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. This newsletter is published in February, May, August and November and is available in English and Spanish.

Prior to 2023, monthly Email Updates were provided. Access the archive of those updates from 2015-2022.

Featured Articles

Voluntary Well Monitoring Program gears up for spring

Voluntary Well Monitoring Program gears up for spring

Sonoma County’s groundwater basins are characterized by diverse geological conditions underground, so to truly understand how much water is in our aquifer requires water level measurements at many strategic locations throughout the region. While there are several public monitoring wells that record water level data in Sonoma County, there still exist many data gaps. With recent grant funding from the California Department of Water Resources, a few more monitoring wells will be constructed in Sonoma County over the next two years, but that still does not complete the full picture. Building on the existing voluntary monitoring network, the GSAs are now seeking to expand a volunteer monitoring network for private wells is underway to get a more complete understanding of aquifer levels.

Groundwater stewardship at home with Sebastian Bertsch

Groundwater stewardship at home with Sebastian Bertsch

Sebastian Bertsch’s interest in groundwater stewardship started early. Recalling his early childhood spent hiking with his family in his native Switzerland, he marveled at the abundance of freshwater along the way. “You never had to carry a water bottle,” he said. “You’d always find little springs that provided a source of fresh water to drink.” This early exposure instilled in him an appreciation for the interconnectedness of water systems and a mindset of abundance rather than scarcity.

Gary Mickelson: Petaluma’s Groundwater Industry Leader

Gary Mickelson: Petaluma’s Groundwater Industry Leader

In his nearly 30 years in the local pump and well industry, Gary Mickelson (who serves on the Petaluma Valley GSA Advisory Committee) provides insight on concerns of well owners, including that customers seem to ask a lot of questions about water quality, and they...

GSAs Considering Options for Reducing Groundwater Use

GSAs Considering Options for Reducing Groundwater Use

If you’ve ever talked to your doctor about losing a few pounds, you know that he or she will advise to cut the calories and increase your exercise. Creating a sustainable groundwater basin relies on a similar approach: Both reducing the amount of groundwater used and...

Construction of Nine New Groundwater Monitoring Wells Complete

Construction of Nine New Groundwater Monitoring Wells Complete

A big challenge with managing groundwater is that it’s invisible to the human eye. Unlike surface water in lakes and rivers, we can’t actually see groundwater levels rise and fall. That’s why monitoring wells are so important: These wells are drilled for the sole...

Sangiacomo Family Vineyard: Growing Premium Grapes with Less Water

Sangiacomo Family Vineyard: Growing Premium Grapes with Less Water

“Water isn’t as plentiful as it once was,” noted Mike Sangiacomo referring to his family’s 1,600 acres of vineyards, first established one hundred years ago by his grandfather in Sonoma Valley. “But we have learned to use water as efficiently as possible.” Mike...