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.


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.

Drought and Groundwater

For more information and resources about the drought, groundwater wells and groundwater monitoring and reporting visit our drought 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.