Groundwater Allocation Rules Now in Effect: The Merced Subbasin GSA's groundwater allocation rules are officially going into effect January 2026. Growers need to submit registration forms for alternative water sources and recharge facilities, with forms available online now. The allocation system will recognize surface water use and recharge actions taken between January 2020 and January 2026, but registration forms for these prior actions are due December 15, 2025.
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