and Noncontiguous Habitat Blocks (referred to here as "Cores and Linkages"). The Cores and Linkages listed below are within the Elsinore Area Plan. For descriptions of these Cores and Linkages and more information about the biologically meaningful elements of the MSHCP Conservation Area within the Elsinore Area Plan, see Section 3.2.3 and MSHCP Volume II, Section A.

Cores and Linkages within the Elsinore Area Plan

Descriptions of Planning Species, Biological Issues and Considerations and Criteria for each Area Plan Subunit within the Elsinore Area Plan are presented later in this section. These descriptions, combined with the descriptions of the Cores and Linkages referred to above, provide information about biological issues to be considered in conjunction with Reserve Assembly within the Elsinore Area Plan. As noted in Section 3.1, the Area Plan boundaries established as part of the Riverside County General Plan were selected to provide an organizational framework for the Area Plan Subunits and Criteria. While these boundaries are not biologically based, unlike the Cores and Linkages, they relate specifically to General Plan boundaries and the jurisdictional boundaries of incorporated Cities and were selected to facilitate implementation of the MSHCP in the context of existing institutional and planning boundaries.

Area Plan Subunits

The Elsinore Area Plan is divided into six Subunits. For each Subunit, target conservation acreages are established along with a description of the Planning Species, Biological Issues and Considerations, and Criteria for each Subunit. For more information regarding specific conservation objectives for the Planning Species, see Section 9.0. Subunit boundaries are depicted on the Cells and Cell Groupings map displays (Figures 3-6 and 3-7). Table 3-4 presents the Criteria for the Elsinore Area Plan.

Subunit 1: Estelle Mountain/Indian Canyon

Target acreage range for Additional Reserve Lands within Subunit: 4,100-6,030 acres

Cell Groups within this Subunit: A, C, D, E, F, H, I, J, K, L, N, R and S

Cells within this Subunit (not in a Cell Group): 3249, 3351, 3450, 3744, 3745, 3748, 3844, 3949, 3950, 4048, 4050 and 4148

Planning Species:

Biological Issues and Considerations:

Subunit 2: Alberhill

Target acreage range for Additional Reserve Lands within Subunit: 1,760-3,010 acres

Cell Groups within this Subunit: O, P, Q, T, U, V, and W

Cells within this Subunit (not in a Cell Group): 3853, 3854, 3855, 3964, 3966, 3970, 4054, 4057, 4152, 4153, 4154, 4155, 4156, 4157, 4250 and 4251

Planning Species:

Biological Issues and Considerations:

Subunit 3: Elsinore

Target acreage range for Additional Reserve Lands within Subunit: 925-1,815 acres

Cells within this Subunit: 4166, 4169, 4266, 4646, 4647, 4740, 4742, 4743, 4759, 4843, 4844, 4845, 4846, 4937, 4939, 4940, 5033, 5036, 5038, 5131, 5137, 5140, 5240 and 5342

Planning Species:

Biological Issues and Considerations:

Subunit 4: Sedco Hills

Target acreage range for Additional Reserve Lands within Subunit: 2,415-3,845 acres

Cell Groups within this Subunit: Dʹ, Eʹ, Fʹ, Gʹ, Hʹ, Iʹ, Jʹ, Kʹ and Lʹ

Cells within this Subunit (not in a Cell Group): 4550, 4559, 4648, 4656, 4745, 4838, 5149, 5352, 5354, 5456, 5457 and 5559

Planning Species:

Biological Issues and Considerations:

Subunit 5: Ramsgate

Target acreage range for Additional Reserve Lands within Subunit: 1,645-2,535 acres

Cell Groups within this Subunit: X, Y, Z, Aʹ, Bʹ and Cʹ

Cells within this Subunit (not in a Cell Group): 3851, 3955, 3974, 4071, 4078, 4174, 4176, 4178, 4270 and 4272

Planning Species:

Biological Issues and Considerations:

Subunit 6: Steele Peak

Target acreage range for Additional Reserve Lands within Subunit: 855-1,280 acres

Cell Groups within this Subunit: B, G and M

Cells within this Subunit (not in a Cell Group): 3667 and 3670

Planning Species:

Biological Issues and Considerations:


