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The High Resolution National Hydrography Dataset Plus (NHDPlus HR) is an integrated set of geospatial data layers, including the National Hydrography Dataset (NHD), National Watershed Boundary Dataset (WBD), and 3D Elevation Program Digital Elevation Model (3DEP DEM). The NHDPlus HR combines the NHD, 3DEP DEMs, and WBD to a data suite that includes the NHD stream network with linear referencing functionality, the WBD hydrologic units, elevation-derived catchment areas for each stream segment, "value added attributes" (VAAs), and other features that enhance hydrologic data analysis and routing.
Tags: 4-digit hydrologic unit, Accomack County, Albemarle County, Alleghany County, Amelia County, All tags...
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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...
Tags: Accomack, Administrative watershed units, Administrative watershed units, Albemarle, Alleghany, All tags...
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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...
Tags: Accomack, Administrative watershed units, Administrative watershed units, Albemarle, Alleghany, All tags...
thumbnail
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...
Tags: Accomack, Administrative watershed units, Administrative watershed units, Albemarle, Alleghany, All tags...


    map background search result map search result map USGS National Hydrography Dataset Plus High Resolution (NHDPlus HR) for Hydrological Unit (HU) 4 - 0208 (published 20220324) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 4 - 0208 (published 20231213) Shapefile USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 4 - 0208 (published 20231213) FileGDB USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 4 - 0208 (published 20231213) GeoPackage USGS National Hydrography Dataset Plus High Resolution (NHDPlus HR) for Hydrological Unit (HU) 4 - 0208 (published 20220324) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 4 - 0208 (published 20231213) Shapefile USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 4 - 0208 (published 20231213) FileGDB USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 4 - 0208 (published 20231213) GeoPackage