Upper Santa Ana River Watershed Integrated Regional Water Management Plan January 2015 This page intentionally left blank. Integrated Regional Water Management Plan | Upper Santa Ana River Watershed Table of Contents Executive Summary .......................................................................................................................................... ES-1 Chapter 1 Regional Planning, Governance, Outreach and Coordination ....................................... 1-1 1.1 Introduction ........................................................................................................................................ 1-1 1.2 Purpose and Need for the IRWM Plan ...................................................................................... 1-1 1.3 Regional Governance and Stakeholder Involvement ......................................................... 1-2 1.3.1 Regional Water Management Group.................................................................................. 1-2 1.3.2 Governance Structure .............................................................................................................. 1-5 1.3.3 Stakeholder Identification and Involvement .................................................................. 1-5 1.3.4 Disadvantaged Community Outreach Coordination ................................................... 1-6 1.4 IRWM Plan Update Process ........................................................................................................... 1-6 1.4.1 Progress in Meeting the Objectives of the 2007 IRWM Plan ................................... 1-6 1.4.2 Public Participation .................................................................................................................. 1-9 1.4.3 Planning, Reports and Technical Analyses .................................................................... 1-9 1.5 Regional Coordination.................................................................................................................. 1-11 1.5.1 Coordination with Neighboring IRWM Regions and IRWM Planning .............. 1-11 1.5.2 IRWM Plan Relation to Local Water Planning and Land Use Planning ............ 1-14 1.6. Contents of the IRWM Plan ....................................................................................................... 1-15 Chapter 2 Region Description ......................................................................................................................... 2-1 2.1 Location ................................................................................................................................................. 2-1 2.2 Major Water-Related Infrastructure ........................................................................................ 2-2 2.2.1 Regional Water Supply Infrastructure .............................................................................. 2-2 2.2.2 State Water Project Facilities ................................................................................................ 2-2 2.2.3 State Water Contractors Facilities ...................................................................................... 2-3 2.2.4 Regional Flood Control Infrastructure.............................................................................. 2-4 2.3 Water Resource Management Agencies .................................................................................. 2-7 2.3.1 Water Supply Managers, Retailers and Wholesalers .................................................. 2-7 2.3.2 Flood Control Agencies ........................................................................................................ 2-15 2.3.3 Other Water Related Entities ............................................................................................. 2-15 2.4 Surface Hydrology .......................................................................................................................... 2-16 2.4.1 Natural Runoff .......................................................................................................................... 2-16 2.4.2 Imported Water ....................................................................................................................... 2-17 2.4.3 Wastewater ............................................................................................................................... 2-18 Table of Contents | i Upper Santa Ana River Watershed | Integrated Regional Water Management Plan 2.4.4 Surface Water Quality ........................................................................................................... 2-25 2.5 Groundwater Systems and Management ............................................................................. 2-29 2.5.1 Groundwater Basin Description ....................................................................................... 2-29 2.5.2 Recharge Area Programs ..................................................................................................... 2-39 2.5.3 Groundwater Quality............................................................................................................. 2-42 2.6 Ecological and Environmental Resources ............................................................................ 2-50 2.6.1 SAR Corridor ............................................................................................................................. 2-50 2.6.2 San Bernardino National Forest Land and Resource Management Plan……..2-51 2.6.3 U.S. Bureau of Land Management Area of Critical Environmental Concern ...................................................................................... 2-52 2.6.4 U.S. Army Corps of Engineers Wooly-Star Preserve Area ...................................... 2-53 2.6.5 Western Riverside County Multi-Species Habitat Conservation Plan .............. 2-53 2.6.6 Upper Santa Ana River Habitat Conservation Plan................................................... 2-53 2.6.7 Wash Plan Habitat Conservation Plan ........................................................................... 2-53 2.6.8 Unarmored Threespine Stickleback Shay ..................................................................... 2-54 2.7 Land Use and Agricultural Lands Stewardship .................................................................. 2-54 2.8 Population ......................................................................................................................................... 2-54 2.8.1 Historic Population and Housing Growth in the Plan Area ................................... 