County of Napa Plans, Reports, & Documents

Groundwater Monitoring Plans, Reports, and Surveys

The Annual Reports provide the latest information on efforts underway since 2008 by Napa County and others to implement groundwater management actions to better understand groundwater conditions, establish monitoring to track conditions, conduct education and outreach, and develop programs to assess and maintain groundwater sustainability.

• 2022 Napa County Annual Groundwater Monitoring Report
• 2021 Napa County Annual Groundwater Monitoring Report
• 2020 Napa County Annual Groundwater Monitoring Report
  • 2020 Napa County Annual Groundwater Monitoring Report Summary
• 2019 Napa County Annual Groundwater Monitoring Report PDF  PDF 
  • 2019 Napa County Annual Groundwater Monitoring Report Summary
• 2018 Napa County Annual Groundwater Monitoring Report PDF  PDF 
  • 2018 Napa County Annual Groundwater Monitoring Report Summary
• 2017 Napa County Annual Groundwater Monitoring Report PDF  PDF 
  • 2017 Napa County Annual Groundwater Monitoring Report Summary
• 2016 Napa County Annual Groundwater Monitoring Report
• 2015 Napa County Annual Groundwater Monitoring Report PDF  PDF 
• 2014 Napa County Annual Groundwater Monitoring Report PDF  PDF 

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GSP Workplans

• 2022 Draft Napa River Watershed Stormwater Resources Plan (SWRP)

General Documents

• Compiled Grant Application Documents 
• Map of the Napa Valley Subbasin PDF  PDF  PDF  PDF  
• Stakeholder Communication & Engagement Plan (CEP)
• Napa Valley Subbasin Monitoring Guidebook (PDF)
• Groundwater Sustainability Plan Advisory Committee (GSPAC) Bylaws
• Napa Groundwater Sustainability Plan Advisory Committee (GSPAC) Ground Rules 
• Napa Groundwater Sustainability Plan Advisory Committee (GSPAC) Committee Role & Charge 
• 2017 Northeast Napa Area: Special Groundwater Study
• 2017 Northeast Napa Special Groundwater Study - Summary and Recommendations 
• 2017 Northeast Napa Special Groundwater Study - Water Budget Components
• 2017 Northeast Napa Special Groundwater Study – Presentation
• 2016 Napa Valley Subbasin Basin Analysis Report
• 2013 Napa County Groundwater Monitoring Plan PDF  PDF  PDF  PDF 
  Learn about the County’s approach to tracking groundwater levels and quality.
• 2011 Napa County California Statewide Groundwater Elevation Monitoring (CASGEM) Network Plan Updated in 2014 
  Learn about California’s plan to monitor groundwater levels to study seasonal and long term groundwater trends in all basins and subbasins.
• 2011 Groundwater Conditions & Monitoring Recommendations PDF  PDF  PDF  PDF 
  Learn about the County’s plans to study groundwater conditions and trends, expand the monitoring program, and the hydrology of the Napa Valley Subbasins.
• 2010 Groundwater Stakeholder Assessment PDF  PDF  PDF  PDF 
  Learn about County efforts to create a plan to collaborate with well owners to gather groundwater data.