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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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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 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, 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, 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: Abbeville, Administrative watershed units, Administrative watershed units, Aiken, Allendale, 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.


map background search result map search result map USGS Topo Map Vector Data (Vector) 4274 Blackwater River MD (published 20231222) Shapefile USGS Topo Map Vector Data (Vector) 8721 Church Creek MD (published 20231222) Shapefile USGS Topo Map Vector Data (Vector) 13406 East New Market MD (published 20231222) FileGDB USGS Topo Map Vector Data (Vector) 17625 Golden Hill MD (published 20231222) FileGDB USGS Topo Map Vector Data (Vector) 23125 Kedges Straits MD (published 20231222) Shapefile USGS Topo Map Vector Data (Vector) 33775 Oxford MD (published 20231222) FileGDB USGS Topo Map Vector Data (Vector) 35790 Point No Point MD (published 20231222) Shapefile USGS Topo Map Vector Data (Vector) 40815 Sharptown MD (published 20231222) FileGDB USGS Topo Map Vector Data (Vector) 45121 Tilghman MD (published 20231222) FileGDB USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 03 (published 20240111) FileGDB USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 03050201 (published 20231215) FileGDB USGS NED 1/3 arc-second Contours for Salisbury W, Maryland 1 x 1 degree (published 20240112) FileGDB USGS National Hydrography Dataset Best Resolution (NHD) - South Carolina (published 20231227) FileGDB USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 02080109 (published 20231215) GeoPackage USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 03050205 (published 20231215) GeoPackage USGS NED 1/3 arc-second Contours for Salisbury W, Maryland 1 x 1 degree (published 20240112) GeoPackage USGS Topo Map Vector Data (Vector) 40368 Seaford West DE (published 20231222) GeoPackage USGS Topo Map Vector Data (Vector) 76405 Chesapeake Bay 2 (All Water) MD (published 20231222) GeoPackage USGS Topo Map Vector Data (Vector) 27655 Mardela Springs MD (published 20231222) GeoPackage USGS Topo Map Vector Data (Vector) 6838 Cambridge MD (published 20231222) GeoPackage USGS Topo Map Vector Data (Vector) 4274 Blackwater River MD (published 20231222) Shapefile USGS Topo Map Vector Data (Vector) 8721 Church Creek MD (published 20231222) Shapefile USGS Topo Map Vector Data (Vector) 13406 East New Market MD (published 20231222) FileGDB USGS Topo Map Vector Data (Vector) 17625 Golden Hill MD (published 20231222) FileGDB USGS Topo Map Vector Data (Vector) 23125 Kedges Straits MD (published 20231222) Shapefile USGS Topo Map Vector Data (Vector) 33775 Oxford MD (published 20231222) FileGDB USGS Topo Map Vector Data (Vector) 35790 Point No Point MD (published 20231222) Shapefile USGS Topo Map Vector Data (Vector) 40815 Sharptown MD (published 20231222) FileGDB USGS Topo Map Vector Data (Vector) 45121 Tilghman MD (published 20231222) FileGDB USGS Topo Map Vector Data (Vector) 40368 Seaford West DE (published 20231222) GeoPackage USGS Topo Map Vector Data (Vector) 76405 Chesapeake Bay 2 (All Water) MD (published 20231222) GeoPackage USGS Topo Map Vector Data (Vector) 27655 Mardela Springs MD (published 20231222) GeoPackage USGS Topo Map Vector Data (Vector) 6838 Cambridge MD (published 20231222) GeoPackage USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 03050205 (published 20231215) GeoPackage USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 02080109 (published 20231215) GeoPackage USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 03050201 (published 20231215) FileGDB USGS NED 1/3 arc-second Contours for Salisbury W, Maryland 1 x 1 degree (published 20240112) FileGDB USGS NED 1/3 arc-second Contours for Salisbury W, Maryland 1 x 1 degree (published 20240112) GeoPackage USGS National Hydrography Dataset Best Resolution (NHD) - South Carolina (published 20231227) FileGDB USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 03 (published 20240111) FileGDB