Water Resources Association of Yolo County Storm Water Resource Plan for Yolo County January 2018 Table of Contents Table of Contents Section 1: Introduction and SWRP Objectives ............................................................ 1-1 1.1 Plan Development ....................................................................................................................................... 1-1 1.1.1 Relation to Other Planning Efforts ...................................................................................... 1-1 1.2 SWRP Objectives .......................................................................................................................................... 1-6 1.2.1 Westside IRWM Plan Objectives .......................................................................................... 1-6 1.2.2 SWRP Objectives .......................................................................................................................... 1-7 1.4 Plan Organization...................................................................................................................................... 1-13 Section 2: Watershed Identification ............................................................................. 2-1 2.1 Surface Water Resources ......................................................................................................................... 2-1 2.1.1 Hydrologic Boundary ................................................................................................................. 2-1 2.2 Groundwater Resources ........................................................................................................................... 2-5 2.3 Land Use Description ................................................................................................................................. 2-5 2.3.1 Communities .................................................................................................................................. 2-6 2.3.2 Water and Wastewater Service Providers ....................................................................... 2-6 2.3.3 Other Land Use Agencies ........................................................................................................ 2-6 2.4 Watershed Management IssuesDRAFT ........................................................................................................... 2-6 2.4.1 Habitat and Invasive Species ................................................................................................. 2-6 2.4.2 Infrastructure Protection ....................................................................................................... 2-21 2.4.3 Flood Management and Other Natural Disasters .................................................... 2-22 2.4.4 Climate Change ......................................................................................................................... 2-22 2.4.5 Water Quality .............................................................................................................................. 2-23 2.4.6 Sustaining Groundwater Resources ................................................................................ 2-23 2.4.7 Land Use ........................................................................................................................................ 2-24 Section 2: Watershed Identification ............................................................................. 2-1 2.1 SurfaceFINAL Water Resources ....................................................................................................... .................. 2-1 2.1.1 Hydrologic Boundary ................................................................................................................. 2-1 2.2 Groundwater Resources ........................................................................................................................... 2-5 2.3 Land Use Description ................................................................................................................................. 2-5 2.3.1 Communities .................................................................................................................................. 2-6 2.3.2 Water and Wastewater Service Providers ....................................................................... 2-6 2.3.3 Other Land Use Agencies ........................................................................................................ 2-6 2.4 Watershed Management Issues ........................................................................................................... 2-6 2.4.1 Habitat and Invasive Species ................................................................................................. 2-6 2.4.2 Infrastructure Protection ....................................................................................................... 2-21 2.4.3 Flood Management and Other Natural Disasters .................................................... 2-22 2.4.4 Climate Change ......................................................................................................................... 2-22 2.4.5 Water Quality .............................................................................................................................. 2-23 2.4.6 Sustaining Groundwater Resources ................................................................................ 2-23 Storm Water Resource Plan for Yolo County, January 2018 i Table of Contents 2.4.7 Land Use ........................................................................................................................................ 2-24 Section 3: Water Quality Compliance ........................................................................... 3-1 3.1 Activities Associated with Pollution of Stormwater and/or Dry Weather Runoff ................................................................................................................................................................. 3-1 3.2 TMDL and NPDES Compliance ............................................................................................................. 3-2 3.2.1 TMDLs ................................................................................................................................................ 3-2 3.2.2 NPDES Permits .............................................................................................................................. 3-7 3.3 Other Permits .............................................................................................................................................. 3-11 3.3.1 WDRs ............................................................................................................................................... 3-12 3.3.2 California Health and Safety Code – Pest and Mosquito Abatement ........... 3-12 3.3.3 Modification of a River or Stream Channel ................................................................. 3-12 3.4 Monitoring .................................................................................................................................................... 3-13 3.4.1 Statewide Databases ............................................................................................................... 3-13 3.4.2 Yolo County Irrigated Lands Program (ILP) ................................................................. 3-13 3.4.3 Other Monitoring Programs ............................................................................................... 3-14 Section 4: Organization, Coordination, Collaboration ................................................ 4-1 4.1 Local Agencies and Non-Governmental Organizations .......................................................... 4-1 4.1.1 Yolo Subbasin Groundwater Agency ................................................................................ 4-1 4.2 State and Federal Agencies .................................................................................................................... 4-3 4.3 Community Participation ......................................................................................................................... 4-3 4.3.1 Other SWRP Areas....................................................................................................................... DRAFT 4-3 4.4 Plan Implementation .................................................................................................................................. 4-3 Section 5: Identification & Prioritization of Projects ..................................................... 1 5.1 Project Solicitation and Review Process ................................................................................................ 1 5.1.1 Initial Project Screening ................................................................................................................. 1 5.2 SWRP Objectives and Benefits ................................................................................................................ 13 5.3 Evaluation and Prioritization of Projects ............................................................................................. 19 5.3.1 Scoring Category 1 - Project Funding and Land Availability ................................... 20 5.3.2FINAL Scoring Category 2 - SWRP Multiple Benefits Analysis ............................................. 20 5.3.3 Scoring Category 3 - SWRP Quantitative Benefit Metrics Analysis .....................