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State Water Board returns Chowchilla Subbasin to DWR after revised GSPs address groundwater decline and subsidence
Summary
After reviewing revisions to the Chowchilla Subbasin groundwater sustainability plan (GSP), board staff recommended against a probationary designation and the board voted unanimously to return the subbasin to Department of Water Resources (DWR) jurisdiction under SGMA.
The State Water Resources Control Board voted unanimously June 3 to return the Chowchilla Groundwater Subbasin to the Department of Water Resources (DWR) jurisdiction under the Sustainable Groundwater Management Act (SGMA) after board staff concluded recent revisions to the basin’s groundwater sustainability plan addressed earlier deficiencies.
Board staff said the Chowchilla GSAs revised their plan to better protect groundwater levels and to strengthen subsidence management, and that those revisions make a probationary designation unnecessary at this stage. The board’s action instructs staff to notify DWR that the basin will be returned to DWR’s SGMA review process.
Why it matters: Chowchilla is a critically overdrafted subbasin in the San Joaquin River hydrologic region. The basin has experienced long‑term groundwater declines and significant land subsidence. The board’s intervention process and the interplay with DWR’s GSP reviews are meant to ensure local groundwater sustainability plans are…
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