TO: Technical Advisory Group for the Napa County Groundwater Sustainability Agency
FROM: Brian Bordona - Interim Director of Planning, Building and Environmental Services
REPORT BY: Jamison Crosby, Natural Resources Conservation Manager
SUBJECT: Napa Valley Subbasin Groundwater Sustainability Plan Implementation: The First Five Years
RECOMMENDATION
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The Technical Advisory Group members will receive: 1) an update on implementation activities since Groundwater Sustainability Plan (GSP) adoption, and 2) a summary of key elements of GSP implementation efforts leading to the GSP five-year update due to the Department of Water Resources January 31, 2027, the GSP's adaptive management process, and response actions occurring in response to groundwater conditions.
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EXECUTIVE SUMMARY
The Sustainable Groundwater Management Act (SGMA) establishes the requirements for groundwater sustainability agencies (GSAs) to achieve their basin sustainability goals over a long-term horizon. Monitoring associated with the GSP-specific networks, which in the Napa Valley Subbasin encompass all six sustainability indicators, and reporting progress towards achieving sustainability are integral to successful implementation of the Napa Valley Subbasin GSP. Following adoption of the GSP, the Napa County GSA (NCGSA) immediately approved actions to begin GSP implementation before the GSP was submitted to DWR on January 31, 2022.
The County and NCGSA are committed to sustainably managing groundwater resources by implementing an adaptive management approach supported by best available information. To better manage and respond to changing conditions, the NCGSA formed the Technical Advisory Group (TAG) to advise the NCGSA and aid in the implementation of the Napa Valley Subbasin GSP. The five-member committee was first convened on August 11, 2022. A major milestone was achieved when the California Department of Water Resources (DWR) approved the GSP on January 26, 2023. GSAs are required...
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