USGS Watershed Boundary Dataset (WBD) Overlay Map Service from The National Map

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...

Categories: Data; Types: ArcGIS REST Map Service, Map Service; Tags: HU, HU10, HU12, HU14, HU16, All tags... HU2, HU4, HU6, HU8, Hydrography, NGP-TNM, NHD, Overlay Map Service, REST, US, United States, WBD, WMS, Water – Inland, a-16, basin, canal, dam, ditch, drainage, gage, gaging station, hydrography, hydrologic unit, inlandWaters, lake, marsh, ngda, pond, region, reservoir, river, spring, stream, subbasin, subregion, subwatershed, swamp, water, water - inland, watershed, well, Fewer tags

USGS Hydrography (NHD) Overlay Map Service from The National Map - National Geospatial Data Asset (NGDA) National Hydrography Dataset (NHD)

The USGS National Hydrography Dataset (NHD) service from The National Map (TNM) is a comprehensive set of digital spatial data that encodes information about naturally occurring and constructed bodies of surface water (lakes, ponds, and reservoirs), paths through which water flows (canals, ditches, streams, and rivers), and related entities such as point features (springs, wells, stream gages, and dams). The information encoded about these features includes classification and other characteristics, delineation, geographic name, position and related measures, a "reach code" through which other information can be related to the NHD, and the direction of water flow. The network of reach codes delineating water and...

Types: Citation; Tags: HU, Hydrography, NGDA, NGP-TNM, NHD, All tags... National Geospatial Data Asset, Overlay Map Service, REST, US, United States, WBD, WMS, Water Inland Theme, a-16, basin, canal, dam, ditch, drainage, gage, gaging station, hydrography, hydrologic unit, inlandWaters, lake, marsh, pond, region, reservoir, river, spring, stream, subbasin, subregion, subwatershed, swamp, water, water - inland, watershed, well, Fewer tags

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

12-digit hydrologic unit outlet (pour) points for the NHDPlus V2.1 WBD snapshot: "vector" pour points (vpp)

This dataset represents one of three derived outlets or "pour points" for each 12-digit hydrologic unit (HU12) in the Watershed Boundary Dataset (WBD) snapshot delivered with NHDPlus V2.1. The three related pour point locations, each delivered in a stand-alone dataset, are: "from" (fpp) and "to" (tpp) points that identify the location where flow leaves the HU12 polygon based on a flow direction raster, and a third "vector pour point" (vpp) selected "upstream" used to identify flow confluences near the "from" and "to" pour point locations. The points are derived from the NHDPlus V2.1 flow direction rasters and the WBD snapshot delivered with NHDPlus V2.1. This metadata document describes the "vector" pourpoints (vpp).

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Conterminous United States, Hydrologic Unit, NHDPlus V2.1, National Hydrography Dataset Plus version 2.1, Outlet point, All tags... Pour point, WBD, Watershed Boundary Dataset, inlandWaters, Fewer tags

USGS Watershed Boundary Dataset (WBD) Stewardship Plan Objectives for FY15 - The National Map

U.S. Geological Survey, Department of the Interior - The annual Watershed Boundary Dataset (WBD) stewardship plan is to maintain watershed boundary data through usage of WBD edit tools over the United States and its territories. WBD for the nation has been collected and is now in maintenance mode. Interested parties who wish to become a stewardship partner with the USGS in FY15 or in future years should contact a USGS Geospatial Liaison - http://liaisons.usgs.gov/geospatial/documents/TNM_Partnership_User_ContactList.pdf. To find out more about watershed boundary stewardship go to http://nhd.usgs.gov/wbd.html or http://nhd.usgs.gov/WBDstewardshipInfoSheet.pdf

Tags: HU, HUC, Hydrography, WBD, Water - Inland, All tags... Watershed Boundary Dataset, acquisition plan, basin, boundary, catchment, drainage, hydrologic unit, hydrologic unit code, inlandWaters, region, stewardship plan, subbasin, subregion, subwatershed, watershed, Fewer tags