TABLE 3-4
CRITERIA FOR ELSINORE AREA PLAN

Sub
Unit
Cell Group Quadrat
Number
USGS Section Quarter
Section
Criteria
SUBUNIT 1 - Estelle Mountain/Indian Canyon
1 A 3448 12 NE Conservation within this Cell Group will contribute to assembly of Proposed Extension of Existing Core 2. Conservation within this Cell Group will focus on riparian scrub, woodland, forest and Riversidean alluvial fan sage scrub habitat associated with Temescal Wash and adjacent upland habitat. Areas conserved within this Cell Group will be connected to riparian and upland habitat proposed for conservation in Cell #3351 to the north, to riparian habitat proposed for conservation in Cell Group C to the south and to coastal sage scrub and grassland habitat proposed for conservation in Cell #3450 to the east. Conservation within this Cell Group will range from 75%-85% of the Cell Group focusing in the eastern portion of the Cell Group.
1 A 3449 07 NW
1 C 3547 07 SW Conservation within this Cell Group east of I-15 will contribute to assembly of Proposed Extension of Existing Core 2 and conservation within this Cell Group west of I-15 will contribute to assembly of Proposed Linkage 1. Conservation within this Cell Group will focus on Riversidean alluvial fan sage scrub habitat associated with Temescal Wash and adjacent upland habitat. Areas conserved within this Cell Group will be connected to riparian and upland habitat proposed for conservation in Cell Group A to the north, to Riversidean alluvial fan sage scrub habitat proposed for conservation in Cell #3745 to the south and to upland habitat proposed for conservation in Cell Group D to the east. Conservation within this Cell Group will range from 55%-65% of the Cell Group focusing in the southern and northeastern portions of the Cell Group.
1 C 3645 18 NW
1 D 3548 07 SE Conservation within this Cell Group east of I-15 will contribute to assembly of Proposed Extension of Existing Core 2 and conservation within this Cell Group west of I-15 will contribute to assembly of Proposed Linkage 1 and Proposed Constrained Linkage 5. Conservation within this Cell Group east of I-15 will focus on riparian scrub, woodland and forest habitat associated with Temescal Wash and adjacent upland habitat. Conservation within this Cell Group west of I-15 will focus on chaparral habitat in a mosaic with other upland habitat. Areas conserved within this Cell Group will be connected to riparian and upland habitat proposed for conservation in Cell Groups C to the west, E to the east, K to the south and in Cell #3450 to the north. Conservation within this Cell Group will range from 80%-90% of the Cell Group focusing in the southern and northern portions of the Cell Group.
1 D 3646 18 NE
1 E 3549 08 SW Conservation within this Cell Group east of I-15 will contribute to assembly of Proposed Extension of Existing Core 2 and conservation within this Cell Group west of I-15 will contribute to assembly of Proposed Constrained Linkage 5. Conservation within this Cell Group east of I-15 will focus on riparian scrub, woodland and forest habitat associated with Temescal Wash and adjacent upland habitat. Conservation within this Cell Group west of I-15 will focus on chaparral habitat. Areas conserved within this Cell Group will be connected to riparian and upland habitat proposed for conservation in Cell Group F to the east and in Cell Group D to the west. Conservation within this Cell Group will range from 40%-50% of the Cell Group focusing in the northern portion of the Cell Group.
1 E 3647 17 NW
1 F 3550 08 SE Conservation within this Cell Group will contribute to assembly of Proposed Extension of Existing Core 2. Conservation within this Cell Group will focus on riparian habitat associated with Temescal Wash and adjacent coastal sage scrub and grassland habitat. Areas conserved within this Cell Group will be connected to riparian habitat proposed for conservation in Cell #3748 to the south and to riparian and coastal sage scrub habitat proposed for conservation in Cell Group E to the west. Conservation within this Cell Group will range from 65%-75% of the Cell Group focusing in the northern portion of the Cell Group.
1 F 3648 17 NE
1 H 3649 16 NW Conservation within this Cell Group will contribute to assembly of Proposed Constrained Linkage 6. Conservation within this Cell Group will focus on riparian habitat associated with Temescal Wash. Areas conserved within this Cell Group will be connected to riparian habitat proposed for conservation in Cell Group I to the east and in Cell #3748 to the west. Conservation within this Cell Group will range from 5%-15% of the Cell Group focusing in the southern portion of the Cell Group.
1 H 3749 16 SW
1 I 3650 16 NE Conservation within this Cell Group will contribute to assembly of Proposed Constrained Linkage 6. Conservation within this Cell Group will focus on riparian habitat associated with Temescal Wash. Areas conserved within this Cell Group will be connected to riparian habitat proposed for conservation in Cell Group J to the east and in Cell Group H to the west. Conservation within this Cell Group will be approximately 5% of the Cell Group focusing in the southern portion of the Cell Group.
1 I 3750 16 SE
1 J 3457 11 NW Conservation within this Cell Group will contribute to assembly of Proposed Core 1. Conservation within this Cell Group will focus on coastal sage scrub, chaparral, grassland, riparian scrub, woodland and forest habitat. Areas conserved within this Cell Group will be connected to upland habitat proposed for conservation in Cell #3853 and #3855, and Cell Group O all to the south, to coastal sage scrub habitat proposed for conservation in Cell Group L to the east, to riparian habitat proposed for conservation in Cell Group I to the west and to existing PQP Lands to the north and west. Conservation within this Cell Group will range from 75%-85% of the Cell Group focusing in the western and northern portions of the Cell Group.
1 J 3458 11 NE
1 J 3555 11 SW
1 J 3556 11 SE
1 J 3651 15 NE
1 J 3652 14 NW
1 J 3653 15 NW
1 J 3654 14 NE
1 J 3751 15 SW
1 J 3752 15 SE
1 J 3753 14 SW
1 J 3756 14 SE
1 K 3746 18 SE Conservation within this Cell Group will contribute to assembly of Proposed Linkage 1. Conservation within this Cell Group will focus on chaparral, Riversidean alluvial fan sage scrub, riparian scrub, woodland and forest habitat and agricultural land. Areas conserved within this Cell Group will be connected to chaparral and Riversidean alluvial fan sage scrub proposed for habitat in Cell Group D to the north, to chaparral habitat proposed for conservation in Cell #3745 and #3844 both to the west and to chaparral, woodland and forest habitat proposed for conservation in Cell Group R to the south. Conservation within this Cell Group will range from 70%-80% of the Cell Group focusing in the northwestern portion of the Cell Group.
1 K 3846 19 NE
1 L 3658 13 NW Conservation within this Cell Group will contribute to assembly of Proposed Core 1. Conservation within this Cell Group will focus on coastal sage scrub, chaparral and grassland habitat. Areas conserved within this Cell Group will be connected to coastal sage scrub habitat proposed for conservation in Cell Group J to the west, to upland habitat proposed for conservation in Cell Groups, P and Q to the south and to existing PQP Lands also to the south. Conservation within this Cell Group will range from 75%-85% of the Cell Group focusing in the western portion of the Cell Group.
1 L 3671 17 NW
1 L 3672 13 NE
1 L 3673 18 NE
1 L 3685 18 NW
1 L 3759 13 SW
1 L 3767 13 SE
1 L 3774 18 SE
1 L 3775 18 SW
1 N 3849 21 NW Conservation within this Cell Group will contribute to assembly of Proposed Core 1. Conservation within this Cell Group will focus on Riversidean alluvial fan sage scrub and chaparral habitat. Areas conserved within this Cell Group will be connected to chaparral and Riversidean alluvial fan sage scrub habitat proposed for conservation in Cell Group S to the south and to chaparral habitat proposed for conservation in Cell Group H to the north. Conservation within this Cell Group will range from 35%-45% of the Cell Group focusing in the western portion of the Cell Group.
1 N 3850 21 NE
1 R 3946 19 SW Conservation within this Cell Group will contribute to assembly of Proposed Core 1. Conservation within this Cell Group will focus on chaparral, riparian scrub, woodland and forest habitat. Areas conserved within this Cell Group will be connected to chaparral and Riversidean alluvial fan sage scrub habitat proposed for conservation in Cell Group K to the north and to chaparral, woodland and forest habitat proposed for conservation in Cell #3949 to the east and in Cell #4050 to the south. Conservation within this Cell Group will range from 75%-85% of the Cell Group focusing in the southeastern portion of the Cell Group.
1 R 3948 19 SE
1 S 3951 21 SW Conservation within this Cell Group will contribute to assembly of Proposed Core 1. Conservation within this Cell Group will focus on chaparral and Riversidean alluvial fan sage scrub habitat. Areas conserved within this Cell Group will be connected to chaparral and Riversidean alluvial fan sage scrub habitat proposed for conservation in Cell Group N to the north, in Cell #3950 to the west and in Cell #4054 to the south. Conservation within this Cell Group will range from 45%-55% of the Cell Group focusing in the western portion of the Cell Group.
1 S 3952 21 SE
1   3249 06 NW Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 2. Conservation within this Cell will focus on coastal sage scrub habitat. Areas conserved within this Cell will be connected to coastal sage scrub and riparian habitat proposed for conservation in Cell Group H in the Elsinore Area Plan to the west. Conservation within this Cell will be approximately 5% of the Cell focusing in the western central portion of the Cell.
1   3351 06 SW Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 2. Conservation within this Cell will focus on riparian habitat associated with Temescal Wash and adjacent coastal sage scrub and grassland habitat. Areas conserved within this Cell will be connected to upland and riparian habitat proposed for conservation in Cell Group A to the south and in Cell Group I in the Elsinore Area Plan to the west. Conservation within this Cell will range from 45%-55% of the Cell focusing in the southern half of the Cell.
1   3450 07 NE Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 2. Conservation within this Cell will focus on coastal sage scrub and grassland habitat. Areas conserved within this Cell will be connected to upland and riparian habitat proposed for conservation in Cell Group D to the south and to upland habitat proposed for conservation in Cell Group A to the west. Conservation within this Cell will range from 45%-55% of the Cell focusing in the southern half of the Cell.
1   3744 13 SE Conservation within this Cell will contribute to assembly of Proposed Linkage 1. Conservation within this Cell will focus on chaparral, Riversidean alluvial fan sage scrub, woodland and forest habitat. Areas conserved within this Cell will be connected chaparral and Riversidean alluvial fan sage scrub habitat proposed for conservation in Cell #3745 to the east. Conservation within this Cell will range from 35%-45% of the Cell focusing in the northern half of the Cell.
1   3745 18 SW Conservation within this Cell will contribute to assembly of Proposed Linkage 1. Conservation within this Cell will focus on chaparral and Riversidean alluvial fan sage scrub habitat. Areas conserved within this Cell will be connected to chaparral and Riversidean alluvial fan sage scrub habitat proposed for conservation in Cell #3744 to the west and in Cell Group C to the north, to riparian scrub, woodland and forest habitat and agricultural land proposed for conservation in Cell Group K to the east and to chaparral and adjacent habitat proposed for conservation in Cell #3844 to the south. Conservation within this Cell will be approximately 5% of the Cell focusing in the northwestern and southeastern portions of the Cell.
1   3748 17 SE Conservation within this Cell will contribute to assembly of Proposed Constrained Linkage 6. Conservation within this Cell will focus on riparian habitat associated with Temescal Wash and adjacent chaparral and coastal sage scrub habitat. Areas conserved within this Cell will be connected to upland and riparian habitat proposed for conservation in Cell Groups F to the north, H to the east and N to the southeast. Conservation within this Cell will range from 40%-50% of the Cell focusing in the eastern portion of the Cell.
1   3844 19 NW Conservation within this Cell will contribute to assembly of Proposed Linkage 1. Conservation within this Cell will focus on chaparral and adjacent habitat. Areas conserved within this Cell will be connected to chaparral habitat proposed for conservation in Cell #3745 to the north and to chaparral habitat and agricultural land proposed for conservation in Cell Group K to the east. Conservation within this Cell will be approximately 5% of the Cell focusing in the northeastern portion of the Cell.
1   3949 20 SW Conservation within this Cell will contribute to assembly of Proposed Linkage 1. Conservation within this Cell will focus on chaparral, woodland and forest habitat. Areas conserved within this Cell will be connected to chaparral habitat proposed for conservation in Cell #3950 to the east and to chaparral, woodland and forest habitat proposed for conservation in Cell Group R to the west. Conservation within this Cell will range from 65%-75% of the Cell focusing in the southern portion of the Cell.
1   3950 20 SE Conservation within this Cell will contribute to assembly of Proposed Linkage 1. Conservation within this Cell will focus on chaparral, Riversidean alluvial fan sage scrub, woodland and forest habitat. Areas conserved within this Cell will be connected to chaparral habitat proposed for conservation in Cell #3949 to the west and to chaparral and Riversidean alluvial fan sage scrub habitat proposed for conservation in Cell Group S to the east. Conservation within this Cell will range from 55%-65% of the Cell focusing in the southern portion of the Cell.
1   4048 30 NW Conservation within this Cell will contribute to assembly of Proposed Linkage 1. Conservation within this Cell will focus on chaparral habitat. Areas conserved within this Cell will be connected to chaparral habitat proposed for conservation in Cell #4050 to the east and in Cell #4148 to the south. Conservation within this Cell will range from 15%-25% of the Cell focusing in the southeastern portion of the Cell.
1   4050 30 NE Conservation within this Cell will contribute to assembly of Proposed Linkage 1. Conservation within this Cell will focus on chaparral, woodland and forest habitat. Areas conserved within this Cell will be connected to chaparral habitat proposed for conservation in Cell #4048 to the west. Conservation within this Cell will range from 45%-55% of the Cell focusing in the western half of the Cell.
1   4148 30 SW Conservation within this Cell will contribute to assembly of Proposed Linkage 1. Conservation within this Cell will focus on chaparral habitat. Areas conserved within this Cell will be connected to chaparral habitat proposed for conservation in Cell #4048 to the north. Conservation within this Cell will range from 20%-30% of the Cell focusing in the northeastern portion of the Cell.
SUBUNIT 2 - Alberhill
2 O 3856 23 NE Conservation within this Cell Group will contribute to assembly of Proposed Core 1. Conservation within this Cell Group will focus on riparian scrub, woodland and forest habitat associated with Alberhill Creek and adjacent coastal sage scrub and chaparral habitat. Areas conserved within this Cell Group will be connected to coastal sage scrub, riparian scrub, woodland and forest habitat proposed for conservation in Cell Group J to the north, in Cell #3853 to the west and in Cell Group V to the south, and to chaparral and coastal sage scrub habitat proposed for conservation in Cell #3964 also to the south. Conservation within this Cell Group will range from 60%-70% of the Cell Group focusing in the western portion of the Cell Group.
2 O 3859 24 NW
2 P 3862 24 NE Conservation within this Cell Group will contribute to assembly of Proposed Core 1. Conservation within this Cell Group will focus on coastal sage scrub and chaparral habitat. Areas conserved within this Cell Group will be connected to upland habitat proposed for conservation in Cell Groups L to the north and Q to the east and in Cell #3966 and #3970 both to the south. Conservation within this Cell Group will range from 55%-65% of the Cell Group focusing in the eastern portion of the Cell Group.
2 P 3864 19 NW
2 Q 3869 19 NE Conservation within this Cell Group will contribute to assembly of Proposed Core 1. Conservation within this Cell Group will focus on chaparral, coastal sage scrub, riparian scrub, woodland and forest habitat. Areas conserved within this Cell Group will be connected to chaparral and coastal sage scrub habitat proposed for conservation in Cell Group P to the west, to upland habitat proposed for conservation in Cell #3970 also to the west, to chaparral habitat proposed for conservation in Cell Group L to the north, and to coastal sage scrub habitat proposed for conservation in Cell Group M to the east. Conservation within this Cell Group will range from 75%-85% of the Cell Group focusing in the northern portion of the Cell Group.
2 Q 3976 19 SE
2 T 3953 22 SW Conservation within this Cell Group will contribute to assembly of Proposed Core 1. Conservation within this Cell Group will focus on chaparral and coastal sage scrub habitat. Areas conserved within this Cell Group will be connected to chaparral and adjacent habitat proposed for conservation in Cell #4054 to the west, to coastal sage scrub habitat proposed for conservation in Cell #4155 to the south, and to chaparral and coastal sage scrub habitat proposed for conservation in Cell Group U to the east. Conservation within this Cell Group will range from 50%-60% of the Cell Group focusing in the southeastern portion of the Cell Group.
2 T 4055 27 NW
2 U 3954 22 SE Conservation within this Cell Group will contribute to assembly of Proposed Core 1. Conservation within this Cell Group will focus on chaparral and recovery of coastal sage scrub habitat. Areas conserved within this Cell Group will be connected to chaparral and coastal sage scrub habitat proposed for conservation in Cell Group T to the west and in Cell #4156 to the south and to chaparral and grassland habitat proposed for conservation in Cell #4057 to the east. Conservation within this Cell Group will range from 40%-50% of the Cell Group focusing in the western and central portions of the Cell Group.
2 U 4056 27 NE
2 V 3957 23 SW Conservation within this Cell Group will contribute to assembly of Proposed Core 1. Conservation within this Cell Group will focus on riparian scrub, woodland and forest habitat associated with Alberhill Creek and recovery of adjacent coastal sage scrub habitat. Areas conserved within this Cell Group will be connected to coastal sage scrub, riparian scrub, woodland and forest habitat proposed for conservation in Cell Group O to the north and in Cell #3964 to the east and to coastal sage scrub habitat proposed for conservation in Cell Group W to the south. Conservation within this Cell Group will range from 60%-70% of the Cell Group focusing in the eastern portion of the Cell Group.
2 V 3959 23 SE
2 W 4060 26 NE Conservation within this Cell Group will contribute to assembly of Proposed Core 1. Conservation within this Cell Group will focus on riparian scrub, woodland and forest habitat associated with Alberhill Creek and adjacent coastal sage scrub and grassland habitat. Areas conserved within this Cell Group will be connected to coastal sage scrub, riparian scrub, woodland and forest habitat proposed for conservation in Cell #3964 to the north, to coastal sage scrub habitat proposed for conservation in Cell #4057 to the west, and to grassland, riparian scrub, woodland and forest habitat proposed for conservation in Cell #4166 to the south. Conservation within this Cell Group will range from 80%-90% of the Cell Group focusing in the northwestern portion of the Cell Group.
2 W 4067 25 NW
2 W 4070 25 NE
2   3853 23 NW Conservation within this Cell will contribute to assembly of Proposed Core 1. Conservation within this Cell will focus on riparian scrub, woodland and forest habitat associated with Alberhill Creek and recovery of adjacent coastal sage scrub habitat. Areas conserved within this Cell will be connected to coastal sage scrub, riparian scrub, woodland and forest habitat proposed for conservation in Cell Groups J to the north and O to the east. Conservation within this Cell will range from 80%-90% of the Cell focusing in the northeastern portion of the Cell.
2   3854 22 NW Conservation within this Cell will contribute to assembly of Proposed Core 1. Conservation within this Cell will focus on recovery of coastal sage scrub habitat. Areas conserved within this Cell will be connected to coastal sage scrub habitat proposed for conservation in Cell Group J to the north and in Cell #3855 to the east. Conservation within this Cell will range from 10%-20% of the Cell focusing in the northeastern portion of the Cell.
2   3855 22 NE Conservation within this Cell will contribute to assembly of Proposed Core 1. Conservation within this Cell will focus on recovery of coastal sage scrub habitat. Areas conserved within this Cell will be connected to coastal sage scrub, riparian scrub, woodland and forest habitat proposed for conservation in Cell Group J to the north. Conservation within this Cell will range from 25%-35% of the Cell focusing in the northern portion of the Cell.
2   3964 24 SW Conservation within this Cell will contribute to assembly of Proposed Core 1. Conservation within this Cell will focus on riparian scrub, woodland and forest habitat associated with Alberhill Creek and adjacent coastal sage scrub and chaparral habitat. Areas conserved within this Cell will be connected to coastal sage scrub, riparian scrub, woodland and forest habitat proposed for conservation in Cell Groups V to the west and W to the south and to chaparral and coastal sage scrub habitat proposed for conservation in Cell Group O to the north. Conservation within this Cell will range from 45%-55% of the Cell focusing in the western half of the Cell.
2   3966 24 SE Conservation within this Cell will contribute to assembly of Proposed Core 1. Conservation within this Cell will focus on coastal sage scrub and chaparral habitat. Areas conserved within this Cell will be connected to coastal sage scrub and chaparral habitat proposed for conservation in Cell Group P to the north and to upland habitat proposed for conservation in Cell #3970 to the east. Conservation within this Cell will range from 5%-15% of the Cell focusing in the northeastern portion of the Cell.
2   3970 19 SW Conservation within this Cell will contribute to assembly of Proposed Core 1. Conservation within this Cell will focus on coastal sage scrub habitat. Areas conserved within this Cell will be connected to chaparral habitat proposed for conservation in Cell Group P to the north and to coastal sage scrub habitat proposed for conservation in Cell #3966 to the west. Conservation within this Cell will range from 5%-15% of the Cell focusing in the northern portion of the Cell.
2   4054 28 NE Conservation within this Cell will contribute to assembly of Proposed Linkage 1. Conservation within this Cell will focus on chaparral and Riversidean alluvial fan sage scrub habitat. Areas conserved within this Cell will be connected to chaparral habitat proposed for conservation in Cell Groups S to the north and T to the east and to chaparral and Riversidean alluvial fan sage scrub habitat proposed for conservation in Cell #4154 to the south. Conservation within this Cell will range from 70%-80% of the Cell focusing in the northeastern portion of the Cell.
2   4057 26 NW Conservation within this Cell will contribute to assembly of Proposed Core 1. Conservation within this Cell will focus on coastal sage scrub, chaparral and grassland habitat. Areas conserved within this Cell will be connected to chaparral habitat proposed for conservation in Cell Group U to the west, to chaparral and grassland habitat proposed for conservation in Cell #4157 to the south and to coastal sage scrub habitat proposed for conservation in Cell Group W to the east. Conservation within this Cell will range from 80%-90% of the Cell focusing in the southeastern portion of the Cell.
2   4152 29 SE Conservation within this Cell will contribute to assembly of Proposed Linkage 1. Conservation within this Cell will focus on chaparral and Riversidean alluvial fan sage scrub habitat. Areas conserved within this Cell will be connected to chaparral and Riversidean alluvial fan sage scrub habitat proposed for conservation in Cell #4153 to the east. Conservation within this Cell will range from 15%-25% of the Cell focusing in the southeastern portion of the Cell.
2   4153 28 SW Conservation within this Cell will contribute to assembly of Proposed Linkage 1. Conservation within this Cell will focus on chaparral and Riversidean alluvial fan sage scrub habitat. Areas conserved within this Cell will be connected to chaparral and Riversidean alluvial fan sage scrub habitat proposed for conservation in Cell #4152 to the west, #4250 to the south and #4154 to the east. Conservation within this Cell will range from 60%-70% of the Cell focusing in the southern portion of the Cell.
2   4154 28 SE Conservation within this Cell will contribute to assembly of Proposed Linkage 1. Conservation within this Cell will focus on chaparral, Riversidean alluvial fan sage scrub and grassland habitat. Areas conserved within this Cell will be connected to chaparral and Riversidean alluvial fan sage scrub habitat proposed for conservation in Cell #4153 to the west, #4251 to the south and #4054 to the north. Conservation within this Cell will range from 75%-85% of the Cell focusing in the southeastern portion of the Cell.
2   4155 27 SW Conservation within this Cell will contribute to assembly of Proposed Core 1. Conservation within this Cell will focus on coastal sage scrub and chaparral habitat. Areas conserved within this Cell will be connected to coastal sage scrub habitat proposed for conservation in Cell Group T to the north and in Cell #4156 to the east. Conservation within this Cell will range from 20%-30% of the Cell focusing in the northeastern portion of the Cell.
2   4156 27 SE Conservation within this Cell will contribute to assembly of Proposed Core 1. Conservation within this Cell will focus on coastal sage scrub and chaparral habitat. Areas conserved within this Cell will be connected to coastal sage scrub habitat proposed for conservation in Cell #4155 to the west and to coastal sage scrub and chaparral habitat proposed for conservation in Cell Group U to the north and in Cell #4157 to the east. Conservation within this Cell will range from 65%-75% of the Cell focusing in the northeastern portion of the Cell.
2   4157 26 SW Conservation within this Cell will contribute to assembly of Proposed Core 1. Conservation within this Cell will focus on coastal sage scrub, chaparral and grassland habitat. Areas conserved within this Cell will be connected to coastal sage scrub and chaparral habitat proposed for conservation in Cell #4156 to the west and to chaparral and grassland habitat proposed for conservation in Cell #4057 to the north. Conservation within this Cell will range from 45%-55% of the Cell focusing in the western half of the Cell.
2   4250 33 NW Conservation within this Cell will contribute to assembly of Proposed Linkage 1. Conservation within this Cell will focus on chaparral and Riversidean alluvial fan sage scrub habitat. Areas conserved within this Cell will be connected to chaparral habitat proposed for conservation in Cell #4153 to the north and #4251 to the east. Conservation within this Cell will range from 45%-55% of the Cell focusing in the northern half of the Cell.
2   4251 33 NE Conservation within this Cell will contribute to assembly of Proposed Linkage 1. Conservation within this Cell will focus on chaparral, coastal sage scrub and Riversidean alluvial fan sage scrub habitat. Areas conserved within this Cell will be connected to chaparral habitat proposed for conservation in Cell #4154 to the north and #4250 to the west. Conservation within this Cell will range from 15%-25% of the Cell focusing in the northwestern portion of the Cell.
SUBUNIT 3 - Elsinore
3   4166 25 SW Conservation within this Cell will contribute to assembly of Proposed Linkage 2. Conservation within this Cell will focus on meadow, marsh, riparian scrub, woodland and forest habitat along Alberhill Creek and adjacent grassland habitat. Areas conserved within this Cell will be connected to riparian scrub, woodland, forest and grassland habitat proposed for conservation in Cell Group W to the north and to meadow, marsh and grassland habitat proposed for conservation in Cell #4169 to the east. Conservation within this Cell will range from 15%-25% of the Cell focusing in the northeastern portion of the Cell.
3   4169 25 SE Conservation within this Cell will contribute to assembly of Proposed Linkage 2. Conservation within this Cell will focus on meadow and marsh habitat along Alberhill Creek and adjacent grassland habitat. Areas conserved within this Cell will be connected to meadow and marsh habitat proposed for conservation in Cell #4166 to the west and to meadow, marsh and grassland habitat proposed for conservation in Cell #4266 to the south. Conservation within this Cell will range from 10%-20% of the Cell focusing in the southwestern portion of the Cell.
3   4266 36 NE Conservation within this Cell will contribute to assembly of Proposed Linkage 2. Conservation within this Cell will focus on meadow, marsh, riparian scrub, woodland and forest habitat along Alberhill Creek and adjacent grassland habitat. Areas conserved within this Cell will be connected to meadow, marsh and grassland habitat proposed for conservation in Cell #4169 to the north. Conservation within this Cell will range from 30%-40% of the Cell focusing in the western portion of the Cell.
3   4646 09 NW Conservation within this Cell will contribute to assembly of Proposed Linkage 8. Conservation within this Cell will focus on riparian scrub, woodland and forest habitat along the San Jacinto River. Areas conserved within this Cell will be connected to riparian scrub, woodland and forest habitat proposed for conservation in Cell #4743 to the south and #4647 to the east. Conservation within this Cell will be approximately 5% of the Cell focusing in the southeastern portion of the Cell.
3   4647 09 NE Conservation within this Cell will contribute to assembly of Proposed Linkage 8. Conservation within this Cell will focus on riparian scrub, woodland and forest habitat along the San Jacinto River and adjacent coastal sage scrub habitat and on additional chaparral and coastal sage scrub habitat within the Cell. Areas conserved within this Cell will be connected to riparian scrub, woodland and forest habitat proposed for conservation in Cell #4646 to the west and #4648 to the east and to chaparral and coastal sage scrub habitat proposed for conservation in Cell Group C' to the north. Conservation within this Cell will range from 10%-20% of the Cell focusing in the southern and northeastern portions of the Cell.
3   4740 08 SW Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 3. Conservation within this Cell will focus on grassland habitat associated with the San Jacinto River. Areas conserved within this Cell will be connected to grassland habitat proposed for conservation in Cell #4759 to the west, #4844 to the south and #4742 to the east. Conservation within this Cell will range from 70%-80% of the Cell focusing in the southeastern portion of the Cell.
3   4742 08 SE Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 3. Conservation within this Cell will focus on grassland habitat associated with the San Jacinto River. Areas conserved within this Cell will be connected to grassland habitat proposed for conservation in Cell #4740 to the west, #4845 to the south and #4743 to the east. Conservation within this Cell will range from 30%-40% of the Cell focusing in the southern portion of the Cell.
3   4743 09 SW Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 3 and Proposed Linkage 8. Conservation within this Cell will focus on riparian scrub, woodland, forest and grassland habitat associated with the San Jacinto River. Areas conserved within this Cell will be connected to riparian scrub, woodland and forest habitat proposed for conservation in Cell #4646 to the north and to grassland habitat proposed for conservation in Cell #4742 to the west and #4846 to the south. Conservation within this Cell will range from 45%-55% of the Cell focusing in the southern and northeastern portions of the Cell.
