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    Federal1/3rd arc-second Digital Elevation Models (DEMs) - USGS National Map 3DEP Downloadable Data Collection NGDADepartment of the Interior — This is a tiled collection of the 3D Elevation Program (3DEP) and is 1/3 arc-second (approximately 10 m) resolution. The 3DEP data holdings serve as the elevation...
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    FederalAttributes for NHDPlus Catchments (Version 1.1) for the Conterminous United States: Hydrologic Landscape RegionsDepartment of the Interior — This data set represents the area of Hydrologic Landscape Regions (HLR) compiled for every catchment of NHDPlus for the conterminous United States. The source data...
