Final Integrated Regional Water Management Plan for the Upper Santa Margarita Watershed Planning Region July 31, 2007

Transcription

1 Final Integrated Regional Water Management Plan for the Upper Santa Margarita Watershed Planning Region July 31, 2007 pplicant: Rancho California Water District Submitted for IRWM Implementation Grant, Round 2, Step 1 PIN: Prepared by: Rancho California Water District, Riverside County Flood Control and Water Conservation District, County of Riverside, and Stakeholder dvisory Committee

2 Integrated Regional Water Management Plan for the Upper Santa Margarita Watershed Planning Region Final July 31, 2007 Prepared for: Rancho California Water District Winchester Road Temecula, C nd Riverside County County dministration Center 4080 Lemon Street Riverside, C Prepared by: 523 West Sixth Street, Suite 400 Los ngeles, California Project No

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4 Contents pproval of IRWMP...X Executive Summary... ES-1 Section 1 Introduction Background IRWMP Process Memorandum of Understanding Use of Existing Plans Stakeholder Involvement Participation in Other Regional Plans Rancho California Water District Integrated Resources Plan Participation in Other Regional Plans Santa Margarita River Watershed Management Plan San Diego IRWMP Institutional Framework Stakeholder dvisory Committee Stakeholder Outcomes Section 2 Region Description Introduction Regional Boundaries Physical Boundaries Climate within the Watershed Internal Boundaries Water Supply Sources Water Supply Sources by Water District RCWD EMWD WMWD EVMWD Water Supply by Source Surface Water Groundwater Recycled Water Water Demand and Supply Projections Population Projections Water Demand Projections Methodology Results Water Supply Projections Water Quality Existing Water Quality and Water Quality Objectives Constituents of Concern i SM RWMP Final Cover Sheet, TOC, pproval.doc

5 Contents (continued) Rainbow Creek Nutrient TMDL dditional Water Quality Related Issues Ecological and Environmental Processes Bioregions of the Upper Santa Margarita Watershed Santa na Mountains and gua Tibia Mountains Bioregions Riverside Lowlands Bioregion San Jacinto Foothills Bioregion San Jacinto Mountains Bioregion Desert Transition Bioregion Sensitive Habitat and Species Existing Core G (4,500 acres) Existing Core J (9,610 acres) Existing Core K (149,750 acres) Existing Core L (24,750 acres) Existing Core M (10,460 acres) Proposed Cores quatic Resources Land Uses Open Space Recreation Parks Wine Region Social Characteristics Economic Conditions and Trends Disadvantaged Communities Housing Employment Section 3 IRWMP Objectives and Priorities Planning Objectives for the Region Managing Conflicts and Diversity Determination Methodology Regional Priorities and Goals Short Term Long Term Statewide Priorities California Water Plan Proposition 50 Guidelines Planning Targets Section 4 Regional Water Management Strategies Water Management Strategies Upper Santa Margarita Watershed Region Strategies Integrated to Meet Planning Objectives and Planning Targets Strategies that Develop a More Reliable and Diverse Portfolio of Water Supplies (WS) Water Supply Targets ii SM RWMP Final Cover Sheet, TOC, pproval.doc

6 Contents (continued) Strategies that Promote Economic, Social, and Environmental Sustainability (SUS) Strategies that Improve Water Quality (WQ) Strategies that Restore, Enhance and Maintain Habitats and Open Space (HB) Habitat and Open Space Targets Strategies that Promote Sustainable Floodplain Management (FLP) Strategies that Promote ppropriate Recreational Opportunities (REC) Recreation Planning Targets Strategies that Promote ppropriate Land Use Planning (LU) Land Use Planning Targets Strategies that Increase Stakeholder Involvement and Stewardship (SS) Stakeholder Involvement and Stewardship Targets Strategies that Maximize Implementation of Water Resources Projects (IMP) Implementation of Water Resources Projects Planning Targets Highly Integrated Regional Projects Benefits and Impacts within the Region Benefits and Impacts within djacent Regions Benefits and Impacts to Disadvantaged Communities and Environmental Justice Impacts to Environmental and Other Resources Benefits of Integration and Future Projects Section 5 Recommended Regional Implementation Plan Introduction Implementation Framework Projects Fulfilling Regional Objectives and Priorities Existing or Current Studies Responsible gencies Technical Feasibility Economic Feasibility Status Timeline Technical nalysis Governance Coordination with Local, Regional and Statewide Plans Coordination with Future Land Use Planning Project Monitoring and Performance Plan Data Management Funding CEQ Compliance iii SM RWMP Final Cover Sheet, TOC, pproval.doc

