The Napa County Groundwater Sustainability Agency oversees Groundwater Sustainability in the County. The Agency is also in charge of creating and carrying out a Groundwater Sustainability Plan (GSP) for the Napa Valley Subbasin. The Groundwater Sustainability Plan Advisory Committee (GSPAC) helped the Agency create the GSP.
The GSP includes policies and recommendations for taking care of and protecting groundwater within the Subbasin for the long term. The GSPAC submitted a draft GSP for the Agency to review on November 19, 2021.
The Napa County Groundwater Sustainability Agency will meet on January 11, 2022 to consider adoption of the GSP for the Napa Valley Subbasin. Visit the 1/11 meeting page for more information, agenda, and instructions for virtual or in-person participation.
Discover the history of groundwater in Napa County with the interactive timeline.
Everyone in Napa County relies on groundwater. Rural residents and farms use groundwater. Groundwater also supports healthy watersheds. Napa County has been monitoring groundwater since the 1960s. In 2009, the monitoring work was expanded to provide a more complete picture of local conditions.
Today, a Groundwater Sustainability Plan for the Napa Valley Subbasin is being created to make sure that we have a healthy groundwater basin now and in the future. You can take part in creating the Plan. Draft sections are posted on this website. You may review and provide comments at any time.