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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 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: AL, Administrative watershed units, Alabama, Alcorn County, Area of Complex Channels, 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: Adams County, Administrative watershed units, Administrative watershed units, Allegany County, Allegany County, All tags...


map background search result map search result map USGS National Hydrography Dataset (NHD) Best Resolution for Alabama 20160411 State or Territory FileGDB 10.1 - Flowlines USGS Topo Map Vector Data (Vector) 6838 Cambridge, Maryland 20170223 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 76405 Chesapeake Bay 2 (All Water), Maryland 20170223 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 76409 Chesapeake Bay 1 (All Water), Maryland 20170226 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 8721 Church Creek, Maryland 20170225 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 75987 Deale OE E, Maryland 20170222 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 75987 Deale OE E, Maryland 20170222 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 13406 East New Market, Maryland 20170222 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 16174 Fowling Creek, Maryland 20170222 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 21360 Hudson, Maryland 20170223 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 33775 Oxford, Maryland 20170223 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 36781 Queenstown, Maryland 20170222 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 36781 Queenstown, Maryland 20170222 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 39360 Saint Michaels, Maryland 20170310 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 45121 Tilghman, Maryland 20170226 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 49953 Wye Mills, Maryland 20170222 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 49953 Wye Mills, Maryland 20170222 for 7.5 x 7.5 minute FileGDB 10.1 USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 03 (published 20190202) USGS National Hydrography Dataset (NHD) Best Resolution 20190215 for Pennsylvania State or Territory FileGDB 10.1 Model Version 2.2.1 USGS National Hydrography Dataset Plus High Resolution (NHDPlus HR) for 4-digit Hydrologic Unit - 0206 (published 20180813) USGS Topo Map Vector Data (Vector) 6838 Cambridge, Maryland 20170223 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 76405 Chesapeake Bay 2 (All Water), Maryland 20170223 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 76409 Chesapeake Bay 1 (All Water), Maryland 20170226 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 8721 Church Creek, Maryland 20170225 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 75987 Deale OE E, Maryland 20170222 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 75987 Deale OE E, Maryland 20170222 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 13406 East New Market, Maryland 20170222 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 16174 Fowling Creek, Maryland 20170222 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 21360 Hudson, Maryland 20170223 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 33775 Oxford, Maryland 20170223 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 36781 Queenstown, Maryland 20170222 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 36781 Queenstown, Maryland 20170222 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 39360 Saint Michaels, Maryland 20170310 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 45121 Tilghman, Maryland 20170226 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 49953 Wye Mills, Maryland 20170222 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 49953 Wye Mills, Maryland 20170222 for 7.5 x 7.5 minute FileGDB 10.1 USGS National Hydrography Dataset Plus High Resolution (NHDPlus HR) for 4-digit Hydrologic Unit - 0206 (published 20180813) USGS National Hydrography Dataset (NHD) Best Resolution for Alabama 20160411 State or Territory FileGDB 10.1 - Flowlines USGS National Hydrography Dataset (NHD) Best Resolution 20190215 for Pennsylvania State or Territory FileGDB 10.1 Model Version 2.2.1 USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 03 (published 20190202)