3   4759 07 SE Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 3. Conservation within this Cell will focus on grassland habitat associated with the San Jacinto River. Areas conserved within this Cell will be connected to grassland habitat proposed for conservation in Cell #4740 to the east and #4843 to the south. Conservation within this Cell will range from 15%-25% of the Cell focusing in the eastern portion of the Cell.
3   4843 18 NE Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 3. Conservation within this Cell will focus on grassland habitat associated with the San Jacinto River. Areas conserved within this Cell will be connected to grassland habitat proposed for conservation in Cell #4759 to the north and #4844 to the east. Conservation within this Cell will be approximately 5% of the Cell focusing in the northeastern portion of the Cell.
3   4844 17 NW Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 3. Conservation within this Cell will focus on grassland habitat. Areas conserved within this Cell will be connected to grassland habitat proposed for conservation in Cell #4843 to the west, #4740 to the north and #4940 to the south. Conservation within this Cell will range from 35%-45% of the Cell focusing in the western portion of the Cell.
3   4845 17 NE Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 3. Conservation within this Cell will focus on grassland habitat associated with the San Jacinto River. Areas conserved within this Cell will be connected to grassland habitat proposed for conservation in Cell #4742 to the north, #4846 to the east and #4939 to the south. Conservation within this Cell will range from 20%-30% of the Cell focusing in the northern and southeastern portions of the Cell.
3   4846 16 NW Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 3. Conservation within this Cell will focus on grassland habitat associated with the San Jacinto River. Areas conserved within this Cell will be connected to grassland habitat proposed for conservation in Cell #4845 to the west, #4743 to the north and #4937 to the south. Conservation within this Cell will range from 65%-75% of the Cell focusing in the western portion of the Cell.
3   4937 16 SW Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 3. Conservation within this Cell will focus on grassland habitat. Areas conserved within this Cell will be connected to grassland habitat proposed for conservation in Cell #4939 to the west and #4846 to the north. Conservation within this Cell will range from 30%-40% of the Cell focusing in the northwestern portion of the Cell.
3   4939 17 SE Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 3. Conservation within this Cell will focus on grassland habitat. Areas conserved within this Cell will be connected to grassland habitat proposed for conservation in Cell #4845 to the north, #4937 to the east and 5033 to the south. Conservation within this Cell will range from 70%-80% of the Cell focusing in the northeastern portion of the Cell.
3   4940 17 SW Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 3. Conservation within this Cell will focus on grassland habitat. Areas conserved within this Cell will be connected to grassland habitat proposed for conservation in Cell #4844 to the north. Conservation within this Cell will range from 15%-25% of the Cell focusing in the northwestern portion of the Cell.
3   5033 20 NE Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 3. Conservation within this Cell will focus on grassland habitat. Areas conserved within this Cell will be connected to grassland habitat proposed for conservation in Cell #4939 to the north, #5036 to the west and #5140 to the south. Conservation within this Cell will range from 5%-15% of the Cell focusing in the southern and northeastern portions of the Cell.
3   5036 20 NW Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 3. Conservation within this Cell will focus on grassland habitat. Areas conserved within this Cell will be connected to grassland habitat proposed for conservation in Cell #5038 to the west and #5033 to the east. Conservation within this Cell will range from 40%-50% of the Cell focusing in the southwestern portion of the Cell.
3   5038 19 NE Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 3. Conservation within this Cell will focus on grassland habitat. Areas conserved within this Cell will be connected to grassland habitat proposed for conservation in Cell #5036 to the east. Conservation within this Cell will range from 35%-45% of the Cell focusing in the eastern central portion of the Cell.
3   5131 21 SE Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 3. Conservation within this Cell will focus on grassland habitat. Areas conserved within this Cell will be connected to grassland habitat proposed for conservation in Cell #5137 to the west. Conservation within this Cell will range from 30%-40% of the Cell focusing in the southwestern portion of the Cell.
3   5137 21 SW Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 3. Conservation within this Cell will focus on grassland habitat. Areas conserved within this Cell will be connected to grassland habitat proposed for conservation in Cell #5140 to the west, #5240 to the south and #5131 to the east. Conservation within this Cell will range from 65%-75% of the Cell focusing in the southern portion of the Cell.
3   5140 20 SE Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 3. Conservation within this Cell will focus on grassland and chaparral habitat. Areas conserved within this Cell will be connected to grassland habitat proposed for conservation in Cell #5033 to the north and #5137 to the east. Conservation within this Cell will range from 40%-50% of the Cell focusing in the northeastern portion of the Cell.
3   5240 28 NW Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 3. Conservation within this Cell will focus on grassland and coastal sage scrub habitat. Areas conserved within this Cell will be connected to grassland habitat proposed for conservation in Cell #5137 to the north and to coastal sage scrub habitat proposed for conservation in Cell #5342 to the south. Conservation within this Cell will range from 45%-55% of the Cell focusing in the northern and central portions of the Cell.
3   5342 28 SW Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 3. Conservation within this Cell will focus on coastal sage scrub habitat. Areas conserved within this Cell will be connected to coastal sage scrub habitat proposed for conservation in Cell #5240 to the north. Conservation within this Cell will range from 5%-15% of the Cell focusing in the northern central portion of the Cell.
SUBUNIT 4 - Sedco Hills
4 D' 4553 03 SE Conservation within this Cell Group will contribute to assembly of Proposed Linkage 8. Conservation within this Cell Group will focus on riparian scrub, woodland and forest habitat associated with the San Jacinto River and adjacent chaparral, coastal sage scrub and grassland habitat. Areas conserved within this Cell Group will be connected to coastal sage scrub habitat proposed for conservation in Cell #4550 to the west, to coastal sage scrub, grassland, riparian scrub, woodland and forest habitat proposed for conservation in Cell #4648 also to the west, to chaparral and coastal sage scrub habitat proposed for conservation in Cell Group F' to the south and to chaparral, coastal sage scrub, riparian scrub, woodland and forest habitat proposed for conservation in Cell Group E' to the east. Conservation within this Cell Group will range from 50%-60% of the Cell Group focusing in the southern portion of the Cell Group.
4 D' 4649 10 NE
4 E' 4556 02 SW Conservation within this Cell Group will contribute to assembly of Proposed Linkage 8. Conservation within this Cell Group will focus on riparian scrub, woodland and forest habitat associated with the San Jacinto River and adjacent chaparral, coastal sage scrub and grassland habitat. Areas conserved within this Cell Group will be connected to chaparral, coastal sage scrub, riparian scrub, woodland and forest habitat proposed for conservation in Cell Group D' to the west and in Cell #4559 to the east, to chaparral and coastal sage scrub habitat proposed for conservation in Cell Group G' to the south, and to chaparral, coastal sage scrub, and grassland habitat proposed for conservation in Cell Group F' also to the west and in Cell #4656 also to the east. Conservation within this Cell Group will range from 60%-70% of the Cell Group focusing in the southern and eastern portions of the Cell Group.
4 E' 4651 11 NW
4 E' 4749 11 SW
4 F' 4747 10 SE Conservation within this Cell Group will contribute to assembly of Proposed Linkage 8. Conservation within this Cell Group will focus on chaparral, coastal sage scrub and grassland habitat. Areas conserved within this Cell Group will be connected to chaparral and coastal sage scrub habitat proposed for conservation in Cell Group D' to the north, in Cell #4745 and #4838 both to the west, and in Cell Groups E' and G' both to the east. Conservation within this Cell Group will range from 70%-80% of the Cell Group focusing in the northern portion of the Cell Group.
4 F' 4847 15 NE
4 G' 4848 14 NW Conservation within this Cell Group will contribute to assembly of Proposed Linkage 8. Conservation within this Cell Group will focus on chaparral and coastal sage scrub habitat. Areas conserved within this Cell Group will be connected to chaparral and coastal sage scrub habitat proposed for conservation in Cell Groups F' to the west, E' to the north and H' to the east. Conservation within this Cell Group will range from 65%-75% of the Cell Group focusing in the northern portion of the Cell Group.
4 G' 4945 14 SW
4 G' 5044 23 NW
4 H' 4849 14 NE Conservation within this Cell Group will contribute to assembly of Proposed Linkage 8. Conservation within this Cell Group will focus on chaparral and coastal sage scrub habitat. Areas conserved within this Cell Group will be connected to chaparral and coastal sage scrub habitat proposed for conservation in Cell Groups G' to the west and I' to the east. Conservation within this Cell Group will range from 60%-70% of the Cell Group focusing in the northern portion of the Cell Group.
4 H' 4946 14 SE
4 H' 5045 23 NE
4 I' 4951 13 SW Conservation within this Cell Group will contribute to assembly of Proposed Linkage 8. Conservation within this Cell Group will focus on chaparral and coastal sage scrub habitat. Areas conserved within this Cell Group will be connected to chaparral and coastal sage scrub habitat proposed for conservation in Cell Group H' to the west and to chaparral habitat proposed for conservation in Cell #5149 to the south and in Cell Group J' to the east. Conservation within this Cell Group will range from 50%-60% of the Cell Group focusing in the southern portion of the Cell Group.
4 I' 5049 24 NW
4 J' 5046 24 NE Conservation within this Cell Group will contribute to assembly of Proposed Linkage 8. Conservation within this Cell Group will focus on chaparral, coastal sage scrub, grassland, woodland and forest habitat. Areas conserved within this Cell Group will be connected to chaparral habitat proposed for conservation in Cell Group I' and in Cell #5149 both to the west and to chaparral, woodland and forest habitat proposed for conservation in Cell Group K' to the east. Conservation within this Cell Group will range from 50%-60% of the Cell Group focusing in the northern portion of the Cell Group.
4 J' 5145 24 SE
4 J' 5248 25 NE
4 K' 5245 30 NE Conservation within this Cell Group will contribute to assembly of Proposed Linkage 8. Conservation within this Cell Group will focus on chaparral, coastal sage scrub, grassland, woodland and forest habitat. Areas conserved within this Cell Group will be connected to chaparral, coastal sage scrub, woodland and forest habitat proposed for conservation in Cell Group J' to the west and to coastal sage scrub habitat proposed for conservation in Cell Group L' to the south and in Cell #5352 to the east. Conservation within this Cell Group will range from 40%-50% of the Cell Group focusing in the southwestern portion of the Cell Group.
4 K' 5247 30 NW
4 K' 5350 30 SW
4 K' 5351 30 SE
4 L' 5455 31 NE Conservation within this Cell Group will contribute to assembly of Proposed Linkage 8. Conservation within this Cell Group will focus on coastal sage scrub, grassland, riparian scrub, woodland and forest habitat. Areas conserved within this Cell Group will be connected to coastal sage scrub and grassland habitat proposed for conservation in Cell #5559 to the east, to coastal sage scrub habitat proposed for conservation in Cell #5456 also to the east and to existing Public/Quasi-Public lands in Cell Group K' to the north. Conservation within this Cell Group will range from 60%-70% of the Cell Group focusing in the northeastern portion of the Cell Group.
4 L' 5558 31 SE
4   4550 03 SW Conservation within this Cell will contribute to assembly of Proposed Linkage 8. Conservation within this Cell will focus on coastal sage scrub habitat. Areas conserved within this Cell will be connected to coastal sage scrub habitat proposed for conservation in Cell Group C' to the west, in Cell #4648 to the south and in Cell Group D' to the east. Conservation within this Cell will range from 20%-30% of the Cell focusing in the southern portion of the Cell.
4   4559 02 SE Conservation within this Cell will contribute to assembly of Proposed Linkage 8. Conservation within this Cell will focus on riparian scrub, woodland and forest habitat associated with Cottonwood Canyon and adjacent chaparral and coastal sage scrub habitat. Areas conserved within this Cell will be connected to chaparral, coastal sage scrub, riparian scrub, woodland and forest habitat proposed for conservation in Cell Group E' to the west and to chaparral and coastal sage scrub habitat proposed for conservation in Cell #4656 to the south. Conservation within this Cell will range from 20%-30% of the Cell focusing in the southwestern portion of the Cell.
4   4648 10 NW Conservation within this Cell will contribute to assembly of Proposed Linkage 8. Conservation within this Cell will focus on riparian scrub, woodland and forest habitat associated with the San Jacinto River and adjacent grassland, coastal sage scrub and chaparral habitat. Areas conserved within this Cell will be connected to coastal sage scrub habitat proposed for conservation in Cell #4550 to the north, to riparian scrub, woodland and forest habitat proposed for conservation in Cell #4647 to the west, and to coastal sage scrub, riparian scrub, woodland and forest habitat proposed for conservation in Cell #4745 to the south and in Cell Group D' to the east. Conservation within this Cell will range from 50%-60% of the Cell focusing in the eastern portion of the Cell.
4   4656 11 NE Conservation within this Cell will contribute to assembly of Proposed Linkage 8. Conservation within this Cell will focus on chaparral, coastal sage scrub and grassland habitat. Areas conserved within this Cell will be connected to chaparral and coastal sage scrub habitat proposed for conservation in Cell #4559 to the north and to chaparral, coastal sage scrub and grassland habitat proposed for conservation in Cell Group E' to the west. Conservation within this Cell will range from 15%-25% of the Cell focusing in the northwestern portion of the Cell.
4   4745 10 SW Conservation within this Cell will contribute to assembly of Proposed Linkage 8. Conservation within this Cell will focus on riparian scrub, woodland and forest habitat associated with the San Jacinto River and adjacent coastal sage scrub and chaparral habitat. Areas conserved within this Cell will be connected to coastal sage scrub, riparian scrub, woodland and forest habitat proposed for conservation in Cell #4648 to the north and to coastal sage scrub and chaparral habitat proposed for conservation in Cell #4838 to the south and in Cell Group F' to the east. Conservation within this Cell will range from 70%-80% of the Cell focusing in the northern and eastern portions of the Cell.
4   4838 15 NW Conservation within this Cell will contribute to assembly of Proposed Linkage 8. Conservation within this Cell will focus on chaparral and coastal sage scrub habitat. Areas conserved within this Cell will be connected to chaparral and coastal sage scrub habitat proposed for conservation in Cell #4745 to the north and in Cell Group F' to the east. Conservation within this Cell will range from 15%-25% of the Cell focusing in the northeastern portion of the Cell.
4   5149 24 SW Conservation within this Cell will contribute to assembly of Proposed Linkage 8. Conservation within this Cell will focus on chaparral, woodland and forest habitat. Areas conserved within this Cell will be connected to chaparral habitat proposed for conservation in Cell Groups I' to the north and J' to the east. Conservation within this Cell will range from 70%-80% of the Cell focusing in the northern and eastern portions of the Cell.
4   5352 29 SW Conservation within this Cell will contribute to assembly of Proposed Linkage 8. Conservation within this Cell will focus on coastal sage scrub, riparian scrub, woodland and forest habitat. Areas conserved within this Cell will be connected to coastal sage scrub habitat proposed for conservation in Cell #5354 to the east and to existing Public/Quasi-Public lands in Cell Group K' to the west and in Cell #5456 to the south. Conservation within this Cell will range from 45%-55% of the Cell focusing in the southern portion of the Cell.
4   5354 29 SE Conservation within this Cell will contribute to assembly of Proposed Linkage 8. Conservation within this Cell will focus on coastal sage scrub, chaparral, riparian scrub, woodland and forest habitat. Areas conserved within this Cell will be connected to coastal sage scrub, riparian scrub, woodland and forest habitat proposed for conservation in Cell #5352 to the west, to existing Public/Quasi-Public lands in Cell #5457 to the south and to chaparral, coastal sage scrub, woodland and forest habitat proposed for conservation in Cell Group C in the Sun City/Menifee Area Plan to the east. Conservation within this Cell will range from 40%-50% of the Cell focusing in the southern portion of the Cell.
4   5456 32 NW Conservation within this Cell will contribute to assembly of Proposed Linkage 8. Conservation within this Cell will focus on coastal sage scrub habitat. Areas conserved within this Cell will be connected to coastal sage scrub habitat proposed for conservation in Cell Group L' to the west and in Cell #5457 to the east and to grassland habitat proposed for conservation in Cell #5559 to the south. Conservation within this Cell will range from 45%-55% of the Cell focusing in the southern portion of the Cell.
4   5457 32 NE Conservation within this Cell will contribute to assembly of Proposed Linkage 8. Conservation within this Cell will focus on coastal sage scrub, riparian scrub, woodland and forest habitat. Areas conserved within this Cell will be connected to coastal sage scrub habitat proposed for conservation in Cell #5456 to the west. Conservation within this Cell will range from 20%-30% of the Cell focusing in the southwestern portion of the Cell.
4   5559 32 SW Conservation within this Cell will contribute to assembly of Proposed Linkage 8. Conservation within this Cell will focus on coastal sage scrub and grassland habitat. Areas conserved within this Cell will be connected to coastal sage scrub habitat proposed for conservation in Cell #5456 to the north and to grassland, coastal sage scrub, riparian scrub, woodland and forest habitat proposed for conservation in Cell Group L' to the west. Conservation within this Cell will be approximately 5% of the Cell focusing in the northwestern portion of the Cell.
SUBUNIT 5 - Ramsgate
5 A' 4365 33 SE Conservation within this Cell Group will contribute to assembly of Proposed Core 1. Conservation within this Cell Group will focus on chaparral and coastal sage scrub habitat. Areas conserved within this Cell Group will be connected to coastal sage scrub habitat proposed for conservation in Cell Group Z and in Cell #4272 both to the north and to chaparral and coastal sage scrub habitat proposed for conservation in Cell Group B' to the south. Conservation within this Cell Group will range from 80%-90% of the Cell Group focusing in the northern and western portions of the Cell Group.
5 A' 4367 33 SW
5 B' 4456 04 NE Conservation within this Cell Group will contribute to assembly of Proposed Linkage 8. Conservation within this Cell Group will focus on chaparral, coastal sage scrub and grassland habitat. Areas conserved within this Cell Group will be connected to chaparral and coastal sage scrub habitat proposed for conservation in Cell Groups A' to the north and C' to the south. Conservation within this Cell Group will range from 70%-80% of the Cell Group focusing in the eastern portion of the Cell Group.
5 B' 4459 04 NW
5 C' 4548 04 SW Conservation within this Cell Group will contribute to assembly of Proposed Linkage 8. Conservation within this Cell Group will focus on chaparral, coastal sage scrub and grassland habitat. Areas conserved within this Cell Group will be connected to chaparral and coastal sage scrub habitat proposed for conservation in Cell Group B' to the north and in Cell #4647 to the south and to upland habitat proposed for conservation in Cell #4550 to the east. Conservation within this Cell Group will range from 70%-80% of the Cell Group focusing in the eastern portion of the Cell Group.
5 C' 4549 04 SE
5 X 4076 29 NW Conservation within this Cell Group will contribute to assembly of Proposed Core 1. Conservation within this Cell Group will focus on chaparral, coastal sage scrub, grassland, riparian scrub, woodland and forest habitat. Areas conserved within this Cell Group will be connected to chaparral and coastal sage scrub habitat proposed for conservation in Cell Group M to the north and to coastal sage scrub, riparian scrub, woodland and forest habitat proposed for conservation in Cell Group Z to the south and in Cell #4178 to the east. Conservation within this Cell Group will range from 30%-40% of the Cell Group focusing in the northeastern portion of the Cell Group.
5 X 4079 29 NE
5 X 4180 29 SE
5 Y 4171 27 SE Conservation within this Cell Group will contribute to assembly of Proposed Linkage 7. Conservation within this Cell Group will focus on coastal sage scrub and grassland habitat. Areas conserved within this Cell Group will be connected to coastal sage scrub and grassland habitat proposed for conservation in Cell #4174 and #4270 both to the west and in Cell #4071 to the north. Conservation within this Cell Group will range from 55%-65% of the Cell Group focusing in the northern portion of the Cell Group.
5 Y 4268 34 NE
5 Z 4273 33 NW Conservation within this Cell Group will contribute to assembly of Proposed Core 1. Conservation within this Cell Group will focus on riparian scrub, woodland and forest habitat and adjacent coastal sage scrub and grassland habitat. Areas conserved within this Cell Group will be connected to coastal sage scrub habitat proposed for conservation in Cell #4178 to the north and in Cell #4272 to the east, to coastal sage scrub, riparian scrub, woodland and forest habitat proposed for conservation in Cell Group X also to the north, and to coastal sage scrub and chaparral habitat proposed for conservation in Cell Group A' to the south. Conservation within this Cell Group will range from 55%-65% of the Cell Group focusing in the eastern portion of the Cell Group.
5 Z 4276 32 NE
5   3851 23 NE Conservation within this Cell will contribute to assembly of Proposed Linkage 7. Conservation within this Cell will focus on riparian scrub, woodland and forest habitat associated with the San Jacinto River and adjacent coastal sage scrub, chaparral and grassland habitat. Areas conserved within this Cell will be connected to chaparral, coastal sage scrub, riparian scrub, woodland and forest habitat proposed for conservation in Cell #3955 to the south. Conservation within this Cell will be approximately 90% of the Cell focusing in the eastern portion of the Cell.
5   3955 23 SE Conservation within this Cell will contribute to assembly of Proposed Linkage 7. Conservation within this Cell will focus on riparian scrub, woodland, forest and water habitat associated with the San Jacinto River and adjacent coastal sage scrub and chaparral habitat. Areas conserved within this Cell will be connected to chaparral, coastal sage scrub, grassland, riparian scrub, woodland and forest habitat proposed for conservation in Cell #3851 to the north. Conservation within this Cell will be approximately 90% of the Cell focusing in the eastern portion of the Cell.
5   3974 21 SE Conservation within this Cell will contribute to assembly of Proposed Core 1. Conservation within this Cell will focus on coastal sage scrub and grassland habitat. Areas conserved within this Cell will be connected to coastal sage scrub and grassland habitat proposed for conservation in Cell #4078 to the south. Conservation within this Cell will be approximately 5% of the Cell focusing in the southern central portion of the Cell.
5   4071 27 NE Conservation within this Cell will contribute to assembly of Proposed Linkage 7. Conservation within this Cell will focus on coastal sage scrub and grassland habitat. Areas conserved within this Cell will be connected to coastal sage scrub and grassland habitat proposed for conservation in Cell Group Y to the south. Conservation within this Cell will be range from 20%-30% of the Cell focusing in the southeastern portion of the Cell.
5   4078 28 NE Conservation within this Cell will contribute to assembly of Proposed Core 1. Conservation within this Cell will focus on riparian scrub, woodland, forest, coastal sage scrub and grassland habitat. Areas conserved within this Cell will be connected to coastal sage scrub and grassland habitat proposed for conservation in Cell #3974 to the north and to grassland habitat proposed for conservation in Cell #4176 to the south. Conservation within this Cell will range from 25%-35% of the Cell focusing in the central portion of the Cell.
5   4174 27 SW Conservation within this Cell will contribute to assembly of Proposed Linkage 7. Conservation within this Cell will focus on coastal sage scrub and grassland habitat. Areas conserved within this Cell will be connected to coastal sage scrub habitat proposed for conservation in Cell Group Y to the east and to grassland and coastal sage scrub habitat proposed for conservation in Cell #4270 to the south. Conservation within this Cell will be range from 55%-65% of the Cell focusing in the eastern portion of the Cell.
5   4176 28 SE Conservation within this Cell will contribute to assembly of Proposed Core 1. Conservation within this Cell will focus on coastal sage scrub and grassland habitat. Areas conserved within this Cell will be connected to coastal sage scrub, grassland, chaparral, riparian scrub, woodland and forest habitat proposed for conservation in Cell #4178 to the west, to grassland habitat proposed for conservation in Cell #4078 to the north and to coastal sage scrub habitat proposed for conservation in Cell #4272 to the south. Conservation within this Cell will be approximately 5% of the Cell focusing in the northwestern and southwestern portions of the Cell.
5   4178 28 SW Conservation within this Cell will contribute to assembly of Proposed Core 1. Conservation within this Cell will focus on riparian scrub, woodland and forest habitat and adjacent coastal sage scrub, chaparral and grassland habitat. Areas conserved within this Cell will be connected to coastal sage scrub, riparian scrub, woodland and forest habitat proposed for conservation in Cell Group X to the west, to coastal sage scrub habitat proposed for conservation in Cell Group Z to the south, and to coastal sage scrub and grassland habitat proposed for conservation in Cell #4176 to the east. Conservation within this Cell will range from 75%-85% of the Cell focusing in the southwesetern and northeastern portions of the Cell.
5   4270 34 NW Conservation within this Cell will contribute to assembly of Proposed Linkage 7. Conservation within this Cell will focus on grassland and coastal sage scrub habitat. Areas conserved within this Cell will be connected to coastal sage scrub and grassland habitat proposed for conservation in Cell #4174 to the north and in Cell Group Y to the east and to existing Public/Quasi-Public lands in Cell #4272 to the west. Conservation within this Cell will be range from 55%-65% of the Cell focusing in the northwestern portion of the Cell.
5   4272 33 NE Conservation within this Cell will contribute to assembly of Proposed Core 1. Conservation within this Cell will focus on coastal sage scrub and grassland habitat. Areas conserved within this Cell will be connected to coastal sage scrub habitat proposed for conservation in Cell Groups Z to the west and A' to the south and in Cell #4176 to the north. Conservation within this Cell will range from 45%-55% of the Cell focusing in the western portion of the Cell.
SUBUNIT 6 - Steele Peak
6 B 3475 08 NE Conservation within this Cell Group will contribute to assembly of Proposed Core 1. Conservation within this Cell Group will focus on riparian scrub, woodland and forest habitat and adjacent chaparral and coastal sage scrub habitat. Areas conserved within this Cell Group will be connected to chaparral, coastal sage scrub, riparian scrub, woodland and forest habitat proposed for conservation in Cell Group G to the south and in Cell Group R in the Lake Mathews Area Plan to the north and to coastal sage scrub habitat proposed for conservation in Cell #3473 in the Mead Valley Area Plan to the east. Conservation within this Cell Group will range from 30%-40% of the Cell Group focusing in the eastern portion of the Cell Group.
6 B 3477 08 NW
6 G 3572 08 SE Conservation within this Cell Group will contribute to assembly of Proposed Core 1. Conservation within this Cell Group will focus on riparian scrub, woodland and forest habitat and adjacent coastal sage scrub and chaparral habitat. Areas conserved within this Cell Group will be connected to chaparral, coastal sage scrub, riparian scrub, woodland and forest habitat proposed for conservation in Cell Group B to the north and in Cell #3670 to the south and to coastal sage scrub habitat proposed for conservation in Cell Group J in the Mead Valley Area Plan to the east. Conservation within this Cell Group will range from 20%-30% of the Cell Group focusing in the eastern portion of the Cell Group.
6 G 3574 08 SW
6 M 3772 17 SE Conservation within this Cell Group will contribute to assembly of Proposed Core 1. Conservation within this Cell Group will focus on coastal sage scrub, chaparral and grassland habitat. Areas conserved within this Cell Group will be connected to chaparral and coastal sage scrub habitat proposed for conservation in Cell Group Q to the west, in Cell #3670 to the north and in Cell Group X to the south. Conservation within this Cell Group will range from 75%-85% of the Cell Group focusing in the southern portion of the Cell Group.
6 M 3773 17 SW
6 M 3875 20 NE
6 M 3971 20 SE
6 M 3977 20 SW
6   3667 16 NW Conservation within this Cell will contribute to assembly of Proposed Core 1 and Proposed Linkage 3. Conservation within this Cell will focus on riparian scrub, woodland and forest habitat and adjacent coastal sage scrub, chaparral and grassland habitat. Areas conserved within this Cell will be connected to chaparral, coastal sage scrub, riparian scrub, woodland and forest habitat proposed for conservation in Cell #3670 to the west and to coastal sage scrub habitat proposed for conservation in Cell Group J in the Mead Valley Area Plan to the north. Conservation within this Cell will range from 75%-85% of the Cell focusing in the western and eastern central portions of the Cell.
6   3670 17 NE Conservation within this Cell will contribute to assembly of Proposed Core 1. Conservation within this Cell will focus on riparian scrub, woodland and forest habitat and adjacent coastal sage scrub and chaparral habitat. Areas conserved within this Cell will be connected to coastal sage scrub, riparian scrub, woodland and forest habitat proposed for conservation in Cell Group G to the north and in Cell #3667 to the east and to chaparral and coastal sage scrub habitat proposed for conservation in Cell Group M to the south. Conservation within this Cell will range from 65%-75% of the Cell focusing in the eastern portion of the Cell.






