Sonoma County Groundwater Basins

About the Sustainable Groundwater Management Act in Sonoma County

In September 2014, Governor Brown signed historic legislation requiring that California’s critical groundwater resources be sustainably managed by local agencies. The Sustainable Groundwater Management Act (SGMA) gives local agencies (cities, counties and water districts) powers to sustainably manage groundwater over the long-term, and requires Groundwater Sustainability Plans (GSPs) be developed for medium- and high-priority groundwater basins.

The first step implementing the new law is the creation of local Groundwater Sustainability Agencies (GSAs). The GSAs must be formed by June 30, 2017, and three GSAs are currently in the process of formation in Sonoma County: