COMMITTEE AGENDA MEMORANDUM
Water Supply and Demand Management Committee
Government Code ? 84308 Applies: Yes ? No ?
(If "YES" Complete Attachment A - Gov. Code ? 84308)
SUBJECT: title
Receive an Update and Discuss the B.F. Sisk Dam Raise and Reservoir Expansion Project; Recommend to the Board to Authorize Payment of up to $1,344,613 for Valley Water's Share of Project Planning Costs.
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RECOMMENDATION: Recommendation
A. Receive an update and discuss the B.F. Sisk Dam Raise and Reservoir Expansion Project.
B. Recommend to the Board to authorize payment up to $1,344,613 for Valley Water's share of Project planning costs.
Body
SUMMARY:
Valley Water has provided $3,444,063 to date to support funding the planning and development of the B.F. Sisk Dam Raise and Reservoir Expansion Project (Project). Additional funds will be needed on September 1, 2026 to continue into the next phase of planning work.
The U.S. Bureau of Reclamation (Reclamation) and the San Luis & Delta-Mendota Water Authority (SLDMWA), acting on behalf of six members, including Valley Water, are jointly developing the Project. This Project will raise the existing B.F. Sisk Dam by 10 feet and increase the storage capacity of San Luis Reservoir by 130,000 acre-feet (AF), of which 63,560 AF is currently reserved for Valley Water - an amount of storage larger than all of Valley Water's reservoirs except for Anderson. This Project is separate and distinct from the B.F. Sisk Safety of Dams Modification Project (SoD Project), which is being undertaken by Reclamation and the Department of Water Resources (DWR) to address seismic risks of the existing dam and will not increase the storage capacity.
This memorandum summarizes progress on the Project since the last Committee and Board updates were given on this item in March and April 2025, respectively.
The Project is included in the Water Supply Master Plan 2050, approved by the Board in November 2025, as a part of the lower cost strategy t...
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