3.3.4 Harvest Valley/Winchester Area Plan

This section identifies target acreages, applicable Cores and Linkages, Area Plan Subunits and Criteria for the Harvest Valley/Winchester Area Plan. For a summary of the methodology and map resources used to develop target acreages and Criteria for the MSHCP Conservation Area, including this Area Plan, refer to Section 3.3.1.

Target Acreages

The target conservation acreage for the Harvest Valley/Winchester Area Plan is 6,320 - 6,495 acres; it is composed of approximately 5,890 acres of existing Public/Quasi-Public Lands and 430 - 605 acres of Additional Reserve Lands.

Applicable Cores and Linkages

The MSHCP Conservation Area comprises a variety of existing and proposed Cores, Linkages, Constrained Linkages and Noncontiguous Habitat Blocks (referred to as "Cores and Linkages"). For descriptions of these Cores and Linkages and more information about the biologically meaningful elements of the MSHCP Conservation Area within the Harvest Valley/Winchester Area Plan, see Section 3.2.3 and MSHCP Volume II, Section A.

Cores and Linkages within Harvest Valley/Winchester Area Plan

Descriptions of Planning Species, Biological Issues and Considerations and Criteria for each Area Plan Subunit within the Harvest Valley/Winchester Area Plan are presented later in this section. These descriptions, combined with those of the Cores and Linkages referred to above, provide information about biological issues to be considered in conjunction with Reserve Assembly within the Harvest Valley/Winchester Area Plan. As noted in Section 3.1, the Area Plan boundaries established as part of the Riverside County General Plan were selected to provide an organizational framework for the Area Plan Subunits and Criteria. While these boundaries are not biologically based, unlike the Cores and Linkages, they relate specifically to General Plan boundaries and the jurisdictional boundaries of incorporated Cities and were selected to facilitate implementation of the MSHCP in the context of existing institutional and planning boundaries.

Area Plan Subunits

The Harvest Valley/Winchester Area Plan is divided into two Subunits. For each Subunit, target conservation acreages are established along with a description of the Planning Species, Biological Issues and Considerations, and Criteria for each Subunit. For more information regarding specific conservation objectives for the Planning Species, see Section 9.0. Subunit boundaries are depicted on the Cells and Cell Groupings map displays (Figures 3-8 and 3-9). Table 3-5 presents the Criteria for the Harvest Valley/Winchester Area Plan.

Subunit 1: French Valley to Diamond Valley Lake Connection

Target acreage range for Additional Reserve Lands within Subunit: 130-145 acres

Cells within this Subunit: 4980

Planning Species:

Biological Issues and Considerations:

Subunit 2: Hemet Vernal Pools West

Target acreage range for Additional Reserve Lands within Subunit: 300-460 acres

Cells within this Subunit: 3683, 3684, 3791, 3887, 3891, 4007

Planning Species:

Biological Issues and Considerations:



TABLE 3-5
CRITERIA FOR VALLEY/WINCHESTER AREA PLAN

Sub
Unit
Cell Group Quadrat
Number
USGS Section Quarter
Section
Criteria
SUBUNIT 1 - French Valley to Diamond Valley Lake Connection
1   4980 15 SE Conservation within this Cell will focus on assembly of Proposed Extension of Existing Core 7. Conservation within this Cell will focus on coastal sage scrub, grassland, chaparral, and agricultural land. Areas conserved within this Cell will be connected to grasslands and coastal sage scrub proposed for conservation in Cell Group S in the Southwest Area Plan to the south. Conservation within this Cell will be approximately 90% focusing on the southeastern portion of the Cell.
SUBUNIT 2 - Hemet Vernal Pools West
2   3683 13 NW Conservation within this Cell will focus on assembly of Proposed Noncontiguous Habitat Block 7. Conservation within this Cell will focus on playas and vernal pools and a variety of upland habitat. Areas conserved within this Cell will be connected to wetlands proposed for conservation in Cell #3684 to the east and to uplands and wetlands proposed for conservation in Cell #3791 to the south. Conservation within this Cell will range from 65%-75% focusing on the eastern portion of the Cell.
2   3684 13 NE Conservation within this Cell will focus on assembly of Proposed Noncontiguous Habitat Block 7. Conservation within this Cell will focus on assembly of playas and vernal pools habitat. Areas conserved within this Cell will be connected to wetlands proposed for conservation in Cell #3683 to the west and in Cell Group D to the south and north in the San Jacinto Area Plan. Conservation within this Cell will range from 10%-20% focusing on the western portion of the Cell.
2   3791 13 SW Conservation within this Cell will focus on assembly of Proposed Noncontiguous Habitat Block 7. Conservation within this Cell will focus on playas and vernal pools and a variety of upland habitat. Areas conserved within this Cell will be connected to wetlands and uplands proposed for conservation in Cell #3683 to the north, and to wetlands proposed for conservation in Cell #3891 to the south and in Cell Group D to the east in the San Jacinto Area Plan. Conservation within this Cell will range from 55%-65% focusing on the central portion of the Cell.
2   3887 23 NE Conservation within this Cell will focus on assembly of Proposed Noncontiguous Habitat Block 7. Conservation within this Cell will focus on playas and vernal pools, coastal sage scrub, grassland, and chaparral. Areas conserved within this Cell will be connected to wetlands proposed for conservation to the east, northeast, and southeast in Cells #3891, #3791, and #4007. Conservation within this Cell will range from 45%-55% focusing on the eastern portion of the Cell.
2   3891 24 NW Conservation within this Cell will focus on assembly of Proposed Noncontiguous Habitat Block 7. Conservation within this Cell will focus on playas and vernal pool habitat. Areas conserved within this Cell will be connected to wetlands proposed for conservation in Cells #3791, #4007, and #3887 to the north, south, and west, and to wetlands proposed for conservation in Cell Group D to the east in the San Jacinto Area Plan. Conservation within this Cell will range from 45%-55% focusing on the western portion of the Cell.
2   4007 24 SW Conservation within this Cell will focus on assembly of Existing Constrained Linkage B. Conservation within this Cell will focus on playas and vernal pools. Areas conserved within this Cell will be connected to wetlands proposed for conservation to the north and northwest in Cells #3891 and #3887. Conservation within this Cell will range from 10%-20% focusing on the northwestern portion of the Cell.






3.3.5 Highgrove Area Plan

This section identifies target acreages, applicable Cores and Linkages, Area Plan Subunits and Criteria for the Highgrove Area Plan. For a summary of the methodology and map resources used to develop the target acreages and Criteria for the MSHCP Conservation Area, including this Area Plan, see Section 3.3.1.

Target Acreages

The target conservation acreage range for the Highgrove Area Plan is 1,450 - 1,780 acres; it is composed of approximately 1,105 acres of existing Public/Quasi-Public Lands and 345 - 675 acres of Additional Reserve Lands.

