Section 6 IRWM Region Boundary

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6.1 San Diego Funding Area Boundary

This section addresses the following Reviewer questions:

• Does it appear that the IRWM region boundary was based solely on political boundaries? • Does the region boundary appear appropriate? • Does it appear that the IRWM region is structured to maximize opportunities to integrate water management activities related to natural and man-made water systems, including water supply reliability, water quality, environmental stewardship, and flood management?

The San Diego Funding Area (SDFA) boundary mirrors that of the San Diego Regional Water Quality Control Board (SDRWQCB) boundary. It comprises approximately 3,900 square miles in the southwestern corner of California.

The San Diego Funding Area encompasses most of San Diego County and parts of southwestern Riverside County and southern Orange County. The northern boundary lies in Orange County and is the hydrologic divide that extends from the ridge of the Elsinore Mountains to the coast north of Laguna Beach. The southern boundary is the United States – Mexico international border. The eastern boundary extends northerly along the hydrologic divide formed by the Laguna, Cuyamaca, Palomar, and Santa Ana Mountains located in the Cleveland National Forest. The western boundary parallels the coastline and extends north-south approximately 85 miles to the international border.

The 85 miles of coastline include the Pacific Ocean and various bays, harbors, coastal lagoons, estuaries, and river mouths. The natural water resources in the San Diego Funding Area can be classified as inland surface waters, ground waters, and coastal waters. The San Diego RWQCB Basin Plan identifies the beneficial uses of and water quality objectives for the waters in this region.

The San Diego Funding Area is comprised of eleven hydrologic units that originate in the highlands and flow west to the coast. These hydrologic units are further broken down into watersheds or hydrologic areas. From north to south these hydrologic units are covered by three IRWM Plans, as shown in Table 6.0. Six of the hydrologic units extend from the coast all the way to the eastern boundary of the San Diego Funding Area, about 50 miles inland. The other five hydrologic units extend some 10 to 25 miles inland from the coast.

As shown in Figure 6-1, and discussed in detail in question five, two Watershed Overlay Areas will be managed by a Tri-County FACC Overlay Subcommittee. The Overlay Subcommittee will identify cross-boundary projects and common programs for the San Mateo Creek and the Santa Margarita River watersheds.

A 6-1 Section 6 IRWM Region Boundary

Most of the streams in the San Diego Funding Area are interrupted in character, with both perennial and ephemeral components due to variable precipitation patterns and the construction of surface water impoundments. Many of the major surface water impoundments contain a blend of natural runoff and imported water, and may be supplemented by reclaimed water.

The major hydrologic units in the San Diego Funding Area contain groundwater basins, developed mostly for municipal and agricultural supply purposes. The basins are relatively small in area and generally shallow. Because of the movement of groundwater to the surface and the movement of surface water into the ground, pollutants present in groundwater may be transported into surface waters and vice versa.

Land uses in the lower portions of the watersheds often differ from those in the upper watersheds. This difference in land use can translate into differences in water quality and beneficial use problems. The Overlay Subcommittee will address this situation as part of its deliberations and project solutions.

The San Diego Funding Area has formed the Tri-County FACC to balance the necessary autonomy of each planning region to plan for itself at the appropriate scale with the need to coordinate among ourselves to improve inter-regional cooperation and efficiency. In addition, the Tri-County FACC will allow for coordination of opportunities to integrate water management activities related to natural and man- made water systems, including water supply, reliability, water quality, environmental stewardship, and flood management.

Table 6-1 San Diego Funding Area’s Hydrologic Units1 South Upper Santa Area Watersheds or Orange San Diego HU Name of HU Margarita (sq. miles) Hydrologic Areas County IRWMP IRWMP IRWMP Aliso Creek 9 San Juan Creek 9 901 San Juan 500 San Mateo Creek 9 9 San Onofre Creek 9 Santa Margarita 902 Santa Margarita River 750 9 9 River 903 San Luis Rey River 565 San Luis Rey River 9 Loma Alta Creek 9 Buena Vista Creek 9 Encinitas 9 904 Carlsbad 210 Aqua Hedionda 9 Creek San Marcos Creek 9 Escondido Creek 9 905 San Dieguito River 350 San Dieguito River 9 Los Peñasquitos 906 Peñasquitos 170 9 Creek

