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You searched for: Publisher Geological Survey (U.S.) Remove constraint Publisher: Geological Survey (U.S.) Subject Groundwater Remove constraint Subject: Groundwater Place Arizona Remove constraint Place: Arizona
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1. Principal Aquifers of the 48 Conterminous United States, Hawaii, Puerto Rico, and the U.S. Virgin Islands

2003. Geological Survey (U.S.). Water Resources Division. Wisconsin District. This polygon shapefile contains the shallowest principal aquifers of the conterminous United States, Hawaii, Puerto Rico, and the U.S. Virgin Islan... Geological Survey (U.S.).