Applicable Cores and Linkages

The MSHCP Conservation Area comprises a variety of existing and proposed Cores, Linkages, Constrained Linkages and Noncontiguous Habitat Blocks (referred to here as "Cores and Linkages"). The Cores and Linkages listed below are within the Highgrove Area Plan. For descriptions of these Cores and Linkages and more information about the biologically meaningful elements of the MSHCP Conservation Area within the Highgrove Area Plan, see Section 3.2.3 and MSHCP Volume II, Section A.

Cores and Linkages within the Highgrove Area Plan

Descriptions of Planning Species, Biological Issues and Considerations and Criteria for each Area Plan Subunit within the Highgrove Area Plan are presented later in this section. These descriptions, combined with the descriptions of the Cores and Linkages referred to above, provide information about biological issues to be considered in conjunction with Reserve Assembly within the Highgrove Area Plan. As noted in Section 3.1, the Area Plan boundaries established as part of the Riverside County General Plan were selected to provide an organizational framework for the Area Plan Subunits and Criteria. While these boundaries are not biologically based, unlike the Cores and Linkages, they relate specifically to General Plan boundaries and the jurisdictional boundaries of incorporated Cities and were selected to facilitate implementation of the MSHCP in the context of existing institutional and planning boundaries.

Area Plan Subunits

The Highgrove Area Plan is divided into two Subunits. For each Subunit, target conservation acreages are established along with a description of the Planning Species, Biological Issues and Considerations, and Criteria for each Subunit. For more information regarding specific conservation objectives for the Planning Species, see Section 9.0. Subunit boundaries are depicted on the Cells and Cell Groupings map displays (Figures 3-10 and 3-11). Table 3-6 presents the Criteria for the Highgrove Area Plan.

Subunit 1: Sycamore Canyon/Box Springs - Central

Target acreage range for Additional Reserve Lands within Subunit: 95-180 acres

Cells within this Subunit: 545, 635 and 721

Planning Species:

Biological Issues and Considerations:

Subunit 2: Springbrook Wash - North

Target acreage range for Additional Reserve Lands within Subunit: 250-495 acres

Cells within this Subunit: 97, 101, 146, 147, 148, 196 and 197

Planning Species:

Biological Issues and Considerations:

TABLE 3-6
CRITERIA FOR HIGHGROVE AREA PLAN

Sub
Unit
Cell Group Quadrat
Number
USGS Section Quarter
Section
Criteria
SUBUNIT 1 - Sycamore Canyon/Box Springs Central
1   545 28 NW Conservation within this Cell will contribute to assembly of Proposed Constrained Linkage 7. Conservation within this Cell will focus on coastal sage scrub habitat. Areas conserved within this Cell will be connected to coastal sage scub habitat proposed for conservation to the south in Cell #635. Conservation within this Cell will range from 15%-25% of the southeastern portion of the Cell.
1   635 28 SW Conservation within this Cell will contribute to assembly of Proposed Constrained Linkage 7. Conservation within this Cell will focus on coastal sage scrub habitat. Areas conserved within this Cell will be connected to coastal sage scub habitat proposed for conservation to the south in Cell #721and to the north in Cell #545. Conservation within this Cell will range from 25%-35% of the central portion of the Cell.
1   721 33 NW Conservation within this Cell will contribute to assembly of Proposed Constrained Linkage 7. Conservation within this Cell will focus on coastal sage scrub habitat and riparian scrub, woodlands and forests. Areas conserved within this Cell will be connected to coastal sage scub habitat proposed for conservation to the north in Cell #635 and to the west in Cell #719 in the City of Riverside. Conservation within this Cell will range from 35%-45% of the northeastern and central portions of the Cell.
SUBUNIT 2 - Springbrook Wash North
2   97 09 NE Conservation within this Cell will contribute to assembly of Proposed Linkage 4. Conservation within this Cell will focus on assembly of coastal sage scrub habitat. Areas conserved within this Cell will be connected to coastal sage scrub habitat proposed for conservation to the east in Cell #101. Conservation within this Cell will range from 40%-50% of the northern portion of the Cell.
2   101 10 NW Conservation within this Cell will contribute to assembly of Proposed Linkage 4. Conservation within this Cell will focus on coastal sage scrub and annual grasslands habitats. Areas conserved within this Cell will be connected to coastal sage scrub habitat proposed for conservation to the west in Cell #97 and to the east in Cell Group F of the Reche Canyon/Badlands Area Plan, and to annual grasslands proposed for conservation to the south in Cell #148. Conservation within this Cell will range from 65%-75% of the northern and eastern portions of the Cell.
2   146 09 SW Conservation within this Cell will contribute to assembly of Existing Noncontiguous Habitat Block A. Conservation within this Cell will focus on coastal sage scrub habitat. Areas conserved within this Cell will be connected to coastal sage scrub habitat and annual grasslands proposed for conservation to the south in Cell #196 and to annual grasslands proposed for conservation to the east in Cell #147. Conservation within this Cell will range from 5%-15% of the southern portion of the Cell.
2   147 09 SE Conservation within this Cell will contribute to assembly of Existing Noncontiguous Habitat Block A. Conservation within this Cell will focus on annual grassland, woodlands and forests habitats. Areas conserved within this Cell will be connected to annual grasslands proposed for conservation to the west in Cell #146 and to annual grasslands, woodlands and forests proposed for conservation to the south in Cell #197. Conservation within this Cell will be approximately 5% of the southwestern portion of the Cell.
2   148 10 SW Conservation within this Cell will contribute to assembly of Proposed Linkage 4. Conservation within this Cell will focus on annual grasslands habitat. Areas conserved within this Cell will be connected to coastal sage scrub habitat and annual grasslands proposed for conservation to the north in Cell #101 and to Cell Group E in the Reche Canyon/Badlands Area Plan. Conservation within this Cell will range from 5%-15% of the northeastern portion of the Cell.
2   196 16 NW Conservation within this Cell will contribute to assembly of Existing Noncontiguous Habitat Block A. Conservation within this Cell will focus on coastal sage scrub habitat and annual grasslands. Areas conserved within this Cell will be connected to conserved coastal sage scrub habitat occurring on Box Springs Reserve to the south and to annual grasslands and coastal sage scrub proposed for conservation to the east in Cell #197. Conservation within this Cell will range from 50%-60% of the eastern portion of the Cell.
2   197 16 NE Conservation within this Cell will contribute to assembly of Existing Noncontiguous Habitat Block A. Conservation within this Cell will focus on coastal sage scrub, annual grasslands, woodlands and forests habitats. Areas conserved within this Cell will be connected to conserved coastal sage scrub habitat occurring on Box Springs Reserve to the south, to annual grasslands and coastal sage scrub proposed for conservation to the west in Cell #196 and to annual grasslands proposed for conservation to the north in Cell #147. Conservation within this Cell will range from 45%-55% of the western portion of the Cell.






3.3.6 Jurupa Area Plan

This section identifies target acreages, applicable Cores and Linkages, Area Plan Subunits and Criteria for the Jurupa Area Plan. For a summary of the methodology and map resources used to develop the target acreages and Criteria for the MSHCP Conservation Area, including this Area Plan, see Section 3.3.1.

Target Acreages

The target conservation acreage range for the Jurupa Area Plan is 4,230 - 5,210 acres; it is composed of approximately 3,340 acres of existing Public/Quasi-Public Lands and 890 - 1,870 acres of Additional Reserve Lands.

Applicable Cores and Linkages

The MSHCP Conservation Area comprises a variety of existing and proposed Cores, Linkages, Constrained Linkages and Noncontiguous Habitat Blocks (referred to here as "cores and linkages"). The Cores and Linkages listed below are within the Jurupa Area Plan. For descriptions of these Cores and Linkages and more information about the biologically meaningful elements of the MSHCP Conservation Area within the Jurupa Area Plan, see Section 3.2.3 and MSHCP Volume II, Section A.

Cores and Linkages within Jurupa Area Plan

Descriptions of Planning Species, Biological Issues and Considerations and Criteria for each Area Plan Subunit within the Jurupa Area Plan are presented later in this section. These descriptions, combined with the descriptions of the Cores and Linkages referred to above, provide information about biological issues to be considered in conjunction with Reserve Assembly within the Jurupa Area Plan. As noted in Section 3.1, the Area Plan boundaries established as part of the Riverside County General Plan were selected to provide an organizational framework for the Area Plan Subunits and Criteria. While these boundaries are not biologically based, unlike the Cores and Linkages, they relate specifically to General Plan boundaries and the jurisdictional boundaries of incorporated Cities and were selected to facilitate implementation of the MSHCP in the context of existing institutional and planning boundaries.

Area Plan Subunits

The Jurupa Area Plan is divided into three Subunits. For each Subunit, target conservation acreages are established along with a description of the Planning Species, Biological Issues and Considerations, and Criteria for each Subunit. For more information regarding specific conservation objectives for the Planning Species, see Section 9.0. Subunit boundaries are depicted on the Cells and Cell Groupings map displays (Figures 3-12 and 3-13). Table 3-7 presents the Criteria for the Jurupa Area Plan.

Subunit 1: Santa Ana River - North

Target acreage range for Additional Reserve Lands within Subunit: 135-245 acres

Cells within this Subunit: 187, 610, 617, 699 and 700

Planning Species:

Biological Issues and Considerations:

Subunit 2: Jurupa Mountains

Target acreage range for Additional Reserve Lands within Subunit: 445-1,055 acres
See also species-specific conservation objectives 1A, 1B and 1C for Delhi Sands flower-loving fly in Table 9-2 of this document for target acreages

Cell Groups within this Subunit: B, C, D, E, F and G
Planning Species:

Biological Issues and Considerations:

Subunit 3: Delhi Sands Area

Target acreage range for Additional Reserve Lands within Subunit:

See species-specific conservation objectives 1A, 1B and 1C for Delhi Sands flower-loving fly in Table 9-2 of this document for target acreages

Cell Groups within this Subunit: A

Cells within this Subunit (not in a Cell Group): 21, 22, 35, 55 and 168
Planning Species:

Biological Issues and Considerations:

TABLE 3-7
CRITERIA FOR JURUPA AREA PLAN

Sub
Unit
Cell Group Quadrat
Number
USGS Section Quarter
Section
Criteria
SUBUNIT 1 - Santa Ana River North
1   187 15 NE Conservation within this Cell will contribute to assembly of Existing Core A. Conservation within this Cell will focus on Riversidean alluvial fan sage scrub habitat and agricultural land along the Santa Ana River. Conservation within this Cell will range from 15%-25% of the Cell focusing in the eastern portion of the Cell.
1   610 29 SE Conservation within this Cell will contribute to assembly of Existing Core A. Conservation within this Cell will focus on riparian scrub, woodland, forest and water habitat and agricultural land adjacent to the Santa Ana River. Areas conserved within this Cell will be connected to agricultural land proposed for conservation adjacent to the Santa Ana River in Cell #699 to the southwest and to riparian scrub, woodland, forest and water habitat and agricultural land proposed for conservation along the Santa Ana River in Cell #700 to the south. Conservation within this Cell will range from 30%-40% of the Cell focusing in the southeastern portion of the Cell.
1   617 25 SW Conservation within this Cell will contribute to assembly of Existing Core A. Conservation within this Cell will focus on lands connecting existing conserved wetland habitat along the Santa Ana River based on existing land constraints. Areas conserved within this Cell will be connected to habitat proposed for conservation in Cell #617 in the Cities of Riverside and Norco to the south. Conservation within this Cell will be approximately 5% of the Cell focusing in the central portion of the Cell.
1   699 32 NW Conservation within this Cell will contribute to assembly of Existing Core A. Conservation within this Cell will focus on riparian scrub, woodland, forest and water habitat and agricultural land adjacent to the Santa Ana River. Areas conserved within this Cell will be connected to agricultural land proposed for conservation adjacent to the Santa Ana River in Cell #610 to the northeast and in Cell #700 to the east, and to riparian scrub, woodland, forest and water habitat and agricultural land proposed for conservation along the Santa Ana River in Cell #698 in the Eastvale Area Plan to the west and in Cell #699 in the Cities of Riverside and Norco to the south. Conservation within this Cell will range from 25%-35% of the Cell focusing in the northern portion of the Cell.
1   700 32 NE Conservation within this Cell will contribute to assembly of Existing Core A. Conservation within this Cell will focus on riparian scrub, woodland, forest and water habitat and agricultural land along the Santa Ana River. Areas conserved within this Cell will be connected to agricultural land proposed for conservation adjacent to the Santa Ana River in Cell #699 to the west, to riparian scrub, woodland, forest and water habitat and agricultural land proposed for conservation along the Santa Ana River in Cell #610 to the north, and to riparian scrub, woodland, forest and water habitat proposed for conservation in Cell #700 in the Cities of Riverside and Norco to the south. Conservation within this Cell will range from 25%-35% of the Cell focusing in the northern portion of the Cell.
SUBUNIT 2 - Jurupa Mountains
2 B 10 03 NW Conservation within this Cell Group will contribute to assembly of Proposed Noncontiguous Habitat Block 2. Conservation within this Cell Group will focus on coastal sage scrub and grassland habitat. Areas conserved within this Cell Group will be connected to coastal sage scrub and grassland habitat proposed for conservation in Cell Group C to the east. Conservation within this Cell Group will range from 15%-25% of the Cell Group focusing in the northeastern portion of the Cell Group. See also species-specific conservation objectives 1A, 1B and 1C for Delhi Sands flower-loving fly in Table 9-2 of this document for Criteria for this Cell Group.
2 B 12 03 NE
2 B 39 03 SE
2 B 42 03 SW
2 C 14 2 NW Conservation within this Cell Group will contribute to assembly of Proposed Noncontiguous Habitat Block 2. Conservation within this Cell Group will focus on coastal sage scrub and chaparral habitat. Areas conserved within this Cell Group will be connected to coastal sage scrub and grassland habitat proposed for conservation in Cell Group B to the west and to chaparral and coastal sage scrub habitat proposed for conservation in Cell Group D to the east. Conservation within this Cell Group will range from 35%-45% of the Cell Group focusing in the northern portion of the Cell Group.
2 C 40 02 SW
2 D 16 2 NE Conservation within this Cell Group will contribute to assembly of Proposed Noncontiguous Habitat Block 2. Conservation within this Cell Group will focus on chaparral and coastal sage scrub habitat. Areas conserved within this Cell Group will be connected to coastal sage scrub and chaparral habitat proposed for conservation in Cell Group C to the west. Conservation within this Cell Group will range from 10%-20% of the Cell Group focusing in the northwestern portion of the Cell Group.
2 D 44 02 SE
2 E 17 01 NW Conservation within this Cell Group will contribute to assembly of Proposed Noncontiguous Habitat Block 2. Conservation within this Cell Group will focus on coastal sage scrub habitat. Areas conserved within this Cell Group will be connected to coastal sage scrub habitat proposed for conservation in Cell Group F to the east. Conservation within this Cell Group will range from 5%-15% of the Cell Group focusing in the northeastern portion of the Cell Group.
2 E 18 01 NE
2 E 45 01 SW
2 E 46 01 SE
2 E 75 12 NE
2 E 76 12 NW
2 F 15 06 NW Conservation within this Cell Group will contribute to assembly of Proposed Noncontiguous Habitat Block 2. Conservation within this Cell Group will focus on coastal sage scrub habitat. Areas conserved within this Cell Group will be connected to coastal sage scrub habitat proposed for conservation in Cell Group E to the west and to coastal sage scrub habitat proposed for conservation in Cell Group G to the east. Conservation within this Cell Group will range from 30%-40% of the Cell Group focusing in the northern portion of the Cell Group.
2 F 47 06 SW
2 F 78 07 NW
2 G 8 05 NW Conservation within this Cell Group will contribute to assembly of Proposed Noncontiguous Habitat Block 2. Conservation within this Cell Group will focus on coastal sage scrub habitat. Areas conserved within this Cell Group will be connected to coastal sage scrub habitat proposed for conservation in Cell Group F to the west. Conservation within this Cell Group will range from 10%-20% of the Cell Group focusing in the northwestern portion of the Cell Group. See also species-specific conservation objectives 1A, 1B and 1C for Delhi Sands flower-loving fly in Table 9-2 of this document for Criteria for this Cell Group.
2 G 9 06 NE
2 G 11 05 NE
2 G 48 06 SE
2 G 49 05 SW
2 G 50 05 SE
2 G 80 07 NE
SUBUNIT 3 - Delhi Sands Area
3 A 68 07 NW See species-specific conservation objectives 1A, 1B and 1C for Delhi Sands flower-loving fly in Table 9-2 of this document for Criteria for this Cell Group.
3 A 118 07 SW
3   21 3 NE See species-specific conservation objectives 1A, 1B and 1C for Delhi Sands flower-loving fly in Table 9-2 of this document for Criteria for this Cell.
3   22 02 NW See species-specific conservation objectives 1A, 1B and 1C for Delhi Sands flower-loving fly in Table 9-2 of this document for Criteria for this Cell.
3   35 06 SW See species-specific conservation objectives 1A, 1B and 1C for Delhi Sands flower-loving fly in Table 9-2 of this document for Criteria for this Cell.
3   55 02 SW See species-specific conservation objectives 1A, 1B and 1C for Delhi Sands flower-loving fly in Table 9-2 of this document for Criteria for this Cell.
3   168 18 NW See species-specific conservation objectives 1A, 1B and 1C for Delhi Sands flower-loving fly in Table 9-2 of this document for Criteria for this Cell.






