BOARD AGENDA MEMORANDUM
Government Code ? 84308 Applies: Yes ? No ?
(If "YES" Complete Attachment A - Gov. Code ? 84308)
SUBJECT: Title
Consider the June 8, 2026, Water Supply and Demand Management Committee Recommendation to Authorize Payment of up to $1,344,613 for Valley Water's Share of Project Planning Costs for the B.F. Sisk Dam Raise and Reservoir Expansion Project and receive an update.
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RECOMMENDATION: Recommendation
Authorize Payment of up to $1,344,613 for Valley Water's Share of Project Planning Costs for the B.F. Sisk Dam Raise and Reservoir Expansion Project and receive an update.
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 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 Reservoir. This Project is separate from the B.F. Sisk Safety of Dams Modification Project (SoD Project), which addresses seismic risks of the existing dam and will not increase the storage capacity.
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 to diversify storage and supply to ensure a sustainable water supply for the community.
Project Costs
Previous Project costs authorized by Valley Water's Board at the April 8, 2025 Board meeting supported project advancements as outlined in this memorandum. Project manage...
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