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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: AL, Administrative watershed units, Administrative watershed units, Alabama, 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.


map background search result map search result map USGS Topo Map Vector Data (Vector) 3156 Belle Chasse, Louisiana 20201209 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 75972 Chandeleur Light OE W, Louisiana 20201209 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 8306 Chef Menteur, Louisiana 20201209 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 74899 Curlew Islands, Louisiana 20201208 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 76011 Freemason Island OE W, Louisiana 20201208 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 14399 English Lookout, Louisiana 20201208 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 72360 False Mouth Bayou, Louisiana 20201209 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 76066 Lake Athanasio OE S, Louisiana 20201208 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 24404 Lake Cuatro Caballo, Louisiana 20201209 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 24425 Lake Eugenie, Louisiana 20201208 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 24425 Lake Eugenie, Louisiana 20201208 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 27860 Martello Castle, Louisiana 20201208 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 31812 New Orleans East, Louisiana 20201208 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 76150 Point Chicot OE S, Louisiana 20201208 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 35817 Pointe aux Marchettes, Louisiana 20201209 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 45013 Three Mile Bay, Louisiana 20201209 for 7.5 x 7.5 minute FileGDB 10.1 USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 03 (published 20201030) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 4 - 0317 (published 20201202) USGS NED 1/3 arc-second Contours for Breton Sound W, Louisiana 20201208 1 X 1 degree FileGDB 10.1 USGS Topo Map Vector Data (Vector) 24335 Lake Athanasio, Louisiana 20201209 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 3156 Belle Chasse, Louisiana 20201209 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 75972 Chandeleur Light OE W, Louisiana 20201209 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 8306 Chef Menteur, Louisiana 20201209 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 74899 Curlew Islands, Louisiana 20201208 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 76011 Freemason Island OE W, Louisiana 20201208 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 14399 English Lookout, Louisiana 20201208 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 72360 False Mouth Bayou, Louisiana 20201209 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 76066 Lake Athanasio OE S, Louisiana 20201208 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 24404 Lake Cuatro Caballo, Louisiana 20201209 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 24425 Lake Eugenie, Louisiana 20201208 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 24425 Lake Eugenie, Louisiana 20201208 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 27860 Martello Castle, Louisiana 20201208 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 31812 New Orleans East, Louisiana 20201208 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 76150 Point Chicot OE S, Louisiana 20201208 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 35817 Pointe aux Marchettes, Louisiana 20201209 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 45013 Three Mile Bay, Louisiana 20201209 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 24335 Lake Athanasio, Louisiana 20201209 for 7.5 x 7.5 minute Shapefile USGS NED 1/3 arc-second Contours for Breton Sound W, Louisiana 20201208 1 X 1 degree FileGDB 10.1 USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 4 - 0317 (published 20201202) USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 03 (published 20201030)