WATER MANAGEMENT PLAN REPORT TO THE UNITED STATES BUREAU OF RECLAMATION ON CCWD’s WATER CONSERVATION PROGRAM AND ACTIVITIES FINAL MARCH 2012 This page left intentionally blank Water Management Plan REPORT TO THE UNITED STATES BUREAU OF RECLAMATION ON CCWD’s WATER CONSERVATION PROGRAM AND ACTIVITIES Board of Directors Joseph L. Campbell, President Karl L. Wandry, Vice President Bette Boatmun Lisa M. Borba John A. Burgh General Manager Jerry Brown This page left intentionally blank Water Management Plan EXECUTIVE SUMMARY ........................................................................................................................... 1 Contra Costa Water District Mission and Goals .................................................................................... 2 Central Valley Project Supply ............................................................................................................................ 3 Los Vaqueros Water Rights ............................................................................................................................... 3 Mallard Slough Supply....................................................................................................................................... 3 SECTION 1: DESCRIPTION OF THE DISTRICT ............................................................................................ 9 A. HISTORY ................................................................................................................................................... 9 1. Date CCWD Formed and Original Size .............................................................................................. 9 2. Current Size, Population and Irrigated Acres ................................................................................. 11 3. Water Supplies Received in Current Year ....................................................................................... 11 4. Annual Entitlement under Each Right and/or Contract .................................................................. 12 5. Anticipated Land Use Changes ....................................................................................................... 14 6. Cropping Patterns (DNA) ................................................................................................................ 15 7. Major Irrigation Methods (by acreage) (DNA) ............................................................................... 15 B. LOCATION AND FACILITIES .......................................................................................................................... 15 1. Incoming Flow Locations and Measurement Methods .................................................................. 15 2. Current Year Untreated Water Conveyance System ...................................................................... 17 3. Current Year Treated Water Distribution System ........................................................................... 18 4. Storage Facilities ............................................................................................................................ 18 5. Outflow Locations and Measurement Methods (DNA) .................................................................. 19 6. Agricultural Spill Recovery System (DNA) ....................................................................................... 19 7. Agricultural Delivery System Operation (DNA) ............................................................................... 19 8. Restrictions on Water Source(s) ..................................................................................................... 19 9. Proposed Changes or Additions to Facilities and Operations for the Next 5 Years ........................ 21 C. TOPOGRAPHY AND SOILS ............................................................................................................................ 21 1. Topography and its Impact on Water Operations and Management ............................................ 21 2. District’s Soil Associations (DNA) .................................................................................................... 22 3. Limitation Resulting from Soil Problems (DNA) .............................................................................. 22 D. CLIMATE ................................................................................................................................................. 22 1. General Climate of the District Service Area .................................................................................. 22 2. Impact of Microclimates on Water Management within the District ............................................ 23 E. NATURAL AND CULTURAL RESOURCES ........................................................................................................... 23 1. Natural Resources Areas within the District ................................................................................... 23 2. Description of District Management of the Resources in the Past or Present ................................ 25 3. Recreational Areas within the Service Area ................................................................................... 25 F. OPERATING RULES AND REGULATIONS .......................................................................................................... 26 1. District’s Operating Rules and Regulations ..................................................................................... 26 2. District’s Agricultural Water Allocation Policy (DNA) ...................................................................... 26 3. Official and Actual Lead Times Necessary for Water Orders and Shut Off (DNA) ........................... 26 4. District’s Policies Regarding Surface and Subsurface Drainage from Farms (DNA) ........................ 26 5. Policies on Water Transfers by the District to its Customers ........................................................... 26 G. WATER MEASUREMENT, PRICING, AND BILLING ............................................................................................. 26 1. District’s Current Year Water Charges ........................................................................................... 29 2. Annual Charges Collected from Customers .................................................................................... 30 3. Water‐Use Data Accounting Procedures ........................................................................................ 30 H. WATER SHORTAGE ALLOCATION POLICIES ..................................................................................................... 30 1. Current Year Water Shortage Policies ............................................................................................ 30 2. Policies that Address Wasteful Use of Water and Enforcement Methods ..................................... 31 SECTION 2: INVENTORY OF WATER RESOURCES ................................................................................... 33 A. SURFACE WATER SUPPLY ........................................................................................................................... 33 1. Amount of Surface Water Delivered to the District by each of the District’s Sources .................... 36 B. GROUND WATER SUPPLY ........................................................................................................................... 37 1. Acre‐foot Amounts of Groundwater Pumped and Delivered by the District .................................. 38 i Water Management Plan 2. Groundwater Basin(s) that Underlies the Service Area .................................................................. 39 3. Contractor Operated Wells and Managed Groundwater Recharge Areas ..................................... 39 4. Description of Conjunctive Use of Surface and Groundwater ........................................................ 39 5. Groundwater Management Plan ................................................................................................... 39 6. Groundwater Banking Plan ............................................................................................................ 40 C. OTHER WATER SUPPLIES ............................................................................................................................ 40 1. “Other” water used as part of the water supply ............................................................................. 40 D. SOURCE WATER QUALITY MONITORING PRACTICES ........................................................................................ 40 1. Potable Water Quality (Urban only) ............................................................................................... 41 2. Agricultural Districts (DNA) ............................................................................................................ 41 3. Water Quality Testing Program and Role of Each Participant in the Program .............................. 41 4. Current Year Water Quality Monitoring Programs ........................................................................ 41 E. WATER USES WITHIN THE DISTRICT .............................................................................................................. 43 1. Agricultural (DNA) .......................................................................................................................... 43 2. Irrigation Systems Used for Each Crop (DNA)................................................................................