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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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These vector contour lines are derived from the 3D Elevation Program using automated and semi-automated processes. They were created to support 1:24,000-scale CONUS and Hawaii, 1:25,000-scale Alaska, and 1:20,000-scale Puerto Rico / US Virgin Island topographic map products, but are also published in this GIS vector format. Contour intervals are assigned by 7.5-minute quadrangle, so this vector dataset is not visually seamless across quadrangle boundaries. The vector lines have elevation attributes (in feet above mean sea level on NAVD88), but this dataset does not carry line symbols or annotation.
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These vector contour lines are derived from the 3D Elevation Program using automated and semi-automated processes. They were created to support 1:24,000-scale CONUS and Hawaii, 1:25,000-scale Alaska, and 1:20,000-scale Puerto Rico / US Virgin Island topographic map products, but are also published in this GIS vector format. Contour intervals are assigned by 7.5-minute quadrangle, so this vector dataset is not visually seamless across quadrangle boundaries. The vector lines have elevation attributes (in feet above mean sea level on NAVD88), but this dataset does not carry line symbols or annotation.
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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, Aitkin County, Alger 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) 13718 Edon, Ohio 20200225 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 16890 Garrett, Indiana 20190704 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 41812 Smithville, Tennessee 20190912 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 508 Alexandria, Tennessee 20190912 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 6944 Campaign, Tennessee 20190912 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 39295 Saint Joe, Indiana 20190704 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 41401 Silver Point, Tennessee 20190912 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 8378 Cherry Valley, Illinois 20210629 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 19137 Hampshire, Illinois 20210628 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 71571 Shabbona Grove, Illinois 20210628 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 23744 Kirkland, Illinois 20210628 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 44060 Sycamore, Illinois 20210629 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 47680 Waterman, Illinois 20210629 for 7.5 x 7.5 minute Shapefile USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 03 (published 20201030) USGS Topo Map Vector Data (Vector) 34431 McFall, Missouri 20210623 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 34802 Perrin, Missouri 20210623 for 7.5 x 7.5 minute Shapefile USGS NED 1/3 arc-second Contours for Nashville E, Tennessee 20190624 1 X 1 degree Shapefile USGS NED 1/3 arc-second Contours for Rome W, Georgia 20200914 1 X 1 degree FileGDB 10.1 NHD 20200615 for Wisconsin State or Territory FileGDB 10.1 Model Version 2.2.1 USGS Topo Map Vector Data (Vector) 13718 Edon, Ohio 20200225 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 16890 Garrett, Indiana 20190704 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 41812 Smithville, Tennessee 20190912 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 508 Alexandria, Tennessee 20190912 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 6944 Campaign, Tennessee 20190912 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 39295 Saint Joe, Indiana 20190704 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 41401 Silver Point, Tennessee 20190912 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 8378 Cherry Valley, Illinois 20210629 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 19137 Hampshire, Illinois 20210628 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 71571 Shabbona Grove, Illinois 20210628 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 23744 Kirkland, Illinois 20210628 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 44060 Sycamore, Illinois 20210629 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 47680 Waterman, Illinois 20210629 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 34431 McFall, Missouri 20210623 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 34802 Perrin, Missouri 20210623 for 7.5 x 7.5 minute Shapefile USGS NED 1/3 arc-second Contours for Nashville E, Tennessee 20190624 1 X 1 degree Shapefile USGS NED 1/3 arc-second Contours for Rome W, Georgia 20200914 1 X 1 degree FileGDB 10.1 USGS National Hydrography Dataset (NHD) Best Resolution for Alabama 20160411 State or Territory FileGDB 10.1 - Flowlines NHD 20200615 for Wisconsin State or Territory FileGDB 10.1 Model Version 2.2.1 USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 03 (published 20201030)