Final 2020 Agricultural Water Management Plan (AWMP)
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Final 2020 Agricultural Water Management Plan (AWMP) Kern Delta Water District March 2021 KERN DELTA WATER DISTRICT 2020 Agricultural Water Management Plan FINAL March 19, 2021 2490 Mariner Square Loop, Suite 215 Alameda, CA 94501 510.747.6920 www.toddgroundwater.com Table of Contents 1 Plan Preparation and Adoption .................................................................................... 1 1.1 Previous Water Management Activities .............................................................. 1 1.2 Coordination Activities ....................................................................................... 2 1.3 AWMP Adoption, Submittal and Availability ....................................................... 3 1.4 AWMP Implementation Schedule ....................................................................... 4 1.5 AWMP Checklist ................................................................................................. 4 2 Description of KDWD and Service Area ........................................................................ 5 2.1 Background and Physical Characteristics ............................................................ 5 2.1.1 Size and Location of Service Area ................................................................... 5 2.1.2 Water Management Facilities ........................................................................ 6 2.1.3 Service Area Terrain and Soils ........................................................................ 8 2.1.4 Climate .......................................................................................................... 9 2.2 Operational Information .................................................................................. 10 2.2.1 Operating Rules and Regulations ................................................................. 10 2.2.2 Water Delivery Measurements/Calculations ................................................ 12 2.2.3 Water Rate Schedules and Billing................................................................. 13 2.2.4 Water Shortage Allocation Policies and Drought Plan .................................. 14 3 Description of Quantity of Water Uses....................................................................... 16 3.1 Basis for Reporting Water Quantities ............................................................... 16 3.2 Agricultural Water Use ..................................................................................... 16 3.3 Environmental Water Use ................................................................................ 21 3.4 Recreational Water Use ................................................................................... 21 3.5 Municipal and Industrial Use ............................................................................ 22 3.6 Groundwater Recharge Use ............................................................................. 22 3.7 Other Water Use .............................................................................................. 23 4 Description of Quantity and Quality of Water Resources ........................................... 24 4.1 Water Supply Quantity ..................................................................................... 24 4.1.1 Surface Water Supply .................................................................................. 24 4.1.2 Groundwater Supply.................................................................................... 26 4.1.3 Other Water Supplies .................................................................................. 27 KDWD 2020 AWMP i TODD GROUNDWATER 4.2 Water Supply Quality ....................................................................................... 28 4.2.1 Surface Water Quality ................................................................................. 28 4.2.2 Groundwater Quality ................................................................................... 29 4.2.3 Other Water Quality .................................................................................... 31 4.2.4 Source Water Quality Monitoring ................................................................ 32 5 Water Budget ............................................................................................................ 33 5.1 Quantifying KDWD’s Water Supplies ................................................................ 33 5.1.1 Other Water Sources Quantities .................................................................. 34 5.2 Quantification of Water Uses ........................................................................... 34 5.3 Annual Water Budget ....................................................................................... 34 5.4 Identify Water Management Objectives ........................................................... 35 5.5 Quantify the Efficiency of Agricultural Water Use ............................................. 37 6 Climate Change ......................................................................................................... 39 7 Water Use Efficiency Information .............................................................................. 41 7.1 Efficient Water Management Practices Implementation and Reporting ............ 41 7.2 EWMP Implementation Schedule ..................................................................... 45 8 Supporting Documentation ....................................................................................... 47 8.1 Agricultural Water Measurement Regulation Documentation .......................... 47 8.2 Delta Plan Consistency ..................................................................................... 47 9 References ................................................................................................................ 51 KDWD 2020 AWMP ii TODD GROUNDWATER List of Tables Table 1. Summary of Coordination, Adoption, and Submittal Activities ............................ 3 Table 2. Water Supplier Information................................................................................ 5 Table 3. Water Conveyance and Delivery System ............................................................. 6 Table 4. Groundwater Recharge Basins ........................................................................... 7 Table 5. KDWD Isabella Reservoir Storage Rights ............................................................. 8 Table 6. Average Monthly Climate Information ............................................................. 10 Table 7. Supplier Delivery System and Actual Lead Times .............................................. 11 Table 8. Water Allocation Policy Basis............................................................................ 12 Table 9. Water Delivery Measurements ......................................................................... 13 Table 10. 2020 Water Rate Basis ..................................................................................... 14 Table 11. Annual Agricultural Water Use (AF) .................................................................. 17 Table 12. Agricultural Crop Data for 2015 ........................................................................ 18 Table 13. Agricultural Crop Data for 2016 ........................................................................ 19 Table 14. Agricultural Crop Data for 2017 ........................................................................ 19 Table 15. Agricultural Crop Data for 2018 ........................................................................ 20 Table 16. Agricultural Crop Data for 2019 ........................................................................ 20 Table 17. Crop Consumptive Use and Applied Water Demands ....................................... 21 Table 18. Irrigated Acreages and Multiple Cropping ........................................................ 21 Table 19. Municipal/Industrial Groundwater Pumping (AF) ............................................. 22 Table 20. Groundwater Recharge (AF) ............................................................................. 23 Table 21. KDWD Kern River Water Rights ........................................................................ 25 Table 22. Kern River Entitlement Caps from Court Decisions ........................................... 25 Table 23. Surface Water Supplies (AF) ............................................................................. 26 Table 24. Groundwater Supplies (AF)............................................................................... 27 Table 25. Recycled Water Supplies (AF) ........................................................................... 27 Table 26. Water Quality, 2019 ......................................................................................... 28 Table 27. Groundwater Quality ....................................................................................... 29 Table 28. Recycled Water Quality .................................................................................... 31 Table 29. Water Supply Quantities (AF) ........................................................................... 33 Table 30. Quantify Water Use (AF) .................................................................................. 34 Table 31. Water Budget Inflows (AF) ............................................................................... 35 KDWD 2020 AWMP iii TODD GROUNDWATER Table 32. Water Budget Outflows (AF)............................................................................