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Table 6-1 San Diego Funding Area’s Hydrologic Units1 South Upper Santa Area Watersheds or Orange San Diego HU Name of HU Margarita (sq. miles) Hydrologic Areas County IRWMP IRWMP IRWMP Rose Creek 9 Tecolote Creek 9 907 San Diego River 440 San Diego River 9 908 Pueblo 60 Chollas Creek 9 909 Sweetwater River 230 Sweetwater River 9 910 Otay River 160 Otay River 9 911 Tijuana River 470 Tijuana River 9 Adapted from basin descriptions presented in Water Quality Control Plan for the San Diego Basin (Regional Board 1994).

6.2 Upper Santa Margarita Planning Area Boundary

This section addresses the following Reviewer questions:

• Is it clear what the basis and rationale for the IRWM region boundary is?

The Upper Santa Margarita watershed is comprised of: Urban and suburban areas of moderate to lower density along the I-15 corridor including the cities of Murrieta and Temecula among others; rural residential and agricultural areas; and forest and open space. The majority of the population and water resources infrastructure has been developed in the urban-suburban and agricultural areas. Through coordination with the US Forest Service in cooperation with the Tri-County FACC, the Upper Santa Margarita Watershed “region” was expanded to the west to include forested open space to the west. This western area does not currently have developed water resources or identified water management needs, but completes coverage of the region—connecting the Upper Santa Margarita Planning Area.

As redefined, the Upper Santa Margarita Planning Area fully covers the Upper Santa Margarita and Upper San Mateo watershed areas and related areas as shown in Section 2 and Figure 6-1 of this RAP Application. With the watershed overlay areas the boundaries cover the rest of the watersheds through the Tri-County FACC. The watershed overlay areas allow for integration of the boundaries while reducing governance disruptions between counties and without over expanding the size of the planning area beyond stakeholder’s capacity to participate. This combination leads to the optimum use of existing institutions and planning and integration of water related programs. The stakeholders, the RAC and the Tri-County FACC all agreed to the boundary and process in endorsing and recommending RWMG approve the Tri- County FACC MOU. For a more complete description of the MOU see Section 5.4.2, (page 5-10 of this RAP Application). For more detail on the evaluation of the

A 6-3 Section 6 IRWM Region Boundary

alternative methods of boundaries and governance, see Section 8.2 (page 8-4 of this RAP Application) and Appendix D of this RAP Application. 6.3 Upper Santa Margarita Planning Area Water Management This section addresses the following Reviewer questions:

• Does the region boundary consider multiple water management boundaries? • Does the IRWM region encompass the service areas of multiple regions?

The Upper Santa Margarita Planning Area is a significant area as previously described in Section 2 of this RAP Application, and covers a number of water management boundaries, Major service area and water management boundaries include the Eastern and Western Municipal Water District Service Area as well as retail service in the cities of Temecula, Murrieta, and other water providers. Additionally Riverside County Flood Control and Water Conservation District provides flood management and water conservation management service to the area. The County of Riverside manages the Multi-species Habitat Conservation Plan, County parks and Open space and County Public Health which do not directly manage potable water but does manage considerable water related habitat or health and safety concerns. All of these are directly represented by the RWMG participants.

Planning Area stakeholders are described in Section 2-x (page 2-x of this RAP Application). Significant involvement from DAC stakeholders such as the Elsinore, Murrieta, Anza Resource Conservation District represented through SAC participation are integral to IRWMP planning, project selection, and implementation.

Rancho California Water District (RCWD) took the lead with the County of Riverside and the Riverside County Flood Control and Water Conservation District in development of an IRWMP for the upper portion of the Watershed (Figure 6-1). As shown on Figure 6-2, the IRWM boundary divides the Santa Margarita Hydrologic Unit along the county line and multiple individual hydrologic units are split between the upper and lower watershed. The Temecula Gorge and Santa Ana Mountains just south of the confluence of the Temecula and Murrieta Creeks in the upper watershed serve as a natural barrier between the lower and upper watersheds. Murrieta Creek and its tributaries drain approximately 222 square miles in the northwest portion of the upper watershed. Temecula Creek and its tributaries drain approximately 366 square miles with the upper portion of the watershed and almost all flows from the upper watershed pass through the Temecula Gorge.

