San Luis & Delta-Mendota Water Authority

May 14, 2026

Water ops looked strong: Oroville near capacity (~3.38 MAF) and Folsom nearly full (~958 TAF), with Jones potentially increasing from 4 to 5 units if available. Golden mussels are in a spawning boom; growers were asked to report sightings and also report if pipes are clear. April hydrology significantly improved conditions: precipitation at 180% of normal.

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March 5, 2026

Federal funding announcements of ~$750M One Big Beautiful Bill Act plus ~$750M aging infrastructure were described as imminent; ~$650M IRA drought funds face a Sept. 30 obligation deadline. Golden mussels are colonizing facilities; response is mitigation-focused and vulnerability assessment final report is pending. Ops: federal San Luis just under 700,000 AF, exports ~4,200 cfs; Vernalis inflows declining; April–May restrictions remain a concern.

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February 5, 2026

The Board advanced Phase 1 of the DMC Subsidence Correction Project, authorizing $200,000 for pre-construction services with Kiewit and a $4.1 million advanced funding agreement with Westlands Water District. Water Year 2026 OM&R rates were approved for 25% and 50% allocation scenarios, with collections starting at the 25% rate. Jones Pumping Plant exports are currently around 1,900 CFS to help meet February X2 requirements.

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January 8, 2026

The Board approved substantial executive compensation increases recognizing outstanding 2025 performance, along with the FY 2027 budget of $13.87 million including modest salary increases and new succession planning positions. Enhanced Delta export flexibility under new operational procedures is already delivering significant water supply benefits, with approximately 40,000 additional acre-feet exported during the recent first flush period.

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December 11, 2025

Reclamation issued a Record of Decision on Action 5, providing increased operational flexibility for South of Delta exports. Delta-Mendota Canal subsidence correction Phase 1 solicitation is out, proposals are due January 9 with board consideration of pre‑construction work expected in early February and potential construction authorization in May. Golden mussels, first detected in October 2024, are present in many facilities and a vulnerability assessment will focus on smaller piping systems.

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