TO: Technical Advisory Group for the Napa County Groundwater Sustainability Agency
FROM: Brian D. Bordona, Director of Planning, Building and Environmental Services
REPORT BY: Jamison Crosby, Natural Resources Conservation Manager
SUBJECT: Update on the Napa Valley Subbasin Periodic Evaluation
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RECOMMENDATION
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Receive an update on the Napa Valley Subbasin Periodic Evaluation required to be submitted by the Napa County Groundwater Sustainability Agency to the California Department of Water Resources by January 31, 2027.
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Procedure
Staff introduces.
Questions and answers with the TAG.
Public comments.
BACKGROUND AND DISCUSSION
The Napa Valley Subbasin Periodic Evaluation must be submitted by the Napa County Groundwater Sustainability Agency (NCGSA) to the California Department of Water Resources (DWR) by January 31, 2027.
The Periodic Evaluation is an evaluation and written assessment of an approved Groundwater Sustainability Plan (GSP) to occur at least every five years and when a Plan is amended (the Periodic Evaluation is due no later than five years after initial GSP submittal). The Periodic Evaluation requires the NCGSA to conduct a thorough assessment of how the Plan is performing, whether modifications of the Plan or management objectives are necessary, and a determination that the GSP implementation is on track to meet the Subbasin sustainability goal. Additionally, the Periodic Evaluation is required to:
Compare current groundwater conditions over the evaluation cycle with relevant sustainable management criteria,
Evaluate the basin setting in light of significant new information or changes in water use, and an explanation of any significant changes.
Provide an evaluation of the extent to which progress is being made in implementing projects and management actions (PMAs) and the effect on groundwater conditions resulting from those PMAs.
Assess the monitoring networks, and
Discuss any other GSP topics that have changed during GSP implementati...
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