Petaluma Valley Groundwater Basin

View Petaluma Valley Groundwater Basin Map

Are You in the Petaluma Valley Groundwater Basin?

There is a tool on the California Department of Water Resources website that can help you determine the basin where your property is located.

Go to

Some basic instructions:

      1. On the right side of the page, check the box that reads “Bulletin 118 Groundwater Basins.”
      2. Type the property address into the search bar on the map.
      3. A dot will appear that identifies the property location.
      4. The name of the basin will also be in the map.

Petaluma Valley Groundwater Sustainability Agency (GSA)

The Petaluma Valley Groundwater Sustainability Agency (GSA) is a public agency formed to sustainably manage groundwater in the Petaluma Valley groundwater basin. The agency has a governing board, an administrator, a plan manager, and an advisory committee.

Scheduled Meeting Dates

For more information on GSA Board meetings, click here. For more information on advisory committee meetings, click here.

Board of Directors Meetings Advisory Committee Meetings
January 25, 2018 – 4:00 pm November 21, 2017 – 5:30 pm
March 22, 2018 – 4:00 pm January 10, 2018 – 5:30 pm
May 24, 2018 – 4:00 pm March 14, 2018 – 5:30 pm
July 26, 2018 – 4:00 pm May 9, 2018 – 5:30 pm
September 27, 2018 – 4:00 pm  
November 29, 2018 – 4:00 pm
(Moved to 5th Thursday to avoid Thanksgiving Holiday)