The Santa Rosa Plain Groundwater Sustainability Agency (GSA) is a public agency formed to sustainably manage groundwater in the Santa Rosa Plain groundwater basin. The agency was formed in June 2017 and has a Board of Directors, an Administrator and an Advisory Committee.
Agendas & Meeting Calendar
Find out when and where the Board of Directors and the Advisory Committee are meeting next.
Groundwater Sustainability Plan
Take a look at the final 20-year plan for groundwater sustainability in the Santa Rosa Plain subbasin.
GUIDE
Groundwater User Information Data Exchange (GUIDE) Program. Review and update your water use information here.
Groundwater Sustainability Fee
Learn more about the recently adopted fee and find answers to frequently asked questions.
News
For more updates about Projects and Programs visit the GSA Activities page.
Apply to Serve on the GSA Advisory Committee
The three Groundwater Sustainability Agencies (GSAs) serving Sonoma County — Petaluma Valley GSA, Sonoma Valley GSA, and Santa Rosa Plain GSA — are jointly recruiting applicants to fill interest-based seats on their respective Advisory Committees for the two-year term...
Santa Rosa Plain Groundwater Sustainability Plan Draft Periodic Evaluation Available for Review
Public Comment Period July 13 – August 17, 2026 The Santa Rosa Plain Groundwater Sustainability Agency is currently conducting a Periodic Evaluation of the Groundwater Sustainability Plan (GSP), as required by the State of California under the Sustainable Groundwater...
From Pasture to Percolation: One Resident’s Effort to Recharge Groundwater
Individual residents can play an important role in protecting and enhancing our precious groundwater supply. In Sebastopol, within the Santa Rosa Plain Groundwater Subbasin, Martin Mitchell is doing just that. Mitchell is restoring his property in an effort to revitalize the land, support the return of native species, and recharge the groundwater basin. Mitchell wants to show others the value of sustainable living through changes they can implement on their own properties.
Three community programs for building groundwater sustainability!
LEVEL UP! voluntary groundwater well monitoring program. Learn more.
FLOW SMART voluntary well flow-metering program. Learn more.
WELL AWARE tools for building local groundwater sustainability Learn more.
Groundwater Sustainability Plans Approved
On January 26, 2023, the California Department of Water Resources announced its approval of the Groundwater Sustainability Plan. This 20-year plan establishes a standard for sustainability of groundwater management and provides a plan for managing groundwater over a 20-year period. Click here to review the GSP.


