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Aquifers
This map layer contains the shallowest principal aquifers of the conterminous United States, Hawaii, Puerto Rico, and the U.S. Virgin Islands, portrayed as... -
USGS Water Resources: Physiographic Provinces, Aquifer Outcrops and Recharge ...
From the site: "This dataset is a coverage of the physiographic provinces, aquifer outcrops and recharge rates for Tennessee. Each polygon is attributed with its associated... -
USGS Water Resources: Principal Aquifers of the 48 Conterminous United States...
From the site: "This map layer contains the shallowest principal aquifers of the conterminous United States, Hawaii, Puerto Rico, and the U.S. Virgin Islands, portrayed as... -
Spatial Data Sets Available on the WRD NSDI Node
USGS Water information; multiple downloadable datasets with spacial data and metadata. Sets range from surface geology to historical data about aquifers.
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