Shafter-Wasco Irrigation District

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Allocation

- 2026 water year (district moved ET accounting to an Oct–Sep water year) - Management Area 2 (MA-2) groundwater ET allowance: 2.84 af/ac annual limit - Jan–Sep 2026 transition (9-month stub): 2.58 af/ac (91% of the annual limit, prorated to the ET curve)
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September 9, 2026

Growers were encouraged to use remaining allocation ahead of an early-November drawdown (expected Nov 5–10) after August deliveries were just under 5,000 AF vs. ~8,000 AF expected. The board approved joining North Kern's aquifer injection feasibility study on subsidence along the Friant-Kern Canal. Staff discussed an October treatment window and flushing lines with district water.

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August 12, 2026

The board discussed whether to continue copper-based mussel treatment through October; members leaned toward continuing, and staff described positive early results and plans to bring operations in-house next year. The FY 2025 audit was approved with an unqualified opinion and ~$14.5M working capital. Staff also reviewed El Niño outlook information and ongoing recharge maintenance.

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July 8, 2026

The board discussed golden mussel treatment options, landing on a month-to-month reassessment approach. Friant Class One allocation remains at 100% (~1.12 AF/acre) with no further changes expected. Forecasters report El Niño is developing unusually early, which could disrupt fall canal dewatering and mussel treatment timing.

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June 10, 2026

Golden mussel treatment is underway with promising early results; staff estimate ~$300K more through year-end. Allocation is 1.0 AF/acre; staff expect ~1.1 once finalized. Board approved shift to water-year billing/ET limits with 2.58 AF/acre for Jan–Sep 2026 transition.

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May 13, 2026

Metered allocated delivery starts May 18; allocation is projected near ~1.1 AF/AC. The board approved the revised 2026 budget (~$59.4K surplus) and approved signing the Greenleaf EarthTec QZ contract ($15/AF; $20K down payment only if treatment begins). Poplar recharge budget increased to ~$110K. $225K set aside for potential golden mussel treatment. Treatment begins if pump-back resumes or mussels are found. Growers advised to consult their PCA before using treated water on sensitive crops.

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