With respect to political and jurisdictional boundaries, the IRWM boundary encompasses the service areas of multiple federal, state, and local agencies (Figure 6-3). Figure 6-3 shows the Regional Water Quality Control Board (RWQCB) boundary, which covers both the upper and lower Santa Margarita watershed. Since the IRWM boundary is along the county line, Riverside County agencies naturally

A 6-4 Section 6 IRWM Region Boundary

have jurisdiction at the county level. Thus, Riverside County Flood Control has the primary responsibility for flood control within the IRWM boundary, including maintenance of dams, flood basins, levees, open channels, and major underground storm drains.

Water is provided by four water districts within the IRWM boundary: Elsinore Valley Municipal Water District, Eastern Municipal Water District, Western Municipal Water District, and RCWD. Of the four water suppliers within the Santa Margarita Watershed, RCWD is the only supplier that is completely within the watershed. The other three are only partially in the watershed. Figure 6-4 depicts the watershed boundaries and the boundaries of the four water districts. Over the course of a long history of legal action with respect to water supply in the Santa Margarita Watershed, the rights to one third of the supply of surface waters and groundwater supporting surface water has been give in RCWD, and the other two-thirds to Camp Pendleton in the lower portion of the watershed, outside of the boundaries of the IRWM.

Surface waters listed as impaired are shown in Figure 6-5. Some of these waterways, including the Santa Margarita River, cross over the IRWM boundary.

Significant biological resources, as described in the Western Riverside Multi-Species Habitat Conservation Plan (MSHCP), are shown in Figure 6-6. The Upper Santa Margarita Watershed encompasses approximately the southern third of the area covered by the MSHCP. Since the IRWM boundary ends at the Riverside County line, the MSHCP provides an appropriate boundary within which the MSHCP policies for habitat conservation planning are applied.

Land use is shown in Figure 6-7, and trails and parks are shown in Figure 6-8. The County of Riverside’s land use policies and recommendations are applicable throughout the IRWM boundary.

Figure 6-9 shows population density within the IRWM boundary, while Figure 6-10 shows disadvantaged communities (DACs). The IRWM boundary does not cut across areas of higher population density. Further, DACs are located within the urban centers of Temecula and Murrieta, as well as the community of Anza and the tribal lands in the eastern portion of the IRWM boundary. 6.4 Opportunities for Integration

In addition to Section 6.1, this section explores the following Reviewer question further:

• Does it appear that the IRWM region is structured to maximize opportunities to integrate water management activities related to natural and man-made water systems, including water supply reliability, water quality, environmental stewardship, and flood management?

A 6-5 Section 6 IRWM Region Boundary

The intent of this IRWMP is to pave the way for greater watershed-wide coordination and management of water resources within the Santa Margarita Watershed as a whole, as well as adjoining watershed and regional planning and funding efforts. This IRWMP will result in a planning process for the upper watershed that examines the entire suite of water benefits including improved water supply reliability, protection and improvement of water quality, sustainability through environmental stewardship, promotion of multiple benefits, and promotion of integrated and regional planning. Ultimately, this IRWMP positions this region for integration of the upper and lower Santa Margarita watershed areas as well as neighboring San Diego, South Orange County, and Santa Ana watersheds – with a new foundation and opportunity for resolving long standing historical water conflicts and lawsuits. Common water management goals and strategies such as drought avoidance, water conservation, ecosystem restoration, water use efficiency (e.g., water recycling and sustainable agriculture), expansion of water storage and conjunctive management, and integrated flood management will increase specific project opportunities to leverage local partnerships and funding with state and federal support to create multiple-benefit projects resulting in win-win water management.