2-54 2.8.2 Future Population Growth in the USARW Region ..................................................... 2-57 2.9 Economic Condition and Social and Cultural Composition of the Region .............. 2-57 2.9.1 Disadvantaged Communities ............................................................................................. 2-58 2.9.2 Native American Tribes ....................................................................................................... 2-61 2.10 Climate ............................................................................................................................................. 2-61 2.10.1 Existing Climate .................................................................................................................... 2-61 2.10.2 Impacts and Effects of Climate Change ....................................................................... 2-61 Chapter 3 Water Budget .................................................................................................................................... 3-1 3.1 Data Sources ........................................................................................................................................ 3-1 3.2 Applied Water Demands ................................................................................................................ 3-3 3.2.1 Increase in Water Demand in Dry Years .......................................................................... 3-4 3.2.2 Reduced Demand Due to Conservation ............................................................................ 3-5 3.3 Water Supplies ................................................................................................................................... 3-5 3.3.1 Groundwater and Local Surface Water ............................................................................ 3-5 3.3.2 Imported Water ....................................................................................................................... 3-12 3.3.3 Recycled Water ........................................................................................................................ 3-14 ii | Table of Contents Integrated Regional Water Management Plan | Upper Santa Ana River Watershed 3.4 Water Budget Summary .............................................................................................................. 3-15 Chapter 4 Goals and Objectives ...................................................................................................................... 4-1 4.1 Introduction ......................................................................................................................................... 4-1 4.2 Water Management Objectives Development Process ...................................................... 4-1 4.2.1 Regional Needs Identification .............................................................................................. 4-1 4.2.2 Goals and Objectives Development .................................................................................... 4-6 4.3 Water Management Goals and Objectives ............................................................................... 4-7 4.3.1 Goal #1: Improve Water Supply Reliability .................................................................... 4-9 4.3.2 Goal #2: Balance Flood Management and Increase Stormwater Recharge .... 4-11 4.3.3 Goal #3: Improve Water Quality ...................................................................................... 4-11 4.3.4 Goal #4: Improve Habitat and Open Space .................................................................. 4-12 4.3.5 Prioritization of Objectives ................................................................................................. 4-12 4.4 Consistency with Statewide Objectives ................................................................................. 4-12 Chapter 5 Water Management Strategies ................................................................................................... 5-1 5.1 Consideration of Strategies ........................................................................................................... 5-1 5.2 Strategies for Implementing the IRWM Plan ......................................................................... 5-3 5.2.1 Strategies to Improve Water Supply Reliability ........................................................... 5-3 5.2.2 Strategies to Balance Flood Management and Increase Stormwater Recharge........................................................................................................ 5-7 5.2.3 Strategies to Improve Water Quality ................................................................................. 5-8 5.2.4 Strategies to Improve Habitat and Open Space .......................................................... 5-11 5.3 Integration of Water Management Strategies .................................................................... 5-13 5.3.1 Integration of Local Surface Water and Groundwater Resource Strategies .. 5-14 5.3.2 Integration of Stormwater Management, Flood Management, Water Supply Reliability, and Surface and Groundwater Quality .............................................................. 5-14 5.3.3 Integration of Water Supply and Reliability and Water Quality Strategies .... 5-14 5.3.4 Integration of Imported Water and Local Water Supplies and Strategies ...... 5-14 Chapter 6 Projects ................................................................................................................................................ 6-1 6.1 Project Submittal ............................................................................................................................... 6-1 6.2 Project Prioritization and Screening Process ........................................................................ 6-1 Chapter 7 Implementation ................................................................................................................................ 7-1 7.1 Continued Governance .................................................................................................................... 7-1 7.2 Project Implementation .................................................................................................................. 7-1 7.3 Periodic Review and Update of the IRWM Plan .................................................................... 7-2 Table of Contents | iii Upper Santa Ana River Watershed | Integrated Regional Water Management Plan 7.4 Continued Outreach and Coordination .................................................................................... 