11. City of Escondido
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Draft San Diego Regional Agricultural Water Management Plan Part I January 2016 Prepared for: San Diego County Farm Bureau Prepared by: Ken Weinberg Water Resources Consulting LLC Bill Jacoby Water Resources Consulting 1 Cover Photo Credit: County of San Diego General Plan, Chapter 2 Visioning Document 2 Draft San Diego Regional Agricultural Water Management Plan: Part I Draft San Diego Regional Agricultural Water Management Plan January 2016 Prepared for: San Diego County Farm Bureau on behalf of the following Participating Agencies Valley Center Municipal Water District Rainbow Municipal Water District Carlsbad Municipal Water District City of Escondido City of Oceanside City of Poway Fallbrook Public Utilities District Olivenhain Municipal Water District Ramona Municipal Water District Rincon del Diablo Municipal Water District San Dieguito Water District Santa Fe Irrigation District Vallecitos Water District Yuima Municipal Water District Prepared by: Ken Weinberg Water Resources Consulting LLC Bill Jacoby Water Resources Consulting 3 Draft San Diego Regional Agricultural Water Management Plan: Part I This page intentionally left blank Draft San Diego Regional Agricultural Water Management Plan: Part I Contents 0 Preface to Part I Regional Planning ............................................................................ 0-1 0.1 San Diego Regional Agricultural Water Management Plan ........................ 0-2 0.2 San Diego County Farm Bureau .................................................................. 0-4 0.3 San Diego Agriculture and Imported Water: Historic Perspective ............. 0-5 0.4 Water Use Efficiency and Supply Diversification .........................................0-7 0.5 Plan Organization..........................................................................................0-7 0.6 Acknowledgements ...................................................................................... 0-8 1 Introduction ................................................................................................................... 1-1 1.1 Overview ........................................................................................................ 1-1 1.2 Plan Approach ............................................................................................... 1-2 1.3 Participating Entities .................................................................................... 1-2 1.4 Purpose .......................................................................................................... 1-3 1.4.1 Background on Requirement for San Diego RAWMP ........................................................ 1-3 1.4.2 Plan Development ................................................................................................................. 1-7 1.5 Coordination Activities ................................................................................. 1-9 1.6 Plan Adoption and Submittal ...................................................................... 1-10 2 Regional Description and History ................................................................................ 2-1 2.1 Overview ........................................................................................................ 2-1 2.2 History ........................................................................................................... 2-3 2.3 San Diego Agriculture Today ........................................................................ 2-7 3 Water Management Facilities ...................................................................................... 3-1 3.1 Regional Facilities ......................................................................................... 3-1 3.1.1 Water Conveyance ................................................................................................................ 3-1 3.1.2 Water Storage ....................................................................................................................... 3-5 5 Draft San Diego Regional Agricultural Water Management Plan: Part I 3.1.3 Water Treatment ................................................................................................................... 3-7 3.1.4 Hydroelectric Generation .................................................................................................... 3-8 3.2 Drainage Facilities ........................................................................................ 3-9 3.3 Flood Control and Management ................................................................ 3-10 4 Terrain and Soils ........................................................................................................... 4-1 4.1 Overview ....................................................................................................... 4-1 4.2 Soil Groups .................................................................................................... 4-2 4.3 Characteristics Typical of Region’s Irrigated Agriculture ............................ 4-5 5 Climate ........................................................................................................................... 5-1 5.1 Regional Precipitation and Temperature ...................................................... 5-1 5.1.1 El Niño/La Niña Effects on Precipitation ...........................................................................5-4 5.2 Evapotranspiration ....................................................................................... 5-4 6 Operational Characteristics ......................................................................................... 6-1 6.1 Operating Rules and Regulations ................................................................. 6-1 6.1.1 Rules and Regulations Affecting Water Availability ........................................................... 6-1 6.1.2 Water Delivery Measurements............................................................................................ 6-3 6.2 Water Pricing ................................................................................................ 6-5 7 Regional Water Shortage Allocation Policies ............................................................. 7-1 7.1 Overview ........................................................................................................ 7-1 7.2 Water Shortage and Drought Response Plan ................................................ 7-1 7.3 Drought Response Matrix ............................................................................ 7-2 7.3.1 M&I Supply Allocation Methodology .................................................................................. 7-3 7.3.2 Agricultural Supply Allocation Methodology (TSAWR) ..................................................... 7-4 7.3.3 Model Drought Response Conservation Ordinance ........................................................... 7-5 7.3.4 Use of Penalty Rates ............................................................................................................. 7-6 7.4 SDCWA Dry-Year Supplies and Carryover Storage ..................................... 7-7 7.4.1 SDCWA Carryover Storage Program ................................................................................... 7-7 Draft San Diego Regional Agricultural Water Management Plan: Part I 7.4.2 Utilization of Carryover Storage Supplies .......................................................................... 7-9 7.4.3 SDCWA Dry-Year Transfer Program .................................................................................. 7-9 8 Water Use ....................................................................................................................... 8-1 8.1 Overview ........................................................................................................ 8-1 8.2 Agricultural Use ............................................................................................ 8-1 8.3 Municipal and Industrial ............................................................................. 8-5 8.3.1 Residential Demand ............................................................................................................ 8-5 8.3.2 Commercial and Industrial Demand .................................................................................. 8-6 8.3.3 M& I Water Use .................................................................................................................... 8-6 8.4 Environmental .............................................................................................. 8-7 8.5 Recreational .................................................................................................. 8-7 8.6 Groundwater Recharge ................................................................................. 8-7 8.7 Other Uses ..................................................................................................... 8-7 9 Water Supplies and Hydrology .................................................................................... 9-1 9.1 Overview ........................................................................................................ 9-1 9.2 Surface Water ................................................................................................ 9-1 9.2.1 Local Surface Water ............................................................................................................. 9-2 9.2.2 Imported Surface Water .....................................................................................................