Digital simulation of ground-water flow in the High Plains Aquifer in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming

Effects of future ground-water pumpage on the High Plains Aquifer in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming

The regional aquifer system underlying the Northern Great Plains in parts of Montana, North Dakota, South Dakota, and Wyoming; summary

Geologic framework of the ground-water system in Jurassic and Cretaceous rocks in the Northern Great Plains, in parts of Montana, North Dakota, South Dakota, and Wyoming

Geohydrology of bedrock aquifers in the Northern Great Plains in parts of Montana, North Dakota, South Dakota, and Wyoming

Hydrology of the Floridan aquifer system in east-central Florida

Hydrology of the Floridan aquifer system in Southeast Georgia and adjacent parts of Florida and South Carolina

Hydrology of the Floridan aquifer system in west-central Florida

Hydrogeology and simulated effects of ground-water development of the Floridan aquifer system, Southwest Georgia, Northwest Florida, and southernmost Alabama

Conceptualization and analysis of ground-water flow system in the Coastal Plain of Virginia and adjacent parts of Maryland and North Carolina

Hydrogeologic framework of the North Carolina coastal plain

Simulation of ground-water flow of the coastal plain aquifers in parts of Maryland, Delaware, and the District of Columbia

Geochemistry of the northern Atlantic Coastal Plain aquifer system

Geohydrology and water resources of alluvial basins in south-central Arizona and parts of adjacent states

Summary of ground-water hydrology of the Cambrian-Ordovician aquifer system in the northern Midwest, United States