7-2 7.5 Support Statewide Priorities ........................................................................................................ 7-3 7.6 IRWM Plan Funding and Financing ........................................................................................... 7-3 7.6.1 Funding and Finance Options ............................................................................................... 7-4 7.6.2 Financing Plan ............................................................................................................................. 7-5 7.7 Obstacles to Implementation ....................................................................................................... 7-6 7.8 Impacts and Benefits of the USARW Region IRWM Plan .................................................. 7-7 7.8.1 IRWM Plan Benefits .................................................................................................................. 7-7 7.8.2 IRWM Plan Impacts .................................................................................................................. 7-8 7.8.3 Environmental Documentation and County Ordinance Compliance ................... 7-8 Chapter 8 Data Management, Plan Performance and Adaptive Management ............................ 8-1 8.1 IRWM Plan Performance ................................................................................................................ 8-1 8.2 Data Collection, Monitoring and Management ...................................................................... 8-4 8.2.1 Data Collection and Monitoring Efforts ............................................................................ 8-4 8.2.2 Data Management ...................................................................................................................... 8-5 8.3 Adaptive Management .................................................................................................................... 8-6 Chapter 9 References .......................................................................................................................................... 9-1 L ist of Appendices Appendix A – Upper Santa Ana River Watershed IRWM Region Outreach Materials Appendix B – Legal Agreements Appendix C – Disadvantaged Community Identification and Coordination Appendix D – 2012 DWR IRWM Plan Standards Form Appendix E – Greenhouse Gas Emissions Calculator Appendix F – Vulnerability to Catastrophic Interruption of Water Supply and Disaster Preparedness Appendix G – Climate Change Vulnerability Checklist Appendix H – Groundwater Flow Models Appendix I – State Water Project Peak Day Demands for Customers of the San Bernardino Valley Municipal Water District Appendix J – Project List iv | Table of Contents Integrated Regional Water Management Plan | Upper Santa Ana River Watershed List of Tables Table 1-1 Planning, Reports and Technical Analyses Used in the IRWM Plan Update ............ 1-8 Table 1-2 IRWM Plan Update Organization and Alignment with DWR Plan Standards ...... 1-17 Table 2-1 Upper SAR Median, Maximum , and Minimum Annual Flow ...................................... 2-16 Table 2-2 Tributary Flow Contribution to the SAR (100-Year Flood Event Discharge) ...... 2-17 Table 2-3 Treated Wastewater Discharged Directly to the SAR above Riverside Narrows2-21 Table 2-4 Upper Santa Ana River Water Agencies Recycled Water Programs ........................ 2-22 Table 2-5 303(d) Listed Water Bodies in the Upper SAR ................................................................. 2-26 Table 2-6 SAR Basin Surface Water Quality Objectives ..................................................................... 2-27 Table 2-7 Average Historic Surface Water Quality for Locations on the SAR .......................... 2-28 Table 2-8 Groundwater Basins in Upper Santa Ana Region ............................................................ 2-30 Table 2-9 Recharge Facilities ........................................................................................................................ 2-41 Table 2-10 Contaminants in SBBA Wells ................................................................................................. 2-45 Table 2-11 Contaminants in Rialto-Colton Subbasin Wells ............................................................. 2-47 Table 2-12 Contaminants in Riverside-Arlington Subbasin Wells................................................ 2-48 Table 2-13 Contaminants in San Timoteo Subbasin Wells............................................................... 2-48 Table 2-14 Contaminants in Yucaipa Subbasin Wells ........................................................................ 2-49 Table 2-15 Contaminants in Bear Valley Basin Wells ........................................................................ 2-49 Table 2-16 Contaminants in Big Meadows Valley Basin Wells....................................................... 2-50 Table 2-17 Riverside and San Bernardino County Population, 2000 and 2010...................... 2-54 Table 2-18 SCAG County Population Projections, 2020-2035 ........................................................ 2-57 ° Table 2-19 Current and Projected Population for the Region (2010-2035) ............................. 2-57 Table 2-20 Days per Year Exceeding 95 F .............................................................................................. 2-62 Table 3-1 Data Utilized in the Water Budget ............................................................................................ 3-2 Table 3-2 Future Applied Water Demands in the Region .................................................................... 3-3 Table 3-3 Region-wide Demands for Average and Drought Conditions........................................ 3-5 Table 3-4 Projected SBBA Local Surface Water Diversion and Groundwater Extractions .... 3-7 Table 3-5 Projected Extractions in the Rialto-Colton Subbasin ........................................................ 3-9 Table 3-6 Projected Extractions in the Riverside North Subbasin................................................ 3-10 Table 3-7 Projected Extractions in the Yucaipa Subbasin ................................................................ 3-10 Table 3-8 Projected Extractions of Other Groundwater and Surface Water Supplies .......... 3-12 Table 3-9 Projected Deliveries of State Water Project to the Region .......................................... 3-14 Table 3-10 Available State Water Supplies Based on Table A Amounts ..................................... 