Quarterly Newsletter
Started in 2023, the Quarterly Newsletter provides news and information related to the Sonoma County Groundwater Agencies in Petaluma, Santa Rosa, and Sonoma Valley. The newsletter is published four times a year and is available in English and Spanish.
Prior to 2023, monthly Email Updates were provided. Access the archive of those updates from 2015-2022.
Quarterly Newsletter Archive
2026 Quarterly Newsletter
Q2 June 2026 – English
Q2 June 2026 – Spanish
Q1 Mar. 2026 – English
Q1 Mar. 2026 – Spanish
2025 Quarterly Newsletter
2024 Quarterly Newsletter
Featured Articles
Apply to Serve on a 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...
Sonoma Valley Groundwater Sustainability Plan Draft Periodic Evaluation Available for Review
The Sonoma Valley 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 Management Act (SGMA). The GSP for the Sonoma...
Voluntary Groundwater Level and Seawater Intrusion Monitoring in Sonoma Valley
Two voluntary groundwater data programs set in motion by the Sonoma Valley GSA have yielded their first set of results thanks to the participation of our community members across the basin! Groundwater Level Monitoring Program Level Up! is a voluntary well monitoring...
Leading by Example: Water Sustainability at Sonoma State University
A Well Aware Case Study Sustainability as a Core Practice Sonoma State University (SSU) is focused on campus sustainability including working to modernize water distribution systems, utilizing recycled water, and applying an ecological philosophy to landscaping all to...
From Lawn to Learning Landscape: La Tercera’s Water-Wise Schoolyard
A Well Aware Case Study Lawn Conversion to Climate-Appropriate Landscaping In Petaluma, La Tercera Elementary School (La Tercera)’s recent schoolyard transformation shows how institutions are actively stepping up to preserve groundwater. Prior to the schoolyard...
From Pasture to Percolation: One Resident’s Effort to Recharge Groundwater
A Well Aware Case Study The Connection Between Recharge and Rural Residents 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...
Data-Driven Irrigation Helps Sonoma Vineyard Conserve Groundwater
A Well Aware Case Study Vineyard Management at Vadasz Family Vineyard Tyler Klick from Redwood Empire Vineyard Management (REVM) is taking a data-focused approach to analyze vine stress to apply the appropriate amount of water to winegrapes to conserve as much...
From Lifeless Lawn to Rain Garden: HOA Saves Water through Community Redesign
A Well Aware Case Study Conversion of Lawn to Rain Gardens and Communal Space The Martin Farms HOA in Petaluma took on the challenge to convert their irrigated lawn into a community rain garden, significantly reducing its water demand. The Martin Farms HOA community...
Agriculture Groundwater User Survey Highlights Opportunities for Collaboration and Sustainability
Between August and December 2025, the GSAs conducted a joint survey of agricultural groundwater users to better understand priorities, concerns, and opportunities related to groundwater sustainability. The 21-question survey received 82 responses. Responses were well...
Recycled Water Expansion Project in Sonoma Valley Update
Planning is moving forward on a major recycled water expansion project in Sonoma Valley. This improvement will help reduce groundwater pumping in critically depleted areas while increasing long-term water supply reliability for local agricultural and irrigation users....