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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, Albany, Allegany, 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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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...
thumbnail
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...


map background search result map search result map ADMMR Photo Archive file: Congress 23-38 ADMMR Photo Archive file: Congress 23-79 USGS Topo Map Vector Data (Vector) 15972 Fort Niagara NY (published 20231222) Shapefile USGS Topo Map Vector Data (Vector) 37060 Ransomville NY (published 20231221) Shapefile USGS National Map Index Names (published 20240120) Shapefile USGS National Boundary Dataset (NBD) in New York State or Territory (published 20240215) FileGDB USGS 1:24000-scale Quadrangle for Niagara, NC 1957 USGS 1:24000-scale Quadrangle for Niagara, NC 1976 USGS US Topo 7.5-minute map for Barker, NY 2016 USGS US Topo 7.5-minute map for Fort Niagara, NY-ON 2016 USGS US Topo 7.5-minute map for Medina, NY 2016 USGS US Topo 7.5-minute map for Niagara Falls, NY-ON 2013 USGS US Topo 7.5-minute map for Tonawanda East, NY 2016 USGS US Topo 7.5-minute map for Wilson, NY 2016 USGS National Hydrography Dataset Best Resolution (NHD) - New York (published 20231227) FileGDB USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 4 - 0428 (published 20231212) GeoPackage USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 04280002 (published 20231216) GeoPackage USGS NED 1/3 arc-second Contours for Toronto E, New York 1 x 1 degree (published 20240112) GeoPackage USGS Topo Map Vector Data (Vector) 2407 Barker NY (published 20231221) GeoPackage USGS Topo Map Vector Data (Vector) 16936 Gasport NY (published 20231221) GeoPackage ADMMR Photo Archive file: Congress 23-38 ADMMR Photo Archive file: Congress 23-79 USGS Topo Map Vector Data (Vector) 15972 Fort Niagara NY (published 20231222) Shapefile USGS Topo Map Vector Data (Vector) 37060 Ransomville NY (published 20231221) Shapefile USGS 1:24000-scale Quadrangle for Niagara, NC 1957 USGS 1:24000-scale Quadrangle for Niagara, NC 1976 USGS US Topo 7.5-minute map for Barker, NY 2016 USGS US Topo 7.5-minute map for Fort Niagara, NY-ON 2016 USGS US Topo 7.5-minute map for Medina, NY 2016 USGS US Topo 7.5-minute map for Niagara Falls, NY-ON 2013 USGS US Topo 7.5-minute map for Tonawanda East, NY 2016 USGS US Topo 7.5-minute map for Wilson, NY 2016 USGS Topo Map Vector Data (Vector) 2407 Barker NY (published 20231221) GeoPackage USGS Topo Map Vector Data (Vector) 16936 Gasport NY (published 20231221) GeoPackage USGS NED 1/3 arc-second Contours for Toronto E, New York 1 x 1 degree (published 20240112) GeoPackage USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 4 - 0428 (published 20231212) GeoPackage USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 04280002 (published 20231216) GeoPackage USGS National Map Index Names (published 20240120) Shapefile USGS National Boundary Dataset (NBD) in New York State or Territory (published 20240215) FileGDB USGS National Hydrography Dataset Best Resolution (NHD) - New York (published 20231227) FileGDB