USGS has published “Ground-Water Availability in the United States” as USGS Circular 1323. “This report examines what is known about the Nation’s ground-water availability and outlines a program of study by the U.S. Geological Survey Ground-Water Resources Program to improve our understanding of ground-water availability in major aquifers across the Nation. The approach is designed to provide useful regional information for State and local agencies who manage ground-water resources, while providing the building blocks for a national assessment.” Quoted from the USGS release.
