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Federal
National Hydrography Dataset (NHD) - USGS National Map Downloadable Data Collection NGDA 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 Bridge Inventory NGDA recent views
Department of Transportation —
The National Bridge Inventory dataset is as of June 15, 2023 from the Federal Highway Administration (FHWA) and is part of the U.S. Department of Transportation...