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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 surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water...
Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: AK, AL, Acadia Parish, Adams County, Administrative watershed units, All tags...


    map background search result map search result map USGS National Hydrography Dataset (NHD) Best Resolution for Louisiana 20160415 State or Territory FileGDB 10.1 - Flowlines USGS National Hydrography Dataset (NHD) Best Resolution for Louisiana 20160415 State or Territory FileGDB 10.1 - Flowlines