The Tri-County FACC is working to identify areas of cooperation and to align planning efforts both to increase efficiency and to better inform each planning area about the efforts and plans of the others. The Tri-County FACC will build a foundation that ensures sustainable water resources planning within the Funding Area by serving as an umbrella organization, allowing the three IRWM regions to coordinate water resources planning activities and pool resources. Because man-made water infrastructure systems are the key water management units in the Funding Area, the planning regions reflect this reality and cross-boundary watershed issues are addressed via a collaborative subcommittee process.

The three RWMGs will undertake coordinated planning within the Watershed Overlay Areas, which comprise the Santa Margarita River and San Mateo Canyon watershed areas. A Watershed Overlay Subcommittee will be organized to consider issues and develop projects pertaining to the Overlay Areas. Water resources projects and programs that may benefit from Funding Area-wide coordination, administration, funding, or support will be identified by the Tri-County FACC and/or Subcommittee. Projects within the Watershed Overlay Areas identified as valuable and benefiting from cross-boundary coordination will be recommended in the three IRWM project selection processes.

A current example of how the Upper Santa Margarita Planning Area is actively maximizing opportunities to integrate water management activities related to natural and man-made water systems, including water supply reliability, water quality, environmental stewardship, and flood management, is through drought avoidance leadership. The Upper Santa Margarita Planning Area will assist the State in meeting its goal of decreasing use by 20% by 2020. Opportunities and benefits to surrounding regions are significant. The IRWMP was developed taking on challenges to turn opportunities into drought avoidance practices. Between 2010 and 2030 the

A 6-6 Section 6 IRWM Region Boundary

percentage of water demands for a normal weather pattern met by recycled water for the service areas of Eastern Municipal Water District, Western Municipal Water District, and Rancho California Water District is expected to increase by 13% or by approximately 40,000 acre-feet per year over the period. Drought avoidance measures also in the IRWMP include conjunctive storage of imported water during wet years for use in dry years, groundwater recharge, improved agricultural water use efficiency, flood management, habitat improvements, and water quality protection and improvement. See Drought Avoidance Fact Sheet in Appendix C of this RAP Application.

A 6-7 Romoland Riverside Quail Valley Sun City Winchester Little Orange C Canyon Lake Lake ou Railroad C n k Indian o ty Reservoir e UPPER u Lake Elsinore re Diamond Wells n Lake C SANTA t s y g Valley MARGARITA El Toro Elsinore n MARGARITA Lake ri WATERSHED p Reservoir WATERSHED Hemet Reservoir Sedco Hills S 215 SAN MATEO ¨¦§ rm WATERSHED Lakeland a OVERLAY W Hog OVERLAY Village k

M Wildomar e Lake u Skinner e r r Coto ie t C ta Reservoir de Caza C n r Creek o e Tucalota s e l i H k am

Murrieta Hot Springs W eek ilto Murrieta is Cr n C rtrud Cahuilla ree a Ge k Sant UPPER Lake eek SANTA MARGARITA illa Cr WATERSHED Cahu sin PLANNING REGION San Juan k Ba e ker Temecula Riverside E k e al ek ld r W re Vail e Capistrano e ula C r C e C ec Lake re r m e ek z 15 Te Lake T k C e u § e reek ¨¦ C San r L m ilson s W C k e Tule Creek o o e e c t u Clemente i e D e t r la Lone n a Pechanga Creek C C a M i r t n e Pine a lb e s Case Springs i S Ross Lake r o k r e iv K o Reservoir Riverside County C R Lake ita c ar e R rg S 5 ob Ma k T Twin Lakes ¨¦§ la a Rainbow o e e C San Diego County r nt y e C m h C a o r o i r S Martin r t e h e r C t c u ek o u C a Reservoir A n la re h w C e u o k a LOWER o re d e SANTA C k Fallbrook re MARGARITA e WATERSHED k Jean Camp Lake PendletonO'Neill Lake North

Pacific Bonsall Chimney Lake Windmill Ocean Whelan Lake Guajome Valley Big Lake Lake Lake Santa Hideaway Center Lake Lake Margarita Henshaw Borrego Marsh Oceanside Hidden Springs Meadows

