Agendas & Meeting Calendar
Groundwater Sustainability Plan
Take a look at the final 20-year plan for groundwater sustainability in the Santa Rosa Plain subbasin.
G.U.I.D.E
Groundwater User Information Data Exchange (GUIDE) Program. Review and update your water use information here
Find Your Basin
Materiales en Español
Estamos trabajando para proporcionar tantos materiales en español como sea posible
Rate and Fee Study
On Thursday, July 14, the Board of Directors of the Santa Rosa Plain Groundwater Sustainability Agency (GSA) approved an ordinance requiring the registration of groundwater use facilities, establishing a method for calculating groundwater use, and authorizing the update and adoption of a groundwater sustainability fee. More information on the updated ordinance and fee can be found here.
Drought and Groundwater
For more information and resources about the drought, groundwater wells and groundwater monitoring and reporting visit our drought page.
Santa Rosa Plain Groundwater Users Have Opportunity to Update Well Information
Starting Monday, March 22, groundwater users who own property in the Santa Rosa Plain area will have an opportunity to review and update their water use information. The new Groundwater User Information Data Exchange (GUIDE) Program is being launched by the Santa Rosa Plain Groundwater Sustainability Agency (GSA) to improve understanding of how groundwater is used, and the number and types of water wells in the Santa Rosa Plain basin.
Go to GUIDE Program information page.
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.
Santa Rosa Plain groundwater basin land use and crop type map (click to view larger)
“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