7 Contents (continued) 5.12 IRWMP Schedule ppendices ppendix Project Nomination Forms ppendix B Stakeholder Meeting Minutes ppendix C Stakeholders ppendix D Letters of Support ppendix E Memorandums of Understanding ppendix F CEQ Notice of Exemption ppendix G Response to Comments Received on Public Review Draft List of Figures Figure 1-1 Regional Location of Santa Margarita Watershed Figure 1-2 Santa Margarita Watershed Figure 1-3 Upper Santa Margarita Watershed IRWMP Organizational Structure Figure 2-1 Santa Margarita Watershed Figure 2-2 Water Features in Santa Margarita Watershed Figure 2-3 Land Managers and Jurisdictions in the Santa Margarita Watershed Figure 2-4 Water Districts in Santa Margarita Watershed Figure verage nnual Water Supplies for RCWD Figure 2-6 Major California Water Systems Figure 2-7 Impaired Waterbodies in Santa Margarita Watershed Figure 2-8 Habitat Cores in Santa Margarita Watershed Figure 2-9 Land Use Characterization in the Santa Margarita Watershed Figure 2-10 Land Use Characterization in the Santa Margarita Watershed Figure 2-11 Population Density in Santa Margarita Watershed Figure 2-12 Disadvantaged Communities in Santa Margarita Watershed Figure 2-13 Riverside County Housing Trends Figure 2-14 Riverside County Employment Trends Figure 4-1 Priority Project Locations in Santa Margarita Watershed Figure 5-1 Implementation Framework Figure 5-2 IRWMP Plan Schedule iv SM RWMP Final Cover Sheet, TOC, pproval.doc

8 Contents (continued) List of Tables Table 1-1 ctive Stakeholders in the Santa Margarita Watershed Table 1-2 Upper Santa Margarita Watershed IRWMP Stakeholders Table 2-1 Representative Climate Data for the Upper Watershed rea Table 2-2 Relationship of General Plan Policies to IRWMP Objectives Table 2-3 RCWD Planned Water Supplies (F/Y) Table 2-4 EMWD Planned Water Supplies (F/Y) Table 2-5 WMWD Planned Water Supplies (F/Y) Table 2-6 EVMWD Planned Water Supplies (F/Y) Table 2-7 Upper Santa Margarita Watershed Population Projections by City Table 2-8 Upper Santa Margarita Watershed Water Demands and Population Projections Table 2-9 Total Population Upper Santa Margarita Watershed Table 2-10 verage per Capita Water Demand in Upper Santa Margarita Watershed Table 2-11 Upper Santa Margarita Watershed Demands Table 2-12 Groundwater Beneficial Uses Table 2-13 Surface Water Beneficial Uses Table 2-14 Water Quality Objectives Table 4-1 Strategies Relationship to Upper Santa Margarita Region Planning Objectives Table 4-2 IRWMP Project Matrix Table 4-3 Potential Environmental Impacts of IRWMP Projects Table 5-1 Recent Studies Table 5-2 Summary of gencies, Jurisdictions and Organizations for Future Involvement with IRWMP Projects Table 5-3 IRWMP Priority Project Timeline Table 5-4 IRWMP Relation to Local and Regional Plans Table 5-5 Relation to Statewide Planning Documents Table 5-6 IRWMP Relation to Land Use Planning Table 5-7 Statewide Data Programs Table 5-8 Potential Funding Opportunities Table 5-9 Priority Project Funding Plan( Projects Ranked in Order of Priority) Table 5-10 Priority Project CEQ Status Table 5-11 IRWMP Implementation Steps v SM RWMP Final Cover Sheet, TOC, pproval.doc

