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The High Resolution National Hydrography Dataset Plus (NHDPlus HR) is an integrated set of geospatial data layers, including the best available National Hydrography Dataset (NHD), the 10-meter 3D Elevation Program Digital Elevation Model (3DEP DEM), and the National Watershed Boundary Dataset (WBD). The NHDPlus HR combines the NHD, 3DEP DEMs, and WBD to create a stream network with linear referencing, feature naming, "value added attributes" (VAAs), elevation-derived catchments, and other features for hydrologic data analysis. The stream network with linear referencing is a system of data relationships applied to hydrographic systems so that one stream reach "flows" into another and "events" can be tied to and traced...
Tags: Anne Arundel County, Baltimore County, Baltimore County, Calvert County, Caroline County, All tags...
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The High Resolution National Hydrography Dataset Plus (NHDPlus HR) is an integrated set of geospatial data layers, including the best available National Hydrography Dataset (NHD), the 10-meter 3D Elevation Program Digital Elevation Model (3DEP DEM), and the National Watershed Boundary Dataset (WBD). The NHDPlus HR combines the NHD, 3DEP DEMs, and WBD to create a stream network with linear referencing, feature naming, "value added attributes" (VAAs), elevation-derived catchments, and other features for hydrologic data analysis. The stream network with linear referencing is a system of data relationships applied to hydrographic systems so that one stream reach "flows" into another and "events" can be tied to and traced...
Tags: Abbeville County, Aiken County, Alexander County, Allendale County, Anderson County, All tags...
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.
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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 County, Adams County, Administrative watershed units, Administrative watershed units, Alamance 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: Administrative watershed units, Administrative watershed units, Androscoggin County, Area of Complex Channels, Area to be submerged, 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 County, Administrative watershed units, Administrative watershed units, Albemarle County, Alleghany County, All tags...
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The Watershed Boundary Dataset (WBD) is a comprehensive aggregated collection of hydrologic unit data consistent with the national criteria for delineation and resolution. It defines the areal extent of surface water drainage to a point except in coastal or lake front areas where there could be multiple outlets as stated by the "Federal Standards and Procedures for the National Watershed Boundary Dataset (WBD)" "Standard" (https://pubs.usgs.gov/tm/11/a3/). Watershed boundaries are determined solely upon science-based hydrologic principles, not favoring any administrative boundaries or special projects, nor particular program or agency. This dataset represents the hydrologic unit boundaries to the 12-digit (6th level)...
Tags: 10-digit, 12-digit, 14-digit, 16-digit, 2-digit, 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: Administrative watershed units, Administrative watershed units, Area of Complex Channels, Area to be submerged, Basin, 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: Administrative watershed units, Administrative watershed units, Androscoggin County, Area of Complex Channels, Area to be submerged, All tags...
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.


map background search result map search result map USGS Combined Vector for Hanover, Pennsylvania 20160730 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 27419 Manchester, Maryland 20170222 for 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Safe Harbor, Pennsylvania 20160730 7.5 x 7.5 minute Shapefile USGS Combined Vector for York Haven, Pennsylvania 20160729 7.5 x 7.5 minute Shapefile USGS Combined Vector for Hampton, Pennsylvania 20160801 7.5 x 7.5 minute Shapefile USGS Combined Vector for Hog Island, Virginia 20160713 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Lemoyne, Pennsylvania 20160817 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Williamsburg, Virginia 20160713 7.5 x 7.5 minute FileGDB 10.1 USGS US Topo 7.5-minute map for Bradshaw, NE 2017 USGS US Topo 7.5-minute map for York North, NE 2017 USGS US Topo 7.5-minute map for York South, NE 2017 USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 03 (published 20190102) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 8 - 01060001 (published 20190104) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 4 - 0208 (published 20190101) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 8 - 03050106 (published 20190107) USGS National Hydrography Dataset (NHD) Best Resolution 20181220 for Virginia State or Territory Shapefile Model Version 2.2.1 USGS US Topo 7.5-minute map for Isles of Shoals OE W, NH,ME 2018 USGS National Hydrography Dataset Plus High Resolution (NHDPlus HR) for 4-digit Hydrologic Unit - 0206 (published 20180813) USGS National Hydrography Dataset Plus High Resolution (NHDPlus HR) for 4-digit Hydrologic Unit - 0305 (published 20180813) USGS National Hydrography Dataset (NHD) Best Resolution 20181219 for Maine State or Territory Shapefile Model Version 2.2.1 USGS Combined Vector for Hanover, Pennsylvania 20160730 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 27419 Manchester, Maryland 20170222 for 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Safe Harbor, Pennsylvania 20160730 7.5 x 7.5 minute Shapefile USGS Combined Vector for York Haven, Pennsylvania 20160729 7.5 x 7.5 minute Shapefile USGS Combined Vector for Hampton, Pennsylvania 20160801 7.5 x 7.5 minute Shapefile USGS Combined Vector for Hog Island, Virginia 20160713 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Lemoyne, Pennsylvania 20160817 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Williamsburg, Virginia 20160713 7.5 x 7.5 minute FileGDB 10.1 USGS US Topo 7.5-minute map for Bradshaw, NE 2017 USGS US Topo 7.5-minute map for York North, NE 2017 USGS US Topo 7.5-minute map for York South, NE 2017 USGS US Topo 7.5-minute map for Isles of Shoals OE W, NH,ME 2018 USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 8 - 03050106 (published 20190107) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 8 - 01060001 (published 20190104) USGS National Hydrography Dataset Plus High Resolution (NHDPlus HR) for 4-digit Hydrologic Unit - 0206 (published 20180813) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 4 - 0208 (published 20190101) USGS National Hydrography Dataset Plus High Resolution (NHDPlus HR) for 4-digit Hydrologic Unit - 0305 (published 20180813) USGS National Hydrography Dataset (NHD) Best Resolution 20181219 for Maine State or Territory Shapefile Model Version 2.2.1 USGS National Hydrography Dataset (NHD) Best Resolution 20181220 for Virginia State or Territory Shapefile Model Version 2.2.1 USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 03 (published 20190102)