The Sonoma Valley Groundwater Sustainability Agency (GSA) is a public agency formed to sustainably manage groundwater in the Sonoma Valley groundwater basin. The agency was formed in June 2017 and has a Board of Directors, an administrator and an advisory committee.
Meeting Calendar
Email Updates
Find Your Basin
To determine your basin of residence, click here and type your address into the search bar at the top left of the page
Materiales en Español
Estamos trabajando para proporcionar tantos materiales en español como sea posible
Sonoma Valley groundwater basin land use and crop type map (click to view larger)
Recent News
DWR recently released its recommendations for basin reprioritization. Under the draft assessment, Santa Rosa Plain, Petaluma Valley and Sonoma Valley Basins all increased from medium to high priority basins, and Alexander Valley, Wilson Grove Highlands and Dry Creek were each listed as medium priority. Public comment is open until August 20, with final prioritization in mid-November.
Monthly Email Updates
Find out what’s happening with groundwater activities in Sonoma County by reading the latest email update. Visit the “Email Updates” page to read updates from past months.
“Management and use of groundwater in a manner that can be maintained during the planning and implementation horizon without causing undesirable results.”
Lowering Groundwater Levels
Seawater Intrusion
Reduction of Storage
Land Subsidence
Degraded Groundwater Quality
Surface Water Depletion
