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GAMA - Publications

The State Water Board and USGS have prepared fact sheets to help the public and other agencies understand the activities associated with the GAMA Program.






White Paper on GAMA Special Studies:

Project Reports:

Many other groups, including non-profit environmental advocacy groups, university researchers, and others have prepared reports related to groundwater quality in California. A selection of these reports is available below:

California Aquifer Susceptibility Assessment

Lawrence Livermore National Laboratory CAS Reports

USGS CAS Reports

Hydrogeologically Vulnerable Areas - In 2000, the State Water Resources Control Board, Division of Water Quality, created a California map identifying soil or rock conditions that may be more vulnerable to groundwater contamination.

The Hydrogeologic Vulnerable Areas Shapefile is available on GeoTracker GAMA-GAMA Shapefile Download

The State Water Resources Control Board Compilation of Water Quality Goals

  • A new 17th Edition of the staff report “A Compilation of Water Quality Goals” dated January 2016, has been released. Please cease using earlier editions of this report and earlier versions of the Water Quality Goals tables, as they contain outdated information.
  • Water Quality Goals Searchable Database - contains an extensive compendium of numeric water quality thresholds from the literature for over 860 chemical constituents and water quality parameters

State Water Board Division of Drinking Water (formerly California Department of Public Health)

  • DWR Bulletin 118 - The Department of Water Resources publishes descriptions, maps, and GIS compatible data files for over 400 delineated groundwater basins in California.

The Department of Pesticide Regulation (DPR) maintains a Ground Water Protection Program. Groundwater regulations related to pesticide use and application can be found here, along with maps and files of sensitive groundwater protection areas.

Subscribe to our Groundwater Ambient Monitoring & Assessment Program (GAMA) email list to receive notifications and the latest updates. After subscribing, you will need to check your email host for a confirmation email to complete the subscription.

  Subscribe to our other email lists. See the "Water Qualitysection.


State Water Resources Control Board
Division of Water Quality
Groundwater Ambient Monitoring & Assessment Program (GAMA)
1001 I Street, 15th Floor
Sacramento, CA 95814

Telephone: (916) 341-5577
Fax: (916) 341-5463

GAMA Program Online Map

Visit the GAMA Program Publications online map to spatially view study units and access available publications for each study unit.

USGS Water Quality Mapping Tool

Visit the USGS Water Quality Mapping Tool to view study unit data including trends results.