East Turlock GSA

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Allocation

2026-27 Allocation Year Total allocation: 1.6 af/ac (through October 2027), then 1.4 af/ac (2028-2032) - Category 0 Native Yield: 0.5 af/ac [$0]
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Allocation Documents

Allocation Base Rules

Helpful Link

March 26, 2026

Groundwater usage invoices were mailed March 23, with payment and any modification requests due by May 7. Growers with unreported fallowing may still show estimated consumptive use (ET) and should submit a modification request by that deadline. Nine MLRP projects were advanced (direction only) for ~$4.1M; staff will return agreements for board approval.

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March 10, 2026

True-up invoices for 2025 are being mailed this week to 343 accounts; drop-in help is planned Mar 26 after the Board meeting, Apr 14 before the TAC meeting, and Apr 23 after the Board meeting. Use was 19,500 AF below target, lowering Category 2 billings ($3.9M vs. $6.8M budget) while Category 3 billings (~$3M) offset. Staff discussed skipping 2026-27 deposit invoices; Board to consider Mar 26.

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February 26, 2026

True-up invoices will be mailed around March 10, giving growers 45 days to pay or request appeals or modifications. Groundwater levels are generally improving with no interim milestone exceedances, and the basin remains on its glide path toward sustainability. The board approved incentivized fallowing on about 3,448 acres at $370 per acre, targeting over 7,500 acre-feet in pumping reductions.

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February 10, 2026

The basin continues making progress with stabilizing groundwater levels after three favorable water years, though many Eastern Principal Aquifer representative wells remain below minimum thresholds while staying above interim milestones. The 2025 Annual Report is being restructured to better communicate basin conditions to state regulators, with draft review planned for February. Technical work on model updates and revised subsidence criteria is underway.

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January 22, 2026

Preliminary data show the board met its 2025 demand reduction target with about 143,000 acre-feet of consumptive groundwater use, driven by fallowing, cover cropping, and surface water. A new credit split policy was approved, with growers receiving 40–100% of credits depending on funding sources. The board also approved up to about $2.5 million for a three‑year incentivized fallowing program, expected to cover roughly 2,768 acres

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