3.3.7 Lake Mathews/Woodcrest Area Plan

This section identifies target acreages, applicable Cores and Linkages, Area Plan Subunits and Criteria for the Lake Mathews/Woodcrest Area Plan. For a summary of the methodology and map resources used to develop the target acreages and Criteria for the MSHCP Conservation Area, including this Area Plan, see Section 3.3.1.

Target Acreages

The target conservation acreage range for the Lake Mathews/Woodcrest Area Plan is 16,695 - 18,950 acres; it is composed of approximately 13,480 acres of existing Public/Quasi-Public Lands and 3,215 - 5,470 acres of Additional Reserve Lands.

Applicable Cores and Linkages

The MSHCP Conservation Area comprises a variety of existing and proposed Cores, Linkages, Constrained Linkages and Noncontiguous Habitat Blocks (referred to here as "Cores and Linkages"). The Cores and Linkages listed below are within the Lake Mathews/Woodcrest Area Plan. For descriptions of these Cores and Linkages and more information about the biologically meaningful elements of the MSHCP Conservation Area within the Lake Mathews/Woodcrest Area Plan, see Section 3.2.3 and MSHCP Volume II, Section A.

Cores and Linkages within Lake Mathews/Woodcrest Area Plan

Descriptions of Planning Species, Biological Issues and Considerations and Criteria for each Area Plan Subunit within the Lake Mathews/Woodcrest Area Plan are presented later in this section. These descriptions, combined with the descriptions of the Cores and Linkages referred to above, provide information about biological issues to be considered in conjunction with Reserve Assembly within the Lake Mathews/Woodcrest Area Plan. As noted in Section 3.1, the Area Plan boundaries established as part of the Riverside County General Plan were selected to provide an organizational framework for the Area Plan Subunits and Criteria. While these boundaries are not biologically based, unlike the Cores and Linkages, they relate specifically to General Plan boundaries and the jurisdictional boundaries of incorporated Cities and were selected to facilitate implementation of the MSHCP in the context of existing institutional and planning boundaries.

Area Plan Subunits

The Lake Mathews/Woodcrest Area Plan is divided into four Subunits. For each Subunit, target conservation acreages are established along with a description of the Planning Species, Biological Issues and Considerations, and Criteria for each Subunit. For more information regarding specific conservation objectives for the Planning Species, see Section 9.0. Subunit boundaries are depicted on the Cells and Cell Groupings map displays (Figures 3-14 and 3-15). Table 3-8 presents the Criteria for the Lake Mathews/Woodcrest Area Plan.

Subunit 1: Lake Mathews - East

Target acreage range for Additional Reserve Lands within Subunit: 1,140-1,680 acres

Cell Groups within this Subunit: A and B

Cells within this Subunit (not in a Cell Group): 2026, 2121, 2405, 2407 and 2408

Planning Species:

Biological Issues and Considerations:

Subunit 2: Dawson Canyon

Target acreage range for Additional Reserve Lands within Subunit: 815-1,090 acres

Cell Groups within this Subunit: C

Cells within this Subunit (not in a Cell Group): 2935 and 2937

Planning Species:

Biological Issues and Considerations:

Subunit 3: Gavilan Hills - West

Target acreage range for Additional Reserve Lands within Subunit: 1,175-2,475 acres

Cell Groups within this Subunit: D, E, F, G, H, I, J, K, L, M and N

Cells within this Subunit (not in a Cell Group): 2324 and 2629

Planning Species:

Biological Issues and Considerations:

Subunit 4: Good Hope - West

Target acreage range for Additional Reserve Lands within Subunit: 85-225 acres

Cell Groups within this Subunit: O, P, Q and R

Planning Species:

Biological Issues and Considerations:

TABLE 3-8
CRITERIA FOR MATHEWS/WOODCREST AREA PLAN

Sub
Unit
Cell Group Quadrat
Number
USGS Section Quarter
Section
Criteria
SUBUNIT 1 - Lake Mathews East
1 A 2024 02 NE Conservation within this Cell Group will contribute to assembly of Proposed Extension of Existing Core 2. Conservation within this Cell Group will focus on coastal sage scrub and grassland habitat. Areas conserved within this Cell Group will be connected to coastal sage scrub and grassland habitat proposed for conservation in Cell Group B to the south. Conservation within this Cell Group will range from 45%-55% of the Cell Group focusing in the western portion of the Cell Group.
1 A 2025 01 NW
1 B 2117 03 SE Conservation within this Cell Group will contribute to assembly of Proposed Extension of Existing Core 2. Conservation within this Cell Group will focus on coastal sage scrub, grassland, riparian scrub, woodland and forest habitat. Areas conserved within this Cell Group will be connected to coastal sage scrub and grassland habitat proposed for conservation in Cell Group A to the north, in Cell #2121 to the east and in Cell #2117 in the Temescal Canyon Area Plan to the west, to coastal sage scrub habitat proposed for conservation in Cell #2407 to the south and in Cell #2308 in the Temescal Canyon Area Plan to the west, and to coastal sage scrub, grassland, riparian scrub, woodland and forest habitat proposed for conservation in Cell #2405 to the south and in Cell #2211 in the Temescal Canyon Area Plan to the west. Conservation within this Cell Group will range from 55%-65% of the Cell Group focusing in the northwestern portion of the Cell Group.
1 B 2118 02 SW
1 B 2119 02 SE
1 B 2120 01 SW
1 B 2211 10 NE
1 B 2212 11 NW
1 B 2213 11 NE
1 B 2214 12 NW
1 B 2308 10 SE
1 B 2309 11 SW
1 B 2310 11 SE
1 B 2311 12 SW
1   2026 01 NE Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 2. Conservation within this Cell will focus on coastal sage scrub and grassland habitat adjacent to Lake Mathews. Areas conserved within this Cell will be connected to coastal sage scrub habitat proposed for conservation in Cell Group A to the west and to coastal sage scrub and grassland habitat proposed for conservation in Cell #2121 to the south. Conservation within this Cell will range from 65%-75% of the Cell focusing in the central portion of the Cell.
1   2121 01 SE Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 2. Conservation within this Cell will focus on coastal sage scrub and grassland habitat adjacent to Lake Mathews. Areas conserved within this Cell will be connected to coastal sage scrub and grassland habitat proposed for conservation in Cell Group B to the west and in Cell #2026 to the north. Conservation within this Cell will range from 30%-40% of the Cell focusing in the northern and western portions of the Cell.
1   2405 14 NW Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 2. Conservation within this Cell will focus on coastal sage scrub, grassland, riparian scrub, woodland, and forest habitat. Areas conserved within this Cell will be connected to coastal sage scrub, grassland, riparian scrub, woodland, and forest habitat proposed for conservation in Cell Group B to the north and to coastal sage scrub habitat proposed for conservation in Cell Group C in the Temescal Canyon Area Plan to the west. Conservation within this Cell be approximately 5% of the Cell focusing in the northern portion of the Cell.
1   2407 13 NW Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 2. Conservation within this Cell will focus on coastal sage scrub, grassland, riparian scrub, woodland, and forest habitat. Areas conserved within this Cell will be connected to coastal sage scrub habitat proposed for conservation in Cell Group B to the north and to grassland habitat proposed for conservation in Cell #2408 to the east. Conservation within this Cell will range from 55%-65% of the Cell focusing in the central portion of the Cell.
1   2408 13 NE Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 2. Conservation within this Cell will focus on grassland habitat. Areas conserved within this Cell will be connected to grassland habitat proposed for conservation in Cell #2407 to the west. Conservation within this Cell will range from 5%-15% of the Cell focusing in the central portion of the Cell.
SUBUNIT 2 - Dawson Canyon
2 C 2936 30 SW Conservation within this Cell Group will contribute to assembly of Proposed Extension of Existing Core 2. Conservation within this Cell Group will focus on coastal sage scrub, chaparral, grassland, woodland and forest habitat. Areas conserved within this Cell Group will be connected to coastal sage scrub habitat proposed for conservation in Cell #2935 and in Cell Group G in the Temescal Canyon Area Plan both to the west. Conservation within this Cell Group will range from 75%-85% of the Cell Group focusing in the western portion of the Cell Group.
2 C 2938 30 SE
2 C 2941 29 SW
2 C 3040 31 NE
2 C 3145 31 SW
2 C 3146 31 SE
2   2935 25 SE Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 2. Conservation within this Cell will focus on coastal sage scrub, grassland, riparian scrub, woodland, and forest habitat. Areas conserved within this Cell will be connected to coastal sage scrub habitat proposed for conservation in Cell Group C to the east and in Cell #2937 to the west and to coastal sage scrub and grassland habitat proposed for conservation in Cell Group F in the Temescal Canyon Area Plan to the south. Conservation within this Cell will range from 70%-80% of the Cell focusing in the northern and southern portions of the Cell.
2   2937 25 SW Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 2. Conservation within this Cell will focus on coastal sage scrub habitat. Areas conserved within this Cell will be connected to coastal sage scrub habitat proposed for conservation in Cell #2935 to the east and to coastal sage scrub and grassland habitat proposed for conservation in Cell Group F in the Temescal Canyon Area Plan to the south. Conservation within this Cell will range from 10%-20% of the Cell focusing in the southeastern portion of the Cell.
SUBUNIT 3 - Gavilan Hills West
3 D 2323 12 SW Conservation within this Cell Group will contribute to assembly of Proposed Linkage 3. Conservation within this Cell Group will focus on chaparral habitat. Areas conserved within this Cell Group will be connected to riparian scrub, woodland, and forest habitat proposed for conservation in Cell Group H to the south and to habitat proposed for conservation in Cell Group F to the east. Conservation within this Cell Group will be approximately 5% of the Cell Group focusing in the southeastern portion of the Cell Group.
3 D 2419 13 NW
3 E 2325 07 SW Conservation within this Cell Group will contribute to assembly of Proposed Linkage 3. Conservation within this Cell Group will focus on grassland, riparian scrub, woodland, and forest habitat. Areas conserved within this Cell Group will be connected to grassland habitat proposed for conservation in Cell Group G to the south and to grassland, riparian scrub, woodland and forest habitat proposed for conservation in Cell #2324 to the west. Conservation within this Cell Group will range from 10%-20% of the Cell Group focusing in the southwestern portion of the Cell Group.
3 E 2326 07 SE
3 F 2420 13 NE Conservation within this Cell Group will contribute to assembly of Proposed Linkage 3. Conservation within this Cell Group will focus on a mosaic of habitat types including chaparral, coastal sage scrub, grassland, woodland, and forest habitat. Areas conserved within this Cell Group will be connected to grassland and chaparral habitat proposed for conservation in Cell Group G to the east, to chaparral, coastal sage scrub, woodland and forest habitat proposed for conservation in Cell Group I also to the east, to chaparral and coastal sage scrub habitat proposed for conservation in Cell #2629 to the south and in Cell Group H to the west, and to chaparral habitat proposed for conservation in Cell Group D also to the west. Conservation within this Cell Group will range from 75%-85% of the Cell Group focusing in the southern portion of the Cell Group.
3 F 2525 13 SE
3 G 2421 18 NW Conservation within this Cell Group will contribute to assembly of Proposed Linkage 3. Conservation within this Cell Group will focus on a mosaic of habitat types including chaparral, coastal sage scrub, grassland, woodland, and forest habitat. Areas conserved within this Cell Group will be connected to grassland habitat proposed for conservation in Cell Group E to the north, to grassland and chaparral habitat proposed for conservation in Cell Group F to the west, and to grassland, chaparral, and coastal sage scrub habitat proposed for conservation in Cell Group I to the south. Conservation within this Cell Group will range from 20%-30% of the Cell Group focusing in the southwestern portion of the Cell Group.
3 G 2422 18 NE
3 G 2423 17 NW
3 G 2428 17 NE
3 H 2523 14 SE Conservation within this Cell Group will contribute to assembly of Proposed Linkage 3. Conservation within this Cell Group will focus on a mosaic of habitat types including chaparral, coastal sage scrub, riparian scrub, woodland, and forest habitat. Areas conserved within this Cell Group will be connected to chaparral habitat proposed for conservation in Cell Group D to the north, to coastal sage scrub and chaparral habitat proposed for conservation in Cell Group F to the east, and to chaparral, riparian scrub, woodland, and forest habitat proposed for conservation in Cell Group J to the south. Conservation within this Cell Group will range from 30%-40% of the Cell Group focusing in the eastern portion of the Cell Group.
3 H 2524 13 SW
3 I 2526 18 SW Conservation within this Cell Group will contribute to assembly of Proposed Linkage 3. Conservation within this Cell Group will focus on a mosaic of habitat types including chaparral, coastal sage scrub, grassland, woodland, and forest habitat. Areas conserved within this Cell Group will be connected to chaparral, coastal sage scrub, and grassland habitat proposed for conservation in Cell Group G to the north, to coastal sage scrub and chaparral habitat proposed for conservation in Cell Group F to the west and in Cell Group M to the south, and to chaparral, coastal sage scrub, woodland, and forest habitat proposed for conservation in Cell Group L to the south. Conservation within this Cell Group will range from 50%-60% of the Cell Group focusing in the western portion of the Cell Group.
3 I 2527 18 SE
3 I 2528 17 SW
3 I 2535 17 SE
3 J 2627 23 NE Conservation within this Cell Group will contribute to assembly of Proposed Linkage 3. Conservation within this Cell Group will focus on chaparral, riparian scrub, woodland, and forest habitat. Areas conserved within this Cell Group will be connected to chaparral, riparian scrub, woodland and forest habitat proposed for conservation in Cell Group H to the north and to chaparral habitat proposed for conservation in Cell #2629 to the east. Conservation within this Cell Group will be approximately 5% of the Cell Group focusing in the northeastern portion of the Cell Group.
3 J 2628 24 NW
3 J 2735 23 SE
3 J 2736 24 SW
3 J 2842 26 NE
3 J 2843 25 NW
3 L 2630 19 NW Conservation within this Cell Group will contribute to assembly of Proposed Linkage 3. Conservation within this Cell Group will focus on a mosaic of habitat types including chaparral, coastal sage scrub, grassland, woodland, and forest habitat. Areas conserved within this Cell Group will be connected to chaparral, coastal sage scrub, woodland and forest habitat proposed for conservation in Cell Group I to the north, to coastal sage scrub habitat proposed for conservation in Cell #2629 to the west, and to chaparral, grassland, woodland, and forest habitat proposed for conservation in Cell Group M to the east. Conservation within this Cell Group will range from 35%-45% of the Cell Group focusing in the northern portion of the Cell Group.
3 L 2738 19 SW
3 L 2846 30 NW
3 L 2951 30 SW
3 M 2631 19 NE Conservation within this Cell Group will contribute to assembly of Proposed Linkage 3. Conservation within this Cell Group will focus on a mosaic of habitat types including chaparral, coastal sage scrub, grassland, woodland, and forest habitat. Areas conserved within this Cell Group will be connected to chaparral, coastal sage scrub, woodland and forest habitat proposed for conservation in Cell Group I to the north and to chaparral, grassland, woodland, and forest habitat proposed for conservation in Cell Group N to the east and in Cell Group L to the west. Conservation within this Cell Group will range from 30%-40% of the Cell Group focusing in the northern portion of the Cell Group.
3 M 2634 20 NW
3 M 2740 20 SW
3 M 2848 30 NE
3 M 2853 29 NW
3 M 2949 30 SE
3 M 2950 29 SW
3 N 2640 20 NE Conservation within this Cell Group will contribute to assembly of Proposed Linkage 3. Conservation within this Cell Group will focus on a mosaic of habitat types including chaparral, coastal sage scrub, grassland, woodland, and forest habitat. Areas conserved within this Cell Group will be connected to chaparral, grassland, woodland, and forest habitat proposed for conservation in Cell Group M to the west and to coastal sage scrub habitat proposed for conservation in Cell Group C in the Mead Valley Area Plan to the east. Conservation within this Cell Group will range from 40%-50% of the Cell Group focusing in the central portion of the Cell Group.
3 N 2745 20 SE
3 N 2858 29 NE
3 N 2954 29 SE
3   2324 12 SE Conservation within this Cell will contribute to assembly of Proposed Linkage 3. Conservation within this Cell will focus on riparian scrub, woodland, forest and grassland habitat adjacent to the Colorado River Aqueduct. Areas conserved within this Cell will be connected to riparian scrub, woodland, forest and grassland habitat proposed for conservation along the Colorado River Aqueduct in Cell Group E to the east. Conservation within this Cell will range from 25% - 35% of the Cell focusing in the central portion of the Cell.
3   2629 24 NE Conservation within this Cell will contribute to assembly of Proposed Linkage 3. Conservation within this Cell will focus on coastal sage scrub and chaparral habitat. Areas conserved within this Cell will be connected to chaparral habitat proposed for conservation in Cell Group J to the west, to coastal sage scrub and chaparral habitat proposed for conservation in Cell Group F to the north, and to woodland and forest habitat proposed for conservation in Cell Group L to the east. Conservation within this Cell will range from 5%-15% of the Cell focusing in the northern portion of the Cell.
3 K 2844 25 NE No new conservation is anticipated within this Cell Group.
3 K 2948 25 SE
SUBUNIT 4 - Good Hope West
4 O 3051 31 NE Conservation within this Cell Group will contribute to assembly of Proposed Linkage 3. Conservation within this Cell Group will focus on chaparral and coastal sage scrub habitat. Areas conserved within this Cell Group will be connected to coastal sage scrub habitat proposed for conservation in Cell Group F in the Mead Valley Area Plan to the east. Conservation within this Cell Group will range from 5%-15% of the Cell Group focusing in the central and eastern portions of the Cell Group.
4 O 3052 32 NW
4 O 3054 32 NE
4 O 3056 31 NW
4 P 3158 32 SW Conservation within this Cell Group will contribute to assembly of Proposed Linkage 3. Conservation within this Cell Group will focus on chaparral and coastal sage scrub habitat. Conservation within this Cell Group will range from 10%-20% of the Cell Group focusing in the central portion of the Cell Group.
4 P 3161 32 SE
4 Q 3263 05 NW Conservation within this Cell Group will contribute to assembly of Proposed Linkage 3. Conservation within this Cell Group will focus on chaparral and grassland habitat. Areas conserved within this Cell Group will be connected to chaparral and coastal sage scrub habitat proposed for conservation in Cell Group H in the Mead Valley Area Plan to the northeast. Conservation within this Cell Group will range from 5%-15% of the Cell Group focusing in the northeastern portion of the Cell Group.
4 Q 3267 05 NE
4 R 3370 05 SE Conservation within this Cell Group will contribute to assembly of Proposed Core 1. Conservation within this Cell Group will focus on chaparral, coastal sage scrub, riparian scrub, woodland and forest habitat. Areas conserved within this Cell Group will be connected to chaparral, coastal sage scrub, riparian scrub, woodland and forest habitat proposed for conservation in Cell Group B in the Elsinore Area Plan to the south. Conservation within this Cell Group will range from 10%-20% of the Cell Group focusing in the southeastern portion of the Cell Group.
4 R 3372 05 SW






3.3.8 Lakeview/Nuevo Area Plan

This section identifies target acreages, applicable Cores and Linkages, Area Plan Subunits and Criteria for the Lakeview/Nuevo Area Plan. For a summary of the methodology and map resources used to develop the target acreages and Criteria for the MSHCP Conservation Area, including this Area Plan, see Section 3.3.1.

