Sonoma County Groundwater

10/06/2026

Farmers! Business Owners! Environmental Specialists! Rural Residents! An opportunity to be a leader for groundwater sustainability...

The Santa Rosa Plain Groundwater Sustainability Agency (GSA), is accepting applications for the interest-based seats on the GSA Advisory Committee. Bring your perspective, knowledge and voice to the agency and help support essential groundwater resources in our area.

Please share this opportunity for engaging in true local leadership and consider applying before the October 30 deadline!

The boundaries of this GSA area includes which includes both unincorporated and municipal areas stretching from Windsor to the north, Sebastopol to the West, Rohnert Park, Cotati to the south and Santa Rosa in the middle.

Learn more at the link in comments

10/06/2026

Farmers! Business Owners! Environmental Specialists! Rural Residents! Petaluma Valley Groundwater Sustainability Agency (GSA) is accepting applications for the interest-based seats on the GSA Advisory Committee. Bring your perspective, knowledge and voice to the agency and help support essential groundwater resources in our area! Share this opportunity and consider applying before the October 30 deadline! Link in comments

Protecting groundwater today ensures we have it for tomorrow.

09/29/2026

At Vadasz Family Vineyard in Sonoma Valley, Tyler Klick from Redwood Empire Vineyard Management (REVM) implements a data-driven approach for growing great grapes, and protecting groundwater at the same time. By implementing this careful approach to irrigation (soil moisture sensors, porometers, and targeted irrigation bypasses), the vineyard is cutting groundwater demand by an estimated 5%, all while improving w**e quality.

It's a simple but powerful reminder: sustainable choices made today by ag leaders help protect water resources for the whole community tomorrow.

Read the full case study sonomavalleygroundwater.org/data-driven-irrigation-helps-sonoma-vineyard-conserve-groundwater

09/29/2026

As we approach the rainy season, there are ways you can help more precipitation make its way underground to recharge the aquifer, instead of drain to the street and away from your property. Get strategies for retaining the rain on your land to slow it, spread it, sink it: wellawaretoolkit.org

09/24/2026

Hydrogeological modeling, monitoring well data and climate data are just a few indicators of how much water our groundwater basins can sustainably provide from year to year without a dangerous pattern of decline. We refer to this as the groundwater basin's sustainable yield, the maximum amount of water (measures in acre-feet) that can be withdrawn without causing long-term harm.

So how are we doing? Our 2025 Water Year Annual Reports showed that in Petaluma Valley and Santa Rosa Plain groundwater levels were in a good range, and use did not exceed the yield, but the Sonoma Valley subbasin showed that too much water was extracted. You can read about what that means, and why it matters: sonomavalleygroundwater.org/annual-reports

09/16/2026

Sonoma County's three Groundwater Sustainability Agencies are now inviting people to consider applying to serve on their respective Advisory Committees, in one of the interest-based seats. Terms are ending at the end of this year, and current members can reapply to continue service, and new people are invited to represent business, agriculture, environmental, rural residential and community at-large. The committees meet several times a year and provide recommendations to GSA staff and the board of directors related to programs and projects. Find out more on each of the GSA websites: petalumavalleygroundwater.org/ac-application | sonomavalleygroundwater.org/ac-application | santarosaplaingroundwater.org/ac-application

09/13/2026

Groundwater management in Sonoma County is community-led. Residential well
owners, farmers, environmental advocates, business leaders, technical experts and local leaders all have a seat at the table, because the people who live here know what's at stake and what our water future needs to look like.
From September 14-October 30, all three GSAs are inviting applications for interest-based seats on their respective Advisory Committees. Consider serving in this volunteer role for a two year term, Jan. 2027-Dec. 2028.

09/09/2026

Public Comment Period is now open!
This Draft First Periodic Evaluation Report
Public participation is a key component of the Periodic Evaluation process. A 30-day comment period as well as public meetings provide the opportunity for stakeholders to provide comments on the report.
Read the report: https://sonomavalleygroundwater.org/periodic-evaluation

September 9 – October 9: The public is invited to submit comments via email to [email protected]
Tuesday, September 15, 3:00-5:30 PM: Sonoma Valley GSA Advisory Committee Meeting, Valley of the Moon Water District, Board Room, 19039 Bay Street, Sonoma Opportunity for public comment
After October 9: GSA will make revisions based on comments

09/06/2026

Whether you're a farmer, a business person, a rural resident with a groundwater well, or just want to get some targeted, practical advice for conserving or protecting groundwater on your property, the Well Aware Toolkit has valuable guidance for you. Explore water savings practices, funding opportunities, and expert connections at WellAwareToolkit.org.

09/03/2026

When it comes to sustainable water use, Sonoma State University is leading by example, irrigating almost the entire campus with recycled water, upgrading infrastructure to save over 1 million gallons, and transforming landscaping to protect local groundwater. A great model for sustainable water practices in action!

Read the case study: santarosaplaingroundwater.org/leading-by-example-water-sustainability-at-sonoma-state-university