With the late November atmospheric river that arrived in northern California and improved water supply conditions as reflected in the December 1, 2024 forecast, the Department of Water Resources (DWR) is increasing the State Water Project (SWP) allocation from five to fifteen percent of most State Water Project (SWP) contractors’ requested Maximum Annual Table A Amounts for 2025, as shown in Attachment A – 2025 SWP Allocation, updated December 23, 2024. DWR may revise the SWP allocation if water supply conditions change.
To determine the available SWP water supplies, DWR considers factors including SWP contractors’ anticipated carryover supplies into 2025, projected 2025 demands, existing storage in SWP conservation facilities, estimates of future runoff, SWP operational and regulatory requirements from the Federal Endangered Species Act and California Endangered Species Act, and water rights obligations under the State Water Resources Control Board’s authority.
To schedule SWP water deliveries under this allocation, DWR will develop the fifteen percent water delivery schedules by prorating the ten percent schedules submitted by the SWP contractors in October 2024 (as part of initial requests) or as revised with any subsequent updates. If an SWP contractor foresees any changes to their water delivery schedule, please communicate such changes to DWR in a timely manner.