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Here you will find map products for Wyoming and Montana related to water resources that lend visual identity to our data. The maps you find in this section were devised by U.S. Geological Survey scientists using Geographic Information Systems that help us interpret the data through spatial and geographic imagery.

Generalized potentiometric surface, estimated depth to water, and estimated saturated thickness of the High Plains aquifer system, March–June 2009, Laramie County, Wyoming

The High Plains aquifer system, commonly called the High Plains aquifer in many publications, is a nationally important water resource that underlies a 111-million-acre area (173,000 square miles) in parts of eight States including Wyoming. Through irrigation of crops with groundwater from the High Plains aquifer system, the area that overlies the aquifer system has become one of the major agricul