Target Acreages

The target conservation acreage range for the Lakeview/Nuevo Area Plan is 7,390 - 10,975 acres; it is composed of approximately 740 acres of existing Public/Quasi-Public Lands and 6,650 - 10,235 acres of Additional Reserve Lands.

Applicable Cores and Linkages

The MSHCP Conservation Area comprises a variety of existing and proposed Cores, Linkages, Constrained Linkages and Noncontiguous Habitat Blocks (referred to here generally as "Cores and Linkages"). The Cores and Linkages listed below are within the Lakeview/Nuevo Area Plan. For descriptions of these Cores and Linkages and more information about the biologically meaningful elements of the MSHCP Conservation Area within the Lakeview/Nuevo Area Plan, see Section 3.2.3, and MSHCP Volume II, Section A.

Cores and Linkages within the Lakeview/Nuevo Area Plan

Descriptions of Planning Species, Biological Issues and Considerations and Criteria for each Area Plan Subunit within the Lakeview/Nuevo Area Plan are presented later in this section. These descriptions, combined with the descriptions of the Cores and Linkages referred to above, provide information about biological issues to be considered in conjunction with Reserve Assembly within the Lakeview/Nuevo Area Plan. As noted in Section 3.1, the Area Plan boundaries established as part of the Riverside County General Plan were selected to provide an organizational framework for the Area Plan Subunits and Criteria. While these boundaries are not biologically based, unlike the Cores and Linkages, they relate specifically to General Plan boundaries and the jurisdictional boundaries of incorporated Cities and were selected to facilitate implementation of the MSHCP in the context of existing institutional and planning boundaries.

Area Plan Subunits

The Lakeview/Nuevo Area Plan is divided into two Subunits. For each Subunit, target conservation acreages are established along with a description of the Planning Species, Biological Issues and Considerations, and Criteria for each Subunit. For more information regarding specific conservation objectives for the Planning Species, see Section 9.0. Subunit boundaries are depicted on the Cells and Cell Groupings map displays (Figures 3-16 and 3-17). Table 3-9 presents the Criteria for the Lakeview/Nuevo Area Plan.

Subunit 1: San Jacinto River - Middle Reach

Target acreage range for Additional Reserve Lands within Subunit: 2,605-4,025 acres

Cell Groups within this Subunit: A, B, C, D, E, F, G, H, I, J and K

Cells within this Subunit (not in a Cell Group): 2066, 2068, 2069, 2070, 2161, 2251, 2252, 2253, 2349, 2549, 2760, and 2867

Planning Species:

Biological Issues and Considerations:

The Target acreage range for Additional Reserve Lands within this Subunit incorporates the following acreage goals for individual plant populations within this Subunit. The acreage goals for individual plant populations noted below are intended to be accomplished within this Subunit in combination with Subunit 4 of the Mead Valley Area Plan.

San Jacinto Valley crownscale 236 acres
thread-leaved brodiaea 24 acres
spreading navarretia 5 acres
Davidson's saltscale and Wright's trichochoronis (aggregate) 0.2 acre
Coulter's goldfields 33 acres

Survey Methodology: Prior to beginning the survey effort, a map of known target species occurrences will be obtained from RCFCWCD and known localities will be visited to establish the phenology of the target Covered Species. All new occurrences of target Covered Speices will be mapped and recorded on a global positioning system (GPS).

Site specific information, such as number of individuals present (direct count or estimate from sub samples), other species present, site conditions, and types and levels of disturbance as appropriate will be recorded for each occurrence polygon.

Mapping of target Covered Species will be done on topographic map or aerial photograph not smaller than 400-scale. If an aerial photograph is used, it will not be more than two years old. A minimum of four GPS points will be taken, one each at the north, south, east and west limits of the polygon. Where polygons are large or exhibit irregular shapes, enough GPS points will be taken to accurately record the limits of occupied area. Where there are gaps or breaks between individuals of the target Covered Species of 10 meters or more, those individuals will be mapped and recorded via GPS into separate polygons.

Voucher specimens will be obtained from new occurrences more than one quarter section away from known occurrences of the same species. Collections should not be excessive. No material will be collected from known occurrences, unless species identification is in doubt. Vouchers are to be deposited at a recognized herbarium with the recorded GPS location information recorded on the specimen label.

Maps, recorded GPS information and disposition of any voucher specimens are to be turned over to the official MSHCP data repository and RCFCWCD for digitizing. Records not turned over for digitizing and vouchered as appropriate cannot be counted for purposes of meeting the acreage requirements noted above. Occurrences digitized by RCFCWCD or the MSHCP data repository and vouchered as appropriate can be counted towards the acreage requirements noted above as long as those occurrences are not subject to: (1) grazing of domestic livestock; (2) ground disturbing activities, including farming and weed suppression; (3) dewatering or irrigation; and (4) application of soil amendments (including manure and sludge). Occurrences documented subsequent to any of those disturbances can be counted for purposes of meeting the acreage requirements noted above until such time as the new occurrence is disturbed. Surveyors are to record the location and extent of the above listed disturbances in the field as they are encountered. Disturbance information is to be provided to RCFCWCD for digitization with the plant locality data.

Subunit 2: Lakeview Mountains - West

Target acreage range for Additional Reserve Lands within Subunit: 4,045-6,210 acres

Cell Groups within this Subunit: L, M, N, O, P and Q

Cells within this Subunit (not in a Cell Group): 2554, 2555, 2753, 2767, 3078, 3186, 3188, 3192, 3292, and 3295

Planning Species:

Biological Issues and Considerations:

TABLE 3-9
CRITERIA FOR LAKEVIEW/NUEVO AREA PLAN

Sub
Unit
Cell Group Quadrat
Number
USGS Section Quarter
Section
Criteria
SUBUNIT 1 - San Jacinto River, Middle Reach
1

