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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... -
Geologic Atlas: Latrobe folio, Pennsylvania
From the site: “The Geologic Atlas of the United States is a set of 227 folios published by the U.S. Geological Survey between 1894 and 1945. Each folio includes both... -
Geologic Atlas: Masontown-Uniontown folio, Pennsylvania
From the site: “The Geologic Atlas of the United States is a set of 227 folios published by the U.S. Geological Survey between 1894 and 1945. Each folio includes both... -
Karst in the United States: A Digital Map Compilation and Database
From the site: "This report describes new digital maps delineating areas of the United States, including Puerto Rico and the U.S. Virgin Islands, having karst or the potential... -
USGS Water Resources: 1:250,000-scale Hydrologic Units of the United States
From the site: "The Geographic Information Retrieval and Analysis System (GIRAS) was developed in the mid 70s to put into digital form a number of data layers which were of... -
Geologic Atlas: Columbus folio, Ohio
From the site: “The Geologic Atlas of the United States is a set of 227 folios published by the U.S. Geological Survey between 1894 and 1945. Each folio includes both... -
Geologic Atlas: Charleston folio, West Virginia
From the site: “The Geologic Atlas of the United States is a set of 227 folios published by the U.S. Geological Survey between 1894 and 1945. Each folio includes both... -
USGS Mineral Resources: Asbestos mines, prospects, and occurrences in the US
From the site: "Location, type, mineralogy, name, and status for 900 occurrences of asbestiform minerals and fibrous amphiboles." -
Geologic Atlas: Gaines folio, Pennsylvania-New York
From the site: “The Geologic Atlas of the United States is a set of 227 folios published by the U.S. Geological Survey between 1894 and 1945. Each folio includes both... -
USGS Mineral Resources: Illinois geologic map data
From the site: "A GIS database of geologic units and structural features in Illinois, with lithology, age, data structure, and format written and arranged just like the other... -
Geologic Atlas: Standingstone folio, Tennessee
From the site: “The Geologic Atlas of the United States is a set of 227 folios published by the U.S. Geological Survey between 1894 and 1945. Each folio includes both... -
Geologic Atlas: Piedmont folio, West Virginia-Maryland
From the site: “The Geologic Atlas of the United States is a set of 227 folios published by the U.S. Geological Survey between 1894 and 1945. Each folio includes both... -
Geologic Atlas: Franklin Furnace folio, New Jersey
From the site: “The Geologic Atlas of the United States is a set of 227 folios published by the U.S. Geological Survey between 1894 and 1945. Each folio includes both... -
Geologic Atlas: Mount Mitchell folio, North Carolina-Tennessee
From the site: “The Geologic Atlas of the United States is a set of 227 folios published by the U.S. Geological Survey between 1894 and 1945. Each folio includes both... -
Geologic Atlas: Elders Ridge folio, Pennsylvania
From the site: “The Geologic Atlas of the United States is a set of 227 folios published by the U.S. Geological Survey between 1894 and 1945. Each folio includes both... -
Geologic Atlas: Beaver folio, Pennsylvania
From the site: “The Geologic Atlas of the United States is a set of 227 folios published by the U.S. Geological Survey between 1894 and 1945. Each folio includes both... -
Pennsylvania Spatial Data: USGS Geopdfs
From the site: "Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and... -
USGS NGMDB: East Winston-Salem quadrangle
From the National Geologic Map Database site: "Geologic map of the east half of the Winston-Salem quadrangle, North Carolina-Virginia" -
USGS Mineral Resources: Pennsylvania geologic map data
From the site: "A GIS database of geologic units and structural features in Pennsylvania, with lithology, age, data structure, and format written and arranged just like the... -
Geologic Atlas: Pocahontas folio, Virginia-West Virginia
From the site: “The Geologic Atlas of the United States is a set of 227 folios published by the U.S. Geological Survey between 1894 and 1945. Each folio includes both...
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