12-digit hydrologic unit outlet (pour) points for the NHDPlus V2.1 WBD snapshot: "from" pour points (fpp)

This dataset represents one of three derived outlets or "pour points" for each 12-digit hydrologic unit (HU12) in the Watershed Boundary Dataset (WBD) snapshot delivered with NHDPlus V2.1. The three related pour point locations, each delivered in a stand-alone dataset, are: "from" (fpp) and "to" (tpp) points that identify the location where flow leaves the HU12 polygon based on a flow direction raster, and a third "vector pour point" (vpp) selected "upstream" used to identify flow confluences near the "from" and "to" pour point locations. The points are derived from the NHDPlus V2.1 flow direction rasters and the WBD snapshot delivered with NHDPlus V2.1. This metadata document describes the "from" pourpoints (fpp).

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Conterminous United States, Hydrologic Unit, NHDPlus V2.1, National Hydrography Dataset Plus version 2.1, Outlet point, All tags... Pour point, WBD, Watershed Boundary Dataset, inlandWaters, Fewer tags

National Hydrography Dataset Plus High Resolution (NHDPlus HR) - USGS National Map Downloadable Data Collection

The High Resolution National Hydrography Dataset Plus (NHDPlus HR) is an integrated datset of geospatial data layers, including the most current National Hydrography Dataset (NHD), the 10-meter 3D Elevation Program Digital Elevation Model (3DEP DEM), and the National Watershed Boundary Dataset (WBD). The NHDPlus HR combines the NHD, 3DEP DEMs, and WBD to create a stream network with linear referencing, feature naming, "value added attributes" (VAAs), elevation-derived catchments, and other features for hydrologic data analysis. The stream network with linear referencing is a system of data relationships applied to hydrographic systems so that one stream reach "flows" into another and "events" can be tied to and...

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, NHDPlus High Resolution (NHDPlus HR), 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:0826ab39-e5bd-47e6-ba8f-56f340094f81, Underground Conduit, United States, WBD, Wall, Wash, Water Intake Outflow, Waterfall, Watershed, Watershed Boundaries, Watershed Boundary Dataset, Well, artificial path, boundaries, cartography, catchment, dams, digital elevation models, drainage basins, drainage systems and characteristics, earth sciences, elevation, environment, geographic information systems, geoscientificInformation, geospatial analysis, hydrographic datasets, hydrology, imageryBaseMapsEarthCover, inlandWaters, land surface characteristics, river reaches, streamflow, streamflow data, surface water, surface water quality, surface water systems, topography, water resources, watersheds, Fewer tags

USGS Groundwater Data for the Nation - National Water Information System (NWIS)

These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. The USGS compiles online access to water-resources data collected at approximately 1.5 million sites in all 50 States, the District of Columbia, Puerto Rico, the Virgin Islands, Guam, American Samoa and the Commonwealth of the Northern Mariana Islands.

Tags: Alabama, Alaska, American Samoa, Arizona, Arkansas, All tags... California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Guam, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, NSDI, NWIS, National Water Information System:, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Puerto Rico, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, USGS Science Data Catalog (SDC), United Staes, Utah, Vermont, Virgin Islands, Virginia, Washington, West Virginia, Wisconsin, Wyoming, active water monitoring locations, administrative and political boundaries, agriculture and farming, annual groundwater data, annual groundwater statistics, atmospheric and climate, biology and ecology, business and economic, cadastral, cultural, society, and demographic, current groundwater conditions, current water condition, daily groundwater data, daily groundwater data, daily groundwater statistics, facilities and structures, field samples, gaging stations, geological and geophysical, ground water, ground-water, groundwater, groundwater data, historical groundwater observations, human health and diease, hydrologic unit, hydrology, hydrology, inland waters, inland waters, locations and geodetic networks, monthly groundwater data, monthly groundwater statistics, oceans and estuaries, real-time water data, site information, time-series data, utilities and communication, water data, water flow, water information, water level, water levels, water statistics, water table, Fewer tags