A

3175 34 SW Conservation within this Cell Group will contribute to Proposed Extension of Existing Core 4. Conservation within this Cell Group will focus on assembly of playas/vernal pool habitat and agricultural land associated with the San Jacinto River. Areas conserved within this Cell Group will be connected to playas/vernal pool habitat and agricultural land proposed for conservation in Cell Group B to the north, to agricultural land proposed for conservation in Cell #3278 and #3279 in the Mead Valley Area Plan to the south, and to playas/vernal pool habitat proposed for conservation in Cell #3174 in the Mead Valley Area Plan to the west. Conservation within this Cell Group will range from 60%-70% of the Cell Group focusing in the western portion of the Cell Group.
1 A 3176 34 SE
1 B 2970 27 SW Conservation within this Cell Group will contribute to Proposed Extension of Existing Core 4. Conservation within this Cell Group will focus on assembly of playas/vernal pool and water habitat and agricultural land associated with the San Jacinto River. Areas conserved within this Cell Group will be connected to playas/vernal pool habitat and agricultural land proposed for conservation in Cell Group A to the south, to grassland, playas/vernal pool and water habitat and agricultural land proposed for conservation in Cell Group C and Cell #2867 to the north, and to agricultural land proposed for conservation in Cell Group G in the Mead Valley Area Plan to the west. Conservation within this Cell Group will range from 70%-80% of the Cell Group focusing in the western portion of the Cell Group.
1 B 2971 27 SE
1 B 2975 26 SW
1 B 3070 34 NW
1 B 3071 34 NE
1 B 3072 35 NW
1 C 2863 26 NE Conservation within this Cell Group will contribute to Proposed Extension of Existing Core 4. Conservation within this Cell Group will focus on assembly of a mosaic of habitat types including grassland, playas/vernal pool and water habitat and agricultural land associated with the San Jacinto River. Areas conserved within this Cell Group will be connected to water habitat and agricultural land proposed for conservation in Cell Group B to the south and southwest and to playas/vernal pool habitat and agricultural land proposed for conservation in Cell #2867 to the west and in Cell Group D to the north. Conservation within this Cell Group will range from 55%-65% of the Cell Group focusing in the western portion of the Cell Group.
1 C 2865 26 NW
1 D 2761 23 SE Conservation within this Cell Group will contribute to Proposed Extension of Existing Core 4. Conservation within this Cell Group will focus on assembly of playas/vernal pool, riparian scrub, woodland and forest habitat and agricultural land adjacent to the San Jacinto River. Areas conserved within this Cell Group will be connected to playas/vernal pool habitat and agricultural land proposed for conservation in Cell Group C to the south, to playas/vernal pool habitat proposed for conservation in Cell Group E to the north, and to playas/vernal pool, riparian scrub, woodland and forest habitat and agricultural land proposed for conservation in Cell #2760 to the east. Conservation within this Cell Group will range from 50%-60% of the Cell Group focusing in the eastern portion of the Cell Group.
1 D 2762 23 SW
1 E 2651 23 NE Conservation within this Cell Group will contribute to assembly of Proposed Extension of Existing Core 4. Conservation within this Cell Group will focus on playas/vernal pool habitat and agricultural land adjacent to the San Jacinto River. Areas conserved within this Cell Group will be connected to playas/vernal pool habitat and agricultural land proposed for conservation in Cell Group D to the southwest, in Cell Group F to the north and in Cell #2760 to the south. Conservation within this Cell Group will range from 70%-80% of the Cell Group focusing in the western portion of the Cell Group.
1 E 2652 24 NW
1 F 2547 14 SE Conservation within this Cell Group will contribute to assembly of Proposed Extension of Existing Core 4. Conservation within this Cell Group will focus on playas/vernal pool habitat and agricultural land adjacent to the San Jacinto River. Areas conserved within this Cell Group will be connected to playas/vernal pool habitat and agricultural land proposed for conservation in Cell Group E to the south and in Cell Group G to the north, and to agricultural land proposed for conservation in Cell #2549 to the east. Conservation within this Cell Group will range from 60%-70% of the Cell Group focusing in the eastern portion of the Cell Group.
1 F 2548 13 SW
1 G 2442 14 NE Conservation within this Cell Group will contribute to assembly of Proposed Extension of Existing Core 4. Conservation within this Cell Group will focus on playas/vernal pool habitat adjacent to the San Jacinto River. Areas conserved within this Cell Group will be connected to playas/vernal pool habitat proposed for conservation in Cell Groups F to the south, I to the north and H to the east. Conservation within this Cell Group will range from 50%-60% of the Cell Group focusing in the eastern portion of the Cell Group.
1 G 2443 13 NW
1 H 2444 13 NE Conservation within this Cell Group will contribute to assembly of Proposed Extension of Existing Core 4. Conservation within this Cell Group will focus on playas/vernal pool habitat and agricultural land adjacent to the San Jacinto River. Areas conserved within this Cell Group will be connected to playas/vernal pool habitat proposed for conservation in Cell Groups I to the northwest and G to the west, and to agricultural land proposed for conservation in Cell #2349 to the north and #2549 to the south. Conservation within this Cell Group will range from 55%-65% of the Cell Group focusing in the western portion of the Cell Group.
1 H 2445 18 NW
1 I 2347 12 SW Conservation within this Cell Group will contribute to assembly of Proposed Extension of Existing Core 4. Conservation within this Cell Group will focus on playas/vernal pool and grassland habitat adjacent to the San Jacinto River. Areas conserved within this Cell Group will be connected to grassland and playas/vernal pool habitat proposed for conservation in Cell #2251 to the north and to playas/vernal pool habitat proposed for conservation in Cell Groups G and H to the south and in Cell #2349 to the east. Conservation within this Cell Group will range from 60%-70% of the Cell Group focusing in the eastern portion of the Cell Group.
1 I 2348 12 SE
1 J 2067 04 NW Conservation within this Cell Group will contribute to assembly of Existing Core H. Conservation within this Cell Group will focus on playas/vernal pool habitat adjacent to the San Jacinto River. Areas conserved within this Cell Group will be connected to playas/vernal pool habitat proposed for conservation in Cell #2161 and #2066 to the west, and #2068 to the east. Conservation within this Cell Group will range from 55%-65% of the Cell Group focusing in the northern portion of the Cell Group.
1 J 2162 04 SW
1 K 2164 03 SW Conservation within this Cell Group will contribute to assembly of Proposed Constrained Linkage 20. Conservation within this Cell Group will focus on water, riparian scrub, woodland and forest habitat and agricultural land adjacent to the San Jacinto River. Areas conserved within this Cell Group will be connected to water habitat and agricultural land proposed for conservation in Cell #2070 to the north, to riparian scrub, woodland, and forest habitat and agricultural land proposed for conservation in Cell Group L to the south, and to agricultural land proposed for conservation in Cell #2166 in the San Jacinto Valley Area Plan to the east. Conservation within this Cell Group will range from 25%-35% of the Cell Group focusing in the eastern portion of the Cell Group.
1 K 2165 03 SE
1   2066 05 NE Conservation within this Cell will contribute to assembly of Existing Core H. Conservation within this Cell will focus on playas/vernal pool habitat adjacent to the San Jacinto River. Areas conserved within this Cell will be connected to playas/vernal pool habitat proposed for conservation in Cell #2161 to the south and Cell Group J to the east. Conservation within this Cell will range from 25%-35% of the Cell focusing in the southeastern portion of the Cell.
1   2068 04 NE Conservation within this Cell will contribute to assembly of Existing Core H. Conservation within this Cell will focus on playas/vernal pool habitat and agricultural land adjacent to the San Jacinto River. Areas conserved within this Cell will be connected to playas/vernal pool habitat proposed for conservation in Cell Group J to the west, to riparian scrub, woodland, and forest habitat proposed for conservation in Cell #2069 to the east, and to playas/vernal pool habitat proposed for conservation in Cell Group Z in the Reche Canyon/Badlands Area Plan to the north. Conservation within this Cell will range from 45%-55% of the Cell focusing in the northwestern portion of the Cell.
1   2069 03 NW Conservation within this Cell will contribute to assembly of Existing Core H. Conservation within this Cell will focus on wetland habitat associated with the San Jacinto River. Areas conserved within this Cell will be connected to agricultural land proposed for conservation in Cell #2068 to the west and to playas/vernal pool habitat proposed for conservation in Cell Group Z in the Reche Canyon/Badlands Area Plan to the north. Conservation within this Cell will range from 5%-15% of the Cell focusing in the northern portion of the Cell.
1   2070 03 NE Conservation within this Cell will contribute to assembly of Proposed Constrained Linkage 20. Conservation within this Cell will focus on water habitat and agricultural land adjacent to the San Jacinto River. Areas conserved within this Cell will be connected to water habitat and agricultural land proposed for conservation in Cell Group K to the south, to playas/vernal pool habitat and agricultural land proposed for conservation in Cell #2071 in the San Jacinto Valley Area Plan to the east, and to playas/vernal pool habitat proposed for conservation in Cell #2070 in the Reche Canyon/Badlands Area Plan to the north. Conservation within this Cell will range from 20%-30% of the Cell focusing in the southeastern portion of the Cell.
1   2161 05 SE Conservation within this Cell will contribute to assembly of Existing Core H. Conservation within this Cell will focus on playas/vernal pool habitat associated with the San Jacinto River. Areas conserved within this Cell will be connected to playas/vernal pool habitat proposed for conservation in Cell #2066 to the north and in Cell Group J to the east. Conservation within this Cell will range from 45%-55% of the Cell focusing in the eastern portion of the Cell.
1   2251 12 NE Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 4. Conservation within this Cell will focus on playas/vernal pool and grassland habitat adjacent to the San Jacinto River. Areas conserved within this Cell will be connected to playas/vernal pool habitat proposed for conservation in Cell Group I to the south and in Cell #2252 to the east and #2349 to the southeast. Conservation within this Cell will range from 35%-45% of the Cell focusing in the southern portion of the Cell.
1   2252 07 NW Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 4. Conservation within this Cell will focus on playas/vernal pool habitat and agricultural land adjacent to the San Jacinto River. Areas conserved within this Cell will be connected to playas/vernal pool habitat proposed for conservation in Cell Group I to the southwest and in Cell #2251 to the west and #2349 to the south and to agricultural land proposed for conservation in Cell #2253 to the east. Conservation within this Cell will range from 40%-50% of the Cell focusing in the southern portion of the Cell.
1   2253 07 NE Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 4. Conservation within this Cell will focus on agricultural land adjacent to the San Jacinto River. Areas conserved within this Cell will be connected to agricultural land proposed for conservation in Cell #2252 to the west and #2349 to the southwest. Conservation within this Cell will range from 10%-20% of the Cell focusing in the southwestern portion of the Cell.
1   2349 07 SW Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 4. Conservation within this Cell will focus on playas/vernal pool habitat and agricultural land adjacent to the San Jacinto River. Areas conserved within this Cell will be connected to playas/vernal pool habitat proposed for conservation in Cell Group I to the east and in Cell #2251 to the northwest and #2252 to the north, and to agricultural land proposed for conservation in Cell Group H to the south. Conservation within this Cell will range from 60%-70% of the Cell focusing in the western portion of the Cell.
1   2549 13 SE Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 4. Conservation within this Cell will focus on agricultural land adjacent to the San Jacinto River. Areas conserved within this Cell will be connected to agricultural land proposed for conservation in Cell Groups H to the north and F to the west and to playas/vernal pool habitat proposed for conservation in Cell Group G to the northwest. Conservation within this Cell will range from 25%-35% of the Cell focusing in the northwestern portion of the Cell.
1   2760 24 SW Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 4. Conservation within this Cell will focus on agricultural land and playas/vernal pool, riparian scrub, woodland, and forest habitat adjacent to the San Jacinto River. Areas conserved within this Cell will be connected to playas/vernal pool habitat and agricultural land proposed for conservation in Cell Group E to the north and to playas/vernal pool, riparian scrub, woodland, and forest habitat and agricultural land proposed for conservation in Cell Group D to the west. Conservation within this Cell will range from 10%-20% of the Cell focusing in the northwestern portion of the Cell.
1   2867 27 NE Conservation within this Cell will contribute to assembly of Proposed Extension of Existing Core 4. Conservation within this Cell will focus on playas/vernal pool habitat and agricultural land adjacent to the San Jacinto River. Areas conserved within this Cell will be connected to playas/vernal pool habitat and agricultural land proposed for conservation in Cell Groups B to the south, and C to the east. Conservation within this Cell will range from 40%-50% of the Cell focusing in the southeastern portion of the Cell.
SUBUNIT 2 - Lakeview Mountains West
2 L 2258 10 NW Conservation within this Cell Group will contribute to assembly of Proposed Constrained Linkage 20 and Proposed Noncontiguous Habitat Block 5. Conservation within this Cell Group will focus on a mosaic of habitat types including chaparral, coastal sage scrub, grassland, riparian scrub, woodland and forest habitat. Areas conserved within this Cell Group will be connected to chaparral and coastal sage scrub habitat proposed for conservation in Cell #2555, #2767 and Cell Groups N, O, P all to the west and in Cell Groups N and B' in the San Jacinto Valley Area Plan to the east, to riparian scrub, woodland and forest habitat and agricultural land proposed for conservation in Cell Group K to the north and to chaparral habitat proposed for conservation in Cell Group A', Cell #2663 and #2768 in the San Jacinto Valley Area Plan to the east and in Cell #3187 in the San Jacinto Valley Area Plan to the south. Conservation within this Cell Group will range from 65%-75% of the Cell Group.
2 L 2259 10 NE
2 L 2355 10 SW
2 L 2356 10 SE
2 L 2357 11 SW
2 L 2451 15 NW
2 L 2452 15 NE
2 L 2453 14 NW
2 L 2556 15 SW
2 L 2557 15 SE
2 L 2558 14 SW
2 L 2660 22 NW
2 L 2661 22 NE
2 L 2662 23 NW
2 L 2663 23 NE
2 L 2768 23 SE
2 L 2771 22 SW
2 L 2772 23 SW
2 L 2773 22 SE
2 L 2873 26 NE
2 L 2876 26 NW
2 L 2883 27 NW
2 L 2983 26 SW
2 L 2989 27 SW
2 L 3084 35 NW
2 L 3093 34 NW
2 M 2658 21 NW Conservation within this Cell Group will contribute to assembly of Proposed Noncontiguous Habitat Block 5. Conservation within this Cell Group will focus on chaparral and coastal sage scrub habitat. Areas conserved within this Cell Group will be connected to chaparral and coastal sage scrub habitat proposed for conservation in Cell #2554 and #2555 to the north and #2767 to the south, and to chaparral and Riversidean alluvial fan sage scrub habitat proposed for conservation in Cell #2753 to the south. Conservation within this Cell Group will range from 65%-75% of the Cell Group focusing in the eastern portion of the Cell Group.
2 M 2659 21 NE
2 N 2845 29 NE Conservation within this Cell Group will contribute to assembly of Proposed Noncontiguous Habitat Block 5. Conservation within this Cell Group will focus on chaparral, coastal sage scrub, and grassland habitat. Areas conserved within this Cell Group will be connected to chaparral, coastal sage scrub, and grassland habitat proposed for conservation in Cell #2753 and #2767 to the north and Cell Group L to the east, and to chaparral and coastal sage scrub habitat proposed for conservation in Cell Group O to the south. Conservation within this Cell Group will range from 60%-70% of the Cell Group focusing in the eastern portion of the Cell Group.
2 N 2879 28 NW
2 N 2880 28 NE
2 O 2965 29 SW Conservation within this Cell Group will contribute to assembly of Proposed Noncontiguous Habitat Block 5. Conservation within this Cell Group will focus on chaparral, coastal sage scrub, and grassland habitat. Areas conserved within this Cell Group will be connected to chaparral and coastal sage scrub habitat proposed for conservation in Cell Groups N to the north and P to the south and to coastal sage scrub and grassland habitat proposed for conservation in Cell Group L to the east. Conservation within this Cell Group will range from 70%-80% of the Cell Group focusing in the eastern portion of the Cell Group.
2 O 2967 29 SE
2 O 2974 28 SW
2 O 2980 28 SE
2 P 3082 32 NE Conservation within this Cell Group will contribute to assembly of Proposed Noncontiguous Habitat Block 5. Conservation within this Cell Group will focus on chaparral and coastal sage scrub habitat. Areas conserved within this Cell Group will be connected to chaparral and coastal sage scrub habitat proposed for conservation in Cell Group O to the north and in Cell #3078 to the west, to coastal sage scrub habitat proposed for conservation in Cell #3192 to the south, and to chaparral and Riversidean alluvial fan sage scrub proposed for conservation in Cell Group L to the east. Conservation within this Cell Group will range from 60%-70% of the Cell Group focusing in the eastern portion of the Cell Group.
2 P 3088 33 NW
2 P 3092 33 NE
2 Q 2849 30 NE Conservation within this Cell Group will contribute to assembly of Proposed Noncontiguous Habitat Block 5. Conservation within this Cell Group will focus on grassland and coastal sage scrub habitat. Areas conserved within this Cell Group will be connected to chaparral and grassland habitat proposed for conservation in Cell #3078 to the east and to coastal sage scrub habitat proposed for conservation in Cell #3186 also to the east. Conservation within this Cell Group will be approximately 5% of the Cell Group focusing in the eastern portion of the Cell Group.
2 Q 2964 30 SE
2 Q 2976 30 SW
2 Q 3074 36 NE
2 Q 3075 31 NW
2 Q 3077 31 NE
2 Q 3183 31 SW
2 Q 3184 31 SE
2   2554 16 SW Conservation within this Cell will contribute to assembly of Proposed Noncontiguous Habitat Block 5. Conservation within this Cell will focus on coastal sage scrub and chaparral habitat. Areas conserved within this Cell will be connected to coastal sage scrub and chaparral habitat proposed for conservation in Cell #2555 to the east and in Cell Group M to the south and southeast. Conservation within this Cell will range from 40%-50% of the Cell focusing in the eastern portion of the Cell.
2   2555 16 SE Conservation within this Cell will contribute to assembly of Proposed Noncontiguous Habitat Block 5. Conservation within this Cell will focus on coastal sage scrub and chaparral habitat. Areas conserved within this Cell will be connected to coastal sage scrub and chaparral habitat proposed for conservation in Cell #2554 to the west and in Cell Group M to the south and southwest. Conservation within this Cell will range from 60%-70% of the Cell focusing in the southern portion of the Cell.
2   2753 21 SW Conservation within this Cell will contribute to assembly of Proposed Noncontiguous Habitat Block 5. Conservation within this Cell will focus on chaparral, coastal sage scrub and Riversidean alluvial fan sage scrub habitat. Areas conserved within this Cell will be connected to chaparral, coastal sage scrub and Riversidean alluvial fan sage scrub habitat proposed for conservation in Cell #2767 to the east and to chaparral habitat proposed for conservation in Cell Group M to the north and northeast and in Cell Group N to the south and southeast. Conservation within this Cell will range from 40%-50% of the Cell focusing in the eastern portion of the Cell.
2   2767 21 SE Conservation within this Cell will contribute to assembly of Proposed Noncontiguous Habitat Block 5. Conservation within this Cell will focus on chaparral, coastal sage scrub and Riversidean alluvial fan sage scrub habitat. Areas conserved within this Cell will be connected to chaparral, coastal sage scrub and Riversidean alluvial fan sage scrub habitat proposed for conservation in Cell #2753 to the west and Cell Group N to the south and southwest, to chaparral and coastal sage scrub habitat proposed for conservation in Cell Group M to the north and northwest, and to chaparral habitat proposed for conservation in Cell Group L to the east and southeast. Conservation within this Cell will range from 75%-85% of the Cell focusing in the northern portion of the Cell, as well as the western and southern edges of the Cell.
2   3078 32 NW Conservation within this Cell will contribute to assembly of Proposed Noncontiguous Habitat Block 5. Conservation within this Cell will focus on chaparral, coastal sage scrub and grassland habitat. Areas conserved within this Cell will be connected to grassland and coastal sage scrub habitat proposed for conservation in Cell Group Q to the west and southwest, to chaparral, coastal sage scrub and grassland habitat proposed for conservation in Cell #3186 to the south, and to chaparral and coastal sage scrub habitat proposed for conservation in Cell Groups P to the east and O to the north and northeast. Conservation within this Cell will range from 55%-65% of the Cell focusing in the southern portion of the Cell as well as the northeastern corner of the Cell.
2   3186 32 SW Conservation within this Cell will contribute to assembly of Proposed Noncontiguous Habitat Block 5. Conservation within this Cell will focus on chaparral, coastal sage scrub and grassland habitat. Areas conserved within this Cell will be connected to coastal sage scrub and grassland habitat proposed for conservation in Cell Group Q to the west and northwest, to chaparral, coastal sage scrub, and grassland habitat proposed for conservation in Cell #3078 to the north, to chaparral and coastal sage scrub habitat proposed for conservation in Cell #3188 to the east, and to coastal sage scrub habitat proposed for conservation in Cell #3295 to the south. Conservation within this Cell will range from 60%-70% of the Cell focusing in the southwestern portion of the Cell.
2   3188 32 SE Conservation within this Cell will contribute to assembly of Proposed Noncontiguous Habitat Block 5. Conservation within this Cell will focus on chaparral and coastal sage scrub habitat. Areas conserved within this Cell will be connected to coastal sage scrub and grassland habitat proposed for conservation in Cell #3192 to the east, to chaparral and coastal sage scrub habitat proposed for conservation in Cell #3186 to the west, and to coastal sage scrub habitat proposed for conservation in Cell #3292 to the south and #3295 to the southwest. Conservation within this Cell will range from 35%-45% of the Cell focusing in the southeastern half of the Cell.
2   3192 33 SW Conservation within this Cell will contribute to assembly of Proposed Noncontiguous Habitat Block 5. Conservation within this Cell will focus on coastal sage scrub, chaparral and grassland habitat. Areas conserved within this Cell will be connected to coastal sage scrub habitat proposed for conservation in Cell Group P to the north and to chaparral and coastal sage scrub habitat proposed for conservation in Cell #3188 to the west. Conservation within this Cell will range from 10%-20% of the Cell focusing in the northwestern portion of the Cell.
2   3292 05 NE Conservation within this Cell will contribute to assembly of Proposed Noncontiguous Habitat Block 5. Conservation within this Cell will focus on coastal sage scrub habitat. Areas conserved within this Cell will be connected to coastal sage scrub habitat proposed for conservation in Cell #3295 to the west and to chaparral and coastal sage scrub habitat proposed for conservation in Cell #3188 to the north. Conservation within this Cell will range from 15%-25% of the Cell focusing in the northwestern portion of the Cell.
2   3295 05 NW Conservation within this Cell will contribute to assembly of Proposed Noncontiguous Habitat Block 5. Conservation within this Cell will focus on coastal sage scrub and grassland habitat. Areas conserved within this Cell will be connected to coastal sage scrub habitat proposed for conservation in Cell #3292 to the east and to chaparral and coastal sage scrub habitat proposed for conservation in Cell #3186 to the north and #3188 to the northeast. Conservation within this Cell will range from 65%-75% of the Cell focusing in the northern portion of the Cell.






3.3.9 Mead Valley Area Plan

This section identifies target acreages, applicable Cores and Linkages, Area Plan Subunits and Criteria for the Mead Valley Area Plan. For a summary of the methodology and map resources used to develop the target acreages and Criteria for the MSHCP Conservation Area, including this Area Plan, see Section 3.3.1.

Target Acreages

The target conservation acreage range for the Mead Valley Area Plan is 4,980 to 6,730 acres; it is composed of approximately 3,095 acres of existing Public/Quasi-Public Lands and 1,885 - 3,635 acres of Additional Reserve Lands. The City of Perris is located entirely within the Mead Valley Area Plan. The target acreage range within the City of Perris is 720 - 1,400 acres. The City of Perris target acreage is included within the 1,885 - 3,635 acre target conservation range on Additional Reserve Lands for the entire Mead Valley Area Plan.

Applicable Cores and Linkages

The MSHCP Conservation Area comprises a variety of existing and proposed Cores, Linkages, Constrained Linkages and Noncontiguous Habitat Blocks (referred to here generally as "Cores and Linkages"). The Cores and Linkages listed below are within the Mead Valley Area Plan. For descriptions of these Cores and Linkages and more information about the biologically meaningful elements of the MSHCP Conservation Area within the Mead Valley Area Plan, see Section 3.2.3, and MSHCP Volume II, Section A.

Cores and Linkages within Mead Valley Area Plan

Descriptions of Planning Species, Biological Issues and Considerations and Criteria for each Area Plan Subunit within the Mead Valley Area Plan are presented later in this section. These descriptions, combined with the descriptions of the Cores and Linkages referred to above, provide information about biological issues to be considered in conjunction with Reserve Assembly within the Mead Valley Area Plan. As noted in Section 3.1, the Area Plan boundaries established as part of the Riverside County General Plan were selected to provide an organizational framework for the Area Plan Subunits and Criteria. While these boundaries are not biologically based, unlike the Cores and Linkages, they relate specifically to General Plan boundaries and the jurisdictional boundaries of incorporated Cities and were selected to facilitate implementation of the MSHCP in the context of existing institutional and planning boundaries.

Area Plan Subunits

The Mead Valley Area Plan is divided into four Subunits. For each Subunit, target conservation acreages are established along with a description of the Planning Species, Biological Issues and Considerations, and Criteria for each Subunit. For more information regarding specific conservation objectives for the Planning Species, see Section 9.0. Subunit boundaries are depicted on the Cells and Cell Groupings map displays (Figures 3-18 and 3-19). Table 3-10 presents the Criteria for the Mead Valley Area Plan.

Subunit 1: Motte-Rimrock

Target acreage range for Additional Reserve Lands within Subunit: 315-590 acres

Cell Groups within this Subunit: A and B

Cells within this Subunit (not in a Cell Group): 2334, 2529 and 2633

Planning Species:

Biological Issues and Considerations:

Subunit 2: Gavilan Hills - East

Target acreage range for Additional Reserve Lands within Subunit: 485-1,015 acres

Cell Groups within this Subunit: C, D, E, F and H

Cells within this Subunit (not in a Cell Group): 2956, 3057 and 3060

Planning Species:

Biological Issues and Considerations: