Principal Aquifers of the 48 Conterminous United States, Hawaii, Puerto Rico, and the U.S. Virgin Islands
U.S. Geological Survey (USGS), Upper Midwest Water Science Center
- License
- Public domain
- Commercial
- Yes
- Format
- Shapefile
- Coverage
- Conterminous United States, Hawaii, Puerto Rico and U.S. Virgin Islands
- Last updated
- Added to findgis 31 Oct 2026 · Update frequency Static
Polygons come from the Ground Water Atlas of the United States, published at 1:2,500,000. The year of the layer is 2003.
Source and attribution
- Publisher
- U.S. Geological Survey (USGS), Upper Midwest Water Science Center
- License
- Public domain
- Commercial use
- Yes
- Attribution required
- No
- Modification allowed
- See publisher
- Redistribution allowed
- See publisher
- Share-alike
- No
- Region
- United StatesUS
- Type
- Vector
- Time
- 2003–2003
- Extent
- -179.217.6-64.571.4West, south, east, north. Approximate region extent.
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