Additional Well Resources

If you are interested in reviewing other available groundwater-related information associated with your property, the following webpages are available:

How to Search for a Well Log

For information about wells in the GSA basin, contact Well and Septic Permit & Resource Management Department, County of Sonoma by Phone (707) 565-2849 or visit them online at https://sonomacounty.ca.gov/PRMD/Eng-and-Constr/Well-and-Septic/Water-Wells

Well Permit No. Look-up

For record of well permits (requires parcel no.)
https://sonomacounty.ca.gov/PRMD/Services/Permit-History-Lookup/

Permit Records Look-up
Provides some details of each permit for your property (requires parcel no. or permit no.)
https://prmd.sonomacounty.ca.gov/CitizenAccess/Default.aspx  

Department of Water Resources’ well log web app https://dwr.maps.arcgis.com/apps/webappviewer/index.html?id=181078580a214c0986e2da28f8623b37