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

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Groundwater Sustainability Plan

Take a look at our 20-year plan for groundwater sustainability

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G.U.I.D.E

Groundwater User Information Data Exchange (GUIDE) Program. Review and update your water use information here

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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

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Materiales en Español

Estamos trabajando para proporcionar tantos materiales en español como sea posible

Drought and Groundwater

Worried about your well during the current drought? Rainfall in the region to date is only 12.89 inches, compared to average rainfall of 34 inches. The unprecedented dry conditions affects groundwater resources in multiple ways:

There is less recharge into the aquifer from rain, creeks, streams and other surface water;
People use more water to irrigate drought-stressed landscapes, gardens, vines and crops; and
Water catchment systems and on-farm reservoirs received minimal run-off, and may already be dry, resulting in greater reliance of groundwater for irrigation and drinking water for animals.

For all these reasons and more, rural landowners who rely on groundwater are understandably concerned about the impact that drought could have on wells.

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.

Read full press release here

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.

Latest Update

Santa Rosa Plain groundwater basin land use and crop type map (click to view larger)

What is the Sustainable Groundwater Management Act?

The Sustainable Groundwater Management Act (SGMA) requires that California groundwater basins identified as high or medium priority establish a Groundwater Sustainability Agency by June 30, 2017, and develop a plan for sustainable management by January 31, 2022. If the local GSAs fail to follow the timeline, then the State Water Resources Control Board will step in and intervene in local groundwater management. SGMA defines sustainable management as:

“Management and use of groundwater in a manner that can be maintained during the planning and implementation horizon without causing undesirable results.”

The Santa Rosa Plain GSA will be tracking six main sustainability indicators: