Regional aquifer systems in the southern midcontinental U.S.
By Water Resources Mission Area
2013 (approx.)
![Map showing six aquifer systems in the midcontinental U.S.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/USGS_SIR2013-5017_fig1.png?itok=PqpHdcT-)
Detailed Description
Regional aquifer systems in the southern midcontinent and adjacent areas, as defined in the U.S. Geological Survey Regional Aquifer-System Analysis Program.
Sources/Usage
Public Domain.