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Author
U.S. Geological Survey in cooperation with the U.S. Environmental Protection Agency
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Inland Waters
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Institution
Penn State
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Vector
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Search Results
1. National Hydrography Dataset (NHD) Flowline: Pennsylvania (medium resolution)
1999. U.S. Geological Survey in cooperation with the U.S. Environmental Protection Agency. The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the sream segments or reaches that co...
2. National Hydrography Dataset (NHD) Waterbody: Pennsylvania (medium resolution)
1999. U.S. Geological Survey in cooperation with the U.S. Environmental Protection Agency. The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the sream segments or reaches that co...
3. National Hydrography Dataset (NHD) Watersheds: Pennsylvania (medium resolution)
1999. U.S. Geological Survey in cooperation with the U.S. Environmental Protection Agency. The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the sream segments or reaches that co...