Filters: Tags: HU12 (X) > Types: Citation (X)

Filters Date Range Past year (1) Past month (0) Past week (0) Past day (0) Custom range... To   Search Extensions Community (1) Contacts U.S. Geological Survey, National Geospatial Technical Operations Center U.S. Geological Survey USGS - National Geospatial Technical Operations Center (NGTOC) Categories Data (1) Tag Types Theme (2) Place (2) Tag Schemes None (2) NGDA Portfolio Themes (2) Geographic Names Information System (2) ISO 19115 Topic Category (2) Geospatial Platform (1) The National Map Place Thesaurus (1) USGS Metadata Identifier (1) View Results as: JSON ATOM CSV

National Hydrography Dataset (NHD) - USGS National Map Downloadable Data Collection 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: Citation; Tags: Administrative watershed units, Area of Complex Channels, Area to be submerged, Basin, Bay/Inlet, All tags... Boundaries, Boundary, Bridge, Canal/Ditch, Coastline, Connector, Dam/Weir, Drainage area for surface water, Estuary, FileGDB, Flow direction network, Flume, ForeShore, Gaging Station, Gate, GeoPackage, HU10, HU12, HU14, HU16, HU2, HU4, HU6, HU8, HUC, Hazard Zone, Hydrographic, Hydrography, Hydrologic Unit, Hydrologic Unit Code, Hydrologic Units, Ice mass, Inundation Area, Lake, Levee, Line, Lock Chamber, Marsh, NGDA, NGDAID159, National Geospatial Data Asset, Nonearthen Shore, Playa, Point, PointEvent, Pond, Rapids, Reach, Reach code, Reef, Region, Reservoir, River, Rock, Sea/Ocean, Sink/Rise, Sounding Datum Line, Special Use Zone, Special Use Zone Limit, Spillway, Stream, Stream/River, Submerged Stream, Swamp, Topographic, Tunnel, US, USGS:ecd2ad5e-faa2-4291-bcdb-441b7113ea41, Underground Conduit, United States, WBD, Wall, Wash, Water Inland Theme, Water Intake Outflow, Waterfall, Watershed, Watershed Boundaries, Watershed Boundary Dataset, Well, artificial path, boundaries, dams, drainage systems and characteristics, inlandWaters, surface water, surface water systems, Fewer tags USGS National Watershed Boundary Dataset (WBD) Downloadable Data Collection - National Geospatial Data Asset (NGDA) Watershed Boundary Dataset (WBD) The Watershed Boundary Dataset (WBD) from The National Map (TNM) defines the perimeter of drainage areas formed by the terrain and other landscape characteristics. The drainage areas are nested within each other so that a large drainage area, such as the Upper Mississippi River, will be composed of multiple smaller drainage areas, such as the Wisconsin River. Each of these smaller areas can further be subdivided into smaller and smaller drainage areas. The WBD uses six different levels in this hierarchy, with the smallest averaging about 30,000 acres. The WBD is made up of polygons nested into six levels of data respectively defined by Regions, Subregions, Basins, Subbasins, Watersheds, and Subwatersheds. For additional... Types: Citation; Tags: Administrative watershed units, Administrative watershed units, Basin, Basin, Boundaries, All tags... Boundary, Drainage areas for surface water, HU10, HU12, HU14, HU16, HU2, HU4, HU6, HU8, HUC, Hydrographic, Hydrography, Hydrologic Unit Code, Hydrologic Units, Line, NGDA, National Geospatial Data Asset, Point, PointEvent, Region, Region, Sub-basin, Sub-region, Subbasin, Subregion, Subwatershed, Subwatershed, Topographic, US, US, United States, WBD, Water Inland Theme, Watershed, Watershed, Watershed Boundaries, Watershed Boundaries, Watershed Boundary Dataset, boundaries, boundaries, drainage systems and characteristics, inlandWaters, ngda, topographic, Fewer tags