USGS GAMA Domestic Well (Shallow Aquifer) Assessment Study Units
![map of California shaded by GAMA shallow aquifer study units](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/USGS_GAMA_domestic-wells_study-units_0.jpg?itok=dZw2JXWX)
Detailed Description
In 2012, the Groundwater Ambient Monitoring & Assessment Priority Basin Project (GAMA-PBP) began water-quality assessments of shallow aquifers, the groundwater resources typically used for private domestic and small system drinking-water supplies. These groundwater resources often are shallower than the groundwater resources used for public drinking-water supplies.
GAMA-PBP is designed to identify where and to what extent water quality of groundwater aquifers meets benchmarks that have been established for drinking water. Results of GAMA-PBP sampling are used to determine how groundwater quality is changing and to help explain patterns in chemical concentrations at the basin scale.
Sources/Usage
Public Domain.