USGS Ground Water Atlas of the United States

The URL for the Ground Water Atlas of the United States is: "capp.water.usgs.gov/gwa/" The Ground Water Atlas of the United States is published by the U.S. Geological Survey (USGS, "usgs.gov"). This Atlas, prepared as an outgrowth of the Regional Aquifer System Analysis program of the USGS describes the location, extents, and geologic and hydrologic characteristics of all the important aquifers in the United States.

The Atlas explains technical terms in siple language and clearly illustrates the principles that govern occurrence and movement of ground water in different geologic and topographic settings. Therefore, it is useful not only to hydrologists, but also to planners, lawmakers, teachers or anyone who needs to understand the occurrence, movement, and quality of groundwater. The Ground Water Atlas consists of 14 chapters, 13 of which describe the ground water resources of different regions of the U.S., the remaining chapter contains introductory material and the Nationwide aquifer map.