Figure 6-1 Upper Santa Margarita Planning Region LEGEND City San Mateo Watershed Overlay

Regional Highway Upper Santa Margarita Planning Region March 26, 2009

! ! ¤ State Highway ! !! Upper Santa Margarita Watershed Boundary ! ! 0512.5 0 ! ! ! ! CDM Major Street ! ! ! Lower Santa Margarita Watershed Boundary Data Sources: Riverside County Flood Control & Water Conservation District, ESRI Streets & Maps, USGS Miles National Hydrography Dataset. ! !! !! !! ! ! Homeland ! Romoland Hemet Mountain Center IIndiian Little !! Welllls Winchestterr W Quail !! Wi Lake Riv !! ersideC Valley !! Sun UPPER o nyon Lake UPPER Or u Ca ity k ange C n C e nd Lake t !! Lake e Diamo SANTA ou y r SANTA n sinore C alley Hemet t El ailroad s V El Toro y Lake R g MARGARITA ! in voir ! rvoir r Reser e Rese 215 p Elsinor ¨¦§ S WATERSHED Hog Trabuco Canyon WATERSHED !! ! edco Hills rm ! S a k Lake oro ! El T ! e

SAN MATEO W e

Reservoir Lakelland r C

WATERSHED marr Skinner o a n !! Viillllage M Wiilldom

o H u !! r am r eservoi s

i R k l il OVERLAY e i t Mission OVERLAY e alota Cre on tta Tuc Cr

W e !! C Anza ek Viejo Coto r Murrieta !! ee !! k a k ee ! de Caz Cr Cahuilla ! is ! rud UPPER ek ! ert Cre Las Flores ta G uilla San SANTA MARGARITA Cah 15 ¨¦§ WATERSHED Riverside Eld Temecula WATERSHED er C !! Lake ree sin ecula ek Vail k r Ba Tem PLANNINGCre REGION k lke PLANNINGula REGIONke ek e a ec La T Cre Lone e W em e ilson Tule Creek !! r T m W C e County n Juan k !! ine iverside Sa k c P R z e u e l Radec ano u e a str e r r Capi k L Cr eservoi r e Aguanga R unty nga Creek C iego Co e e Pecha e !! San D C r e b C D l k

State Highway ! ! !! ¤ ! !! Upper Santa Margarita Watershed Boundary 05102.5 Major Street ! ! ! !! Lower Santa Margarita Watershed Boundary CDM Tributary Data Sources: Riverside County Flood Control & Water Lakes and Reservoirs Creek Miles Conservation District, ESRI Streets & Maps, USGS National Hydrography Dataset. !! !! !! !! Homeland !! Romoland Hemet Mountain Center Indian !! Wells uail Winchester Q !! !! Valley Sun Riverside !! UPPER C UPPER o City Orange u !! Lake SANTA C n re SANTA Ramona o ty Elsino Indian El Toro un MARGARITA !! ty Reservation Trabuco Canyon ¨¦§215 WATERSHED !! !! !! Lakeland SAN MATEO mar !! Village Wildo WATERSHED !! Mission WATERSHED Anza !! Viejo COVERLAYoto Murrieta !! !! Caza Cahuilla ! de ! !! Las Flores UPPER Cahuilla Indian ¨¦§15 SANTA MARGARITA Reservation Temecula !! WATERSHED PLANNING REGION !! !! Radec y San Juan Riverside Count ano Aguanga Capistr Pechanga !! unty Indian San Diego Co San Reservation mente Cle !! bow Rain!! LOWER ¨¦§5 SANTA !! SANTA Mission Fallbrook Indian MARGARITA Reservation WATERSHED !! WATERSHED y Winterwarm Chimne Eagles Nest !! Camp Lake !! !! Pacific ndleton Rincon Pe !! North San Ysidro Bonsall !! !! Ocean !! Borrego Springs

!! Valley San Felipe !! Santa enter Hidden C Margarita !! Vista Meadows Marsh !!