9 List of cronyms F/Y SBS CETP cfs County CR CVP CWC DFG DHS EMRCD ETo EVMWD EMWD F FMP GRRP IB IID IRP IRWMP MCL mgd acre feet per year reas of Special Biological Significance Community and Environmental Transportation cceptability Process cubic feet per second County of Riverside Colorado River queduct Central Valley Water Project California Water Code Department of Fish and Game Department of Health Services Elsinore Murrieta nza Resource Conservation District evapotranspiration Elsinore Valley Municipal Water District Eastern Municipal Water District Fahrenheit Framework Monitoring Plan groundwater recharge reuse project Important Bird rea Imperial Irrigation District Integrated Regional Plan Integrated Regional Water Management Plan Maximum Contaminant Level million gallons per day vi SM RWMP Final Cover Sheet, TOC, pproval.doc

10 Contents (continued) mg/l ug/l MHI Mills MOU MSHCP MTBE MWD NDM NPDES RC RCFC RCHC RCIP REMP RCWD Reclamation RWC RWMG RWQCB SC SMP SCG Skinner SRWRF milligrams per liter micrograms per liter median household income Henry J. Mills Memorandum of Understanding Multi-Species Habitat Conservation Plan methyl tert-butyl ether Metropolitan Water District of Southern California N-Nitrosodimethylamine National Pollution Discharge Elimination System Regional dvisory Committee Riverside County Flood Control and Water Conservation District Riverside County Habitat Conservation gency Riverside County Integrated Project Riverside Extended Mountain Plan Rancho California Water District Bureau of Reclamation recycled water contribution Regional Water Management Group Regional Water Quality Control Board Stakeholder dvisory Committee Special rea Management Plan Southern California ssociation of Governments Robert F. Skinner Santa Rosa Water Reclamation Facility vii SM RWMP Final Cover Sheet, TOC, pproval.doc

11 SSO SWP TDS Title 22 TMDL TOC TVRWRF U USFWS USMC UWMP VDC WMWD WSDM Site-Specific Objective State Water Project total dissolved solids California Title 22 Drinking Water Standards total maximum daily load total organic carbon Temecula Valley Regional Water Reclamation Facility Use ttainability nalysis U.S. Fish and Wildlife Service U.S. Marine Corps Urban Watershed Management Plan Valle de los Caballos Western Municipal Water District Water Surplus and Drought Management Plan viii SM RWMP Final Cover Sheet, TOC, pproval.doc

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13 THE UPPER SNT MRGRIT WTERSHED INTEGRTED REGIONL WTER MNGEMENT PLN PPROVL In accordance with the Memorandum of Understanding ("MOU") entered into by unanimous board approval on June 26, 2007 by the RIVERSIDE COUNTY FLOOD CONTROL ND WTER CONSERVTION DISTRICT, hereinafter called "DISTRICT", the COUNTY OF RIVERSIDE, hereinafter called "COUNTY", and on July 12, 2007 by the RNCHO CLIFORNI WTER DISTRICT, hereinafter called "RC WD". The DISTRICT, COUNTY, and RCWD, hereinafter collectively "GENCIES", have worked collaboratively with the stakeholders of the Upper Santa Margarita Watershed in Riverside County to complete preparation of the first IRWM Plan for the geographic area. The GENCIES have participated in the entire planning process in accordance with the MOU and have reviewed and agreed on the goals objectives and projects included in this IRWM plan which contains significant major public infrastructure and conservation projects. The GENCIES have noticed and held hearings for preparation and approval of the IRWM plan and implementation application. The GENCIES collectively and with the Stakeholder dvisory Committee in accordance with the MOU approve the referenced Integrated Regional Water Management Plan for the Upper Santa Margarita Watershed and proceed to seek funding of included projects by application for funding in Proposition 50 Chapter 8, Round 2.

14 RIVERSIDE COUNTY FLOOD CONTROL ND WTER C NSERVTION DISTRIC B 2 ~ J ~ a July 31,2007 t e WRREN D. WILLIMS General Manager-Chief Engineer Date July Riverside COW& Executive Officer RNCHO CLIFORNI WTER DISTRICT BY Date July 3 1,2007 General Manager