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Federal
National Hydrography Dataset (NHD) - USGS National Map Downloadable Data Collection NGDA 109 recent views
Department 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... -
Federal
National Hydrography Dataset Plus High Resolution (NHDPlus HR) - USGS National Map Downloadable Data Collection
Department of the Interior —
The High Resolution National Hydrography Dataset Plus (NHDPlus HR) is an integrated datset of geospatial data layers, including the most current National Hydrography... -
Federal
DCS Hydraulics Submission for Crook OR
Federal Emergency Management Agency, Department of Homeland Security —
Recent developments in digital terrain and geospatial database management technology make it possible to protect this investment for existing and future projects to a...