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    FederalProtected Areas Database of the United States (PAD-US) NGDADepartment of the Interior — This is series-level metadata for the USGS Protected Areas Database of the United States (PAD-US) data released by the United States Geological Survey (USGS). PAD-US...
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    FederalNational Hydrography Dataset (NHD) - USGS National Map Downloadable Data Collection NGDADepartment of the Interior — The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's...
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    FederalUSGS US Topo Map CollectionDepartment of the Interior — Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography,...
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    FederalTerrestrial Ecosystems - Land Surface Forms of the Conterminous United StatesDepartment of the Interior — The U.S. Geological Survey (USGS) has generated land surface form classes for the contiguous United States. These land surface form classes were created as part of an...