Legend Figure 6-3 Land Managers and Jurisdictions Riverside County Flood Control County of Riverside Cleveland National Forest in Santa Margarita Watershed San Bernardino National Forest Department of Fish and Game Regional Conservation Authority State Lands Commission Department of Parks and Recreation Native American Reservation ¤ State of California Bureau of Land Management April 20, 2009 05102.5 CDM Data Sources: Riverside County Flood Control & Water Miles Conservation District, ESRI Streets & Maps, USGS National Hydrography Dataset. Romoland Riverside Quail Valley Sun City Winchester Little Orange C Canyon Lake Lake ou Railroad C n k Indian o ty Reservoir e UPPER u Lake Elsinore re Diamond Wells n Lake C SANTA t s y g Valley MARGARITA El Toro Elsinore n MARGARITA Lake ri WATERSHED p Reservoir WATERSHED Hemet Reservoir Sedco Hills S 215 SAN MATEO ¨¦§ rm WATERSHED Lakeland a OVERLAY W Hog OVERLAY Village k

M Wildomar e Lake u Skinner e r r Coto ie

t C ta Reservoir de Caza C n re ta Creek o Tucalo s e l i H k am

Murrieta Hot Springs W i Murrieta reek lton dis C C rtru Cahuilla ree a Ge k Sant UPPER Lake eek SANTA MARGARITA illa Cr WATERSHED Cahu sin PLANNING REGION San Juan k Ba e ker Temecula Riverside E k l k l e Wa ree Vail de Capistrano e r la C r C e u Lake C ec r r k m ee e z 15 Te Lake T k C u § e reek e ¨¦ C San r L m ilson s W C k e Tule Creek o o e e c Clemente t u i e D e t r la Lone n a Pechanga Creek C C a M i r t n e Pine a lb e s Case Springs i S Ross Lake r o k r e iv K o Reservoir Riverside County C R Lake ita c ar e R rg S 5 ob a k T Twin Lakes ¨¦§ la M Rainbow o e e Ch San Diego County r ta y e C m C n r r Sa Martin o o e ih e r C t u ek r to cu Cr a A n la h Reservoir w ee u o C k a LOWER o re d e SANTA C k Fallbrook re MARGARITA e WATERSHED k Jean Camp Lake PendletonO'Neill Lake North

Pacific Bonsall Chimney Lake Windmill Ocean Whelan Lake Guajome Valley Big Lake Lake Lake Santa Hideaway Center Lake Lake Margarita Henshaw Borrego Hidden Marsh Oceanside Springs Meadows

Figure 6-4 Water Districts in the LEGEND Upper Santa Margarita Watershed Fallbrook Public Utility District Planning Region City Murrieta County Water District Upper Santa Margarita Watershed Regional Highway San Mateo Watershed Overlay Rainbow Municipal Water District Planning Region State Highway City of Oceanside W.S.A. Rancho California Water District ¤ Major Street April 3, 2009 Eastern Municipal Water District Riverside County 0512.5 0 Santa Margarita Watershed Boundary Elsinore Valley Municipal Water District Western Municipal Water District CDM Data Sources: Riverside County Flood Control & Water Elsinore Water District Miles Conservation District, ESRI Streets & Maps, USGS National Hydrography Dataset. ! !! !! !! ! ! Homeland ! Romoland Hemet Mountain Center IIndiian Little !! Welllls Winchestterr W Quail !! Wi Lake Riv !! ersideC Valley !! Sun UPPER o nyon Lake UPPER Or u Ca ity k ange C n C e nd Lake t !! Lake e Diamo SANTA ou y r SANTA n sinore C alley Hemet t El ailroad s V El Toro y Lake R g MARGARITA ! in voir ! rvoir r Reser e Rese 215 p Elsinor ¨¦§ S WATERSHED Hog Trabuco Canyon WATERSHED !! ! edco Hills rm ! S a k Lake oro ! El T ! e