3-14 Table of Contents | v Upper Santa Ana River Watershed | Integrated Regional Water Management Plan Table 3-11 Projected Use of Recycled Water ......................................................................................... 3-15 Table 3-12 Water Budget Summary for Valley District and San Bernardino Mountains for an Average Year ............................................................................................................................................... 3-16 Table 3-13 Water Budget Summary for San Gorgonio Pass Water Agency Area .................... 3-17 Table 3-14 Water Budget Summary for Average Year ....................................................................... 3-17 Table 3-15 Water Budget Summary for Multi-Year Drought .......................................................... 3-17 Table 3-16 Water Budget Summary for a Single-Dry Year .............................................................. 3-17 Table 4-1 Upper SAR Watershed IRWM Region Objectives ................................................................ 4-8 Table 4-2 Comparison between IRWM Plan Objectives and Statewide Priorities ................. 4-13 Table 5-1 Water Resource Management Strategies ............................................................................... 5-2 Table 6-1 Project Scoring Criteria ................................................................................................................. 6-3 Table 7-1 Financing Plan ................................................................................................................................... 7-6 Table 8-1 Objectives and Performance Measures ................................................................................... 8-2 L ist of Figures Figure 1-1 Santa Ana River Watershed ....................................................................................................... 1-2 Figure 2-1 Major Water Supply Infrastructure ........................................................................................ 2-5 Figure 2-2 Water Agencies and Cities in the Upper Santa Ana River Watershed Region ....... 2-6 Figure 2-3: Creeks and Rivers in the USARW Region ......................................................................... 2-19 Figure 2-4 Groundwater Basins in the USARW Region ..................................................................... 2-31 Figure 2-5 SBBA Basin Area and Faults.................................................................................................... 2-35 Figure 2-6 SBBA Pressure Zones ................................................................................................................. 2-36 Figure 2-7 Spreading Grounds in the USARW Region ........................................................................ 2-43 Figure 2-8 Contaminant Plumes in the USARW Region .................................................................... 2-44 Figure 2-9 Land Use in the USARW Region ............................................................................................ 2-55 Figure 2-10 DACs in the USARW Region .................................................................................................. 2-59 Figure 3-1 Total Water Demands within the Region ............................................................................. 3-4 Figure 3-2 SBBA Water Budget ....................................................................................................................... 3-8 Figure 3-3 Region-wide Water Budget Summary for Average Year............................................. 3-18 Figure 4-1 Hierarchy of Goals, Objectives and Strategies .................................................................... 4-6 Figure 4-2 USARW Regional Goals ................................................................................................................ 4-7 Figure 5-1 Integrated Planning .................................................................................................................... 5-13 Figure 6-1 Upper SAR IRWM Plan Project Review Process ................................................................ 6-2 Fvii g| uTraeb 6le- 2o fP Claonnnteinngts P rocess for Project Screening and Ranking ............................... ...................... 6-4 Integrated Regional Water Management Plan | Upper Santa Ana River Watershed Figure 7-1 IRWM Plan Implementation Components ........................................................................... 7-1 Figure 7-2 Opportunities for Coordination Between Land Use Planning and Water Management ............................................................................................................................................. 7-3 Figure 7-3 IRWM Funding and Financing Activities .............................................................................. 7-4 Figure 8-1 Data Monitoring, Plan Performance and Adaptive Management Process .............. 8-1 Table of Contents | vii Upper Santa Ana River Watershed | Integrated Regional Water Management Plan Acronyms Acronym Definition ACEC Area of Critical Environmental Concern AF acre-foot AFY acre-feet per year AHHG area of historic high groundwater Association Upper Santa Ana Water Resources Association Basin Plan Water Quality Control Plan for the Santa Ana River Basin BBARWA Big Bear Area Regional Wastewater Agency BDCP Bay-Delta Conservation Plan Big Bear Municipal Big Bear Municipal Water District BLM U.S. Bureau of Land Management BMO Basin Management Objective BMP best management practice BTAC Basin Technical Advisory Committee CAP Customer Assistance Program CASGEM California Statewide Groundwater Elevation Monitoring CDPH California Department of Public Health CEQA California Environmental Quality Act cfs cubic feet per second CIS change in storage Cl Chloride COD Chemical Oxygen Demand CRA Colorado River Aqueduct CWP California Water Plan Update 2009 DACs Disadvantaged Communities DBCP debromochloropropane DEIR Application Draft Environmental Impact Report Delta Sacramento-San Joaquin Delta DMM Demand Management Measure DWR California Department of Water Resources EC Electrical conductivity Eastern Eastern Municipal Water District EPA Environmental Protection Agency ESA US Endangered Species Act ESRI Environmental Systems Research Institute Exchange Plan Santa Ana River-Mill Creek Cooperative Water Project Agreement Fontana Union Fontana Union Water Company GIS Geographic Information System HCP Upper Santa Ana River Habitat Conservation Plan HTROD Hazardous Tree Removal Operations Division IERCD The Inland Empire Resource Conservation District IEUA Inland Empire Utilities Agency viii | Acronyms