Watershed Boundary Dataset, Hydrologic Unit Code 10 for the Northeast

This data set is a complete digital hydrologic unit boundary layer of the Subbasin (10-digit) 5th level for the entire United States, clipped to the Northeast. A hydrologic unit (HU) is a drainage area delineated to nest a multi-level, hierarchical drainage system. Its boundaries are defined by a hydrographic and topographic criteria that delineate an area of land upstream from a specific point on a river, stream, or similar surfaces waters. An HU can accept surface water directly from upstream drainage areas, and indirectly from associated surface areas such as remnant, non-contributing, and diversions to form a drainage area with single or multiple outlet points. HUs are only synonymous with classic watersheds...

Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: Canada, HUC, HUC8, Mexico, Puerto Rico, All tags... U.S., U.S. Territories, United States, Virgin Islands, WBD, Watershed Boundary Dataset, basin, boundaries, boundaries, hydrologic unit, hydrologic unit code, hydrology, inlandWaters, region, sub-basin, sub-region, subwatershed, watershed, watershed boundaries, Fewer tags

USGS Water-Quality Data for the Nation - National Water Information System (NWIS)

These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. The USGS compiles online access to water-resources data collected at approximately 1.5 million sites in all 50 States, the District of Columbia, Puerto Rico, the Virgin Islands, Guam, American Samoa and the Commonwealth of the Northern Mariana Islands.

Categories: pre-SM502.8; Tags: Alabama, Alaska, American Samoa, Arizona, Arkansas, All tags... California, Colorado, Commonwealth of the Northern Mariana Islands, Connecticut, Delaware, District of Columbia, Florida, Georgia, Guam, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, NSDI, NWIS, National Water Information System Mapper, National Water Information System: Mapper, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Northern Mariana Islands, Ohio, Oklahoma, Oregon, Pennsylvania, Puerto Rico, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, USGS Science Data Catalog (SDC), United Staes, Utah, Vermont, Virgin Islands, Virginia, Washington, West Virginia, Wisconsin, Wyoming, active water monitoring locations, administrative and political boundaries, agriculture and farming, annual water data, atmospheric and climate, biology and ecology, business and economic, cadastral, cultural, society, and demographic, current water condition, current water conditions, daily, drainage basin, elevation and derived products, facilities and structures, field samples, gaging stations, geological and geophysical, ground water, ground-water, groundwater, groundwater data, human health and diease, hydrologic unit, hydrology, hydrology, imagery and base maps, inland waters, inland waters, lakes, locations and geodetic networks, oceans and estuaries, real-time water data, site information, streamflow, streams, surface water, surface-water data, time-series data, utilities and communication, water data, water flow unit, water information, water level, water levels, water quality, water statistics, water table, water temperature, water use, water use data, water web services, water-quality data, weekly, Fewer tags

1:250,000-scale Hydrologic Units of the United States

These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. The Geographic Information Retrieval and Analysis System (GIRAS) was developed in the mid 70s to put into digital form a number of data layers which were of interest to the USGS. One of these data layers was the Hydrologic Units. The map is based on the Hydrologic Unit Maps published by the U.S. Geological Survey Office of Water Data Coordination, together with the list descriptions and name of region, subregion, accounting units,...

Categories: pre-SM502.8; Tags: Conterminous United States, NSDI, USGS Science Data Catalog (SDC), environment, geoscientificInformation, All tags... hydrologic unit, inlandWaters, inlandWaters, watersheds, Fewer tags

USGS Surface-Water Data for the Nation - National Water Information System (NWIS)

These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. The USGS compiles online access to water-resources data collected at approximately 1.5 million sites in all 50 States, the District of Columbia, Puerto Rico, the Virgin Islands, Guam, American Samoa and the Commonwealth of the Northern Mariana Islands.