SAN MATEO W e

Reservoir Lakelland r C

WATERSHED marr Skinner o a n !! Viillllage M Wiilldom

o H u !! r am r eservoi s

i R k l il OVERLAY e i t Mission OVERLAY e alota Cre on tta Tuc Cr

Tuca la C l i u B h Ham 74 ¬« Murrieta a ilt Murrieta Hot Springs C on Cr ee k

F E ld e 7 Cr San Juan Capistrano Basin re er Temecula Wilson Cr ek Walk P e reek e ek c ha k e 6 n e e Creek Dana Point ga Tul G Cr San Clemente De Luz C eek lb Cr o M L K Riverside County , Arroyo Roblar Rainbow Cr Tem 5 eek §¨¦ ecul San Diego County Cre e Rainbow a Creek k Chihuahua Creek

Seco Creek Fallbrook

Camp Pendleton North

Pacific Bonsall Ocean

Camp Pendleton South Valley Center Oceanside Hidden Meadows Borrego Springs Vista Escondido Carlsbad Escondido

Upper Santa Margarita Major Street Watershed Boundary Figure 6-6 Habitat Cores in Santa Margarita Watershed ershed City June 5, 2007 Lower Santa Margarita Watershed Boundary Existing Habitat Core ¤ Regional Highway Proposed Habitat Core 0 2.5 5 10 Data Sources: Riverside County Flood Control & Water State Highway Miles Conservation District, ESRI Streets & Maps, USGS National Hydrography Dataset. ! !! !! !! ! ! Homeland ! Romoland Hemet Mountain Center IIndiian Little !! Welllls Winchestterr W Quail !! Wi Lake Riv !! ersideC Valley !! Sun UPPER o nyon Lake UPPER Or u Ca ity k ange C n C e nd Lake t !! Lake e Diamo SANTA ou y r SANTA n sinore C alley Hemet t El ailroad s V El Toro y Lake R g MARGARITA ! in voir ! rvoir r Reser e Rese 215 p Elsinor ¨¦§ S WATERSHED Hog Trabuco Canyon WATERSHED !! ! edco Hills rm ! S a k Lake oro ! El T ! e

SAN MATEO W e

Reservoir Lakelland r C

WATERSHED marr Skinner o a n !! Viillllage M Wiilldom

o H u !! r am r eservoi s

i R k l il OVERLAY e i t Mission OVERLAY e alota Cre on tta Tuc Cr

s o o o o e es t k t K c in La San i Tw a r e n Ross Lake e C M iv S T a s ente ring k e h Clem! i n Case Sp R i ! t e C m h a ita o u s S r y e o e i a r t c C a r ake L rg inbow o to u r h a Rain!!bo r C la e u C R r n e a ob a M w C k la nt A o r r C a LOWER o ee re S d k ¨¦§5 ek C SANTA re ! e ean ! k J Fallbrook MARGARITA Lake WATERSHED O'Neill Lake !! y Winterwarm Chimne Eagles Nest !! Camp Lake !! !! Pacific ton Rincon Pendle !! North San Ysidro Ocean Bonsall Lake !! !! !! Big indmill Borrego W Lake Lake Springs Hideaway enshaw Guajome H Lake Santa !! Valley San Felipe Whelan Lake !! Margarita Hidden Center Lake !! Marsh Meadows ! Figure 6-7 Land Use Characterization in Estate Residential Highest Density Residential Public Facilities Open Space Recreation EDR - Rural Community Very High Density Residential Mixed Use Policy Area Open Space Rural Santa Margarita Watershed Very Low Density Residential Commercial Retail Rural Residential Water VLDR - Rural Community Commercial Tourist Agriculture Mineral Resources April 20, 2009 Low Density Residential Commercial Office Agriculture/Open Space Indian Lands ¤ LDR - Rural Community Community Center Rural Desert CITY 05102.5 Medium Density Residential Light Industrial Rural Mountainous CDM Medium High Density Residential High Industrial Conservation Data Sources: Riverside County Flood Control & Water High Density Residential Business Park Conservation Habitat Miles Conservation District, ESRI Streets & Maps, USGS National Hydrography Dataset. ! !! !! !! ! ! Homeland ! Romoland Hemet Mountain Center IIndiian Little !! ellls inchestterr Wel ail ! Winc ake Qu ! !! L Valley Rivers !! Sun UPPER ideC yon Lake UPPER o Can City e u ! ond Lak Orange C n ! Lake Diam SANTA o ty lsinore Valley Hemet El Toro u E Railroad MARGARITA nt Lake ir MARGARITA !! y rvoir Reservo e Rese 215 Trabuco Canyon Elsinor ¨¦§ WATERSHED Hog !! o Hills !! ro Sedc Lake El To SAN MATEO !! Reservoir Lakelland WATERSHED ar inner ! lage Wiilldomar Sk ! Viilllage W H !! r am OVERLAY Reservoi ilt Mission OVERLAY on Cre !! Anza ek Viejo Coto Murrieta !! !! za !! de Ca Cahuilla UPPER !! Las Flores SANTA MARGARITA ¨¦§15 iverside Temecula WATERSHED R !! Vail Lake Temecula PLANNING REGION Lake Lone !! San Juan !! Pine Radec side County Capistrano Aguanga Reservoir River !! San Diego County n Twin Lakes Sa Lake nte rings Ross Clem!! e Case Sp Lake bow Raiin!!bow LOWER ¨¦§5 SANTA !! Jean Fallbrook MARGARITA Lake WATERSHED O'Neill Lake !! y Winterwarm Chimne Eagles Nest !! Camp Lake !! !! Pacific ton Rincon Pendle !! North San Ysidro Ocean Bonsall Lake !! go !! !! Big Borre prings indmill S W Lake Lake Guajome Hideaway Henshaw ke La Lake Santa !! Valley San Felipe Whelan !! Margarita Hidden Center Lake !! Marsh Meadows !

City Conservation Area Upper Watershed Boundary Figure 6-8 Trails and Parks in Trails Conservation Habitat Lower Watershed Boundary Santa Margarita Watershed Regional Highway Open Space Recreation ¤ April 20, 2009 State Highway Regional Parks 05102.5 Major Street National Forests CDM Data Sources: Riverside County Flood Control & Water Miles Conservation District, ESRI Streets & Maps, USGS National Hydrography Dataset. ! !! !! !! ! ! Homeland ! Romoland Hemet Mountain Center IIndiian Little !! Welllls Winchestterr W Quail !! Wi Lake Riv !! ersideC Valley !! Sun UPPER o nyon Lake UPPER Or u Ca ity k ange C n C e nd Lake t !! Lake e Diamo SANTA ou y r SANTA n sinore C alley Hemet t El ailroad s V El Toro y Lake R g MARGARITA ! in voir ! rvoir r Reser e Rese 215 p Elsinor ¨¦§ S WATERSHED Hog Trabuco Canyon WATERSHED !! ! edco Hills rm ! S a k Lake oro ! El T ! e

SAN MATEO W e

Reservoir Lakelland r C

WATERSHED marr Skinner o a n !! Viillllage M Wiilldom

o H u !! r am r eservoi s

i R k l il OVERLAY e i t Mission OVERLAY e alota Cre on tta Tuc Cr

e y ano Radec Riverside Count Capistr e k r e Aguanga e !! C r C iego County s o San D o e t t San i a

n Lake M Ross ente a rings Clem! i n Case Sp ! t a s S i ainbow r Lake R !! C LOWER ¨¦§5 SANTA !! Jean Fallbrook MARGARITA Lake WATERSHED O'Neill Lake !! y Winterwarm Chimne Eagles Nest !! Camp Lake !! !! Pacific ton Rincon Pendle !! North San Ysidro Ocean Bonsall Lake !! !! !! Big Windmill Borrego Lake s Lake Guajome Spring Hideaway Henshaw ke La Lake Santa !! Valley San Felipe Whelan !! Margarita Hidden Center Lake !! Marsh Meadows ! Median Household Income (MHI) Figure 6-10 Disadvantaged Communities in $37,995 ¤ April 20, 2009 05102.5 NOTE: While the USMC Camp Pendleton area is illustrated as a CDM disadvantaged area based on MHI, the area is a military base. Data Sources: Riverside County Flood Control & Water Camp Pendleton is operated by the federal government and would Miles Conservation District, ESRI Streets & Maps, USGS not be considered a disadvantaged community. National Hydrography Dataset.