Categories: pre-SM502.8; Tags: Alabama, Alaska, American Samoa, Arizona, Arkansas, All tags... California, Colorado, Commonwealth of the Northern Mariana Islands, Connecticut, Delaware, District of Columbia, Florida, Georgia, Guam, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, NSDI, NWIS, National Water Information System, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Northern Mariana Islands, Ohio, Oklahoma, Oregon, Pennsylvania, Puerto Rico, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, USGS Science Data Catalog (SDC), United Staes, Utah, Vermont, Virgin Islands, Virginia, Washington, West Virginia, Wisconsin, Wyoming, active water monitoring locations, administrative and political boundaries, agriculture and farming, annual water statistics, atmospheric and climate, biology and ecology, business and economic, cadastral, cultural, society, and demographic, current water condition, current water conditions, daily water data, daily water statistics, elevation and derived products, field measurements, field samples, gaging stations, geological and geophysical, historical water observations, human health and diease, hydrologic unit, hydrology, hydrology, imagery and base maps, inland waters, inland waters, lakes, locations and geodetic networks, monthly water statistics, oceans and estuaries, peak-flow data, real-time water data, streamflow, streams, surface water data, tutorial, utilities and communication, water information, water level, water levels, water statistics, water statistics, water table, water temperature, Fewer tags

USGS Water Use Data for the Nation - National Water Information System (NWIS)

These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. The U.S. Geological Survey's National Water-Use Information Program is responsible for compiling and disseminating the nation's water-use data. The USGS works in cooperation with local, State, and Federal environmental agencies to collect water-use information. USGS compiles these data to produce water-use information aggregated at the county, state, and national levels. Every five years, data at the county level are compiled into...

Categories: pre-SM502.8; Tags: Alabama, Alaska, American Samoa, Arizona, Arkansas, All tags... California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Guam, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, NSDI, NWIS, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Puerto Rico, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, USGS Science Data Catalog (SDC), United Staes, Utah, Vermont, Virgin Islands, Virginia, Washington, West Virginia, Wisconsin, Wyoming, administrative and political boundaries, agriculture and farming, annual water data, atmospheric and climate, biology and ecology, business and economic, cadastral, cultural, society, and demographic, current water conditions, daily, drainage basin, facilities and structures, field samples, gaging stations, geological and geophysical, hydrologic unit, hydrology, hydrology, inland waters, inland waters, lakes, locations and geodetic networks, oceans and estuaries, site information, streams, time-series data, utilities and communication, water data, water flow unit, water information, water level, water table, water temperature, water use, water use data, weekly, Fewer tags

12-Digit Hydrologic Unit Outlet Locations for Selected Watersheds Draining to the Gulf of Mexico in the South-Central and Southeastern United States, Derived from the USGS Watershed Boundary Dataset (dated August 13, 2020) and NHDPlus version 2.1

This USGS data release includes a shapefile of outlet point locations for 12-digit hydrologic units (HU12s) from the Watershed Boundary Dataset (WBD), dated August 13, 2020 (U.S. Geological Survey and others, 2020), draining to the Gulf of Mexico in the south-central and southeastern United States. The outlet locations were derived by combining the WBD boundaries with flow direction grids from the National Hydrography Dataset Plus (NHDPlus) v 2.1 (U.S. Environmental Protection Agency and U.S. Geological Survey, 2012). Most of the outlet locations were determined by finding the cell with highest flow accumulation from the NHDPlus flow-direction grids within each WBD HU12 boundary. Some locations were found to be...

Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Alabama, Arkansas, Ecology, Florida, Georgia, All tags... Gulf of Mexico, Hydrology, Kentucky, Louisiana, Mississippi, Missouri, NHDPlus, Oklahoma, RESTORE, RESTORE, Tennessee, Texas, USGS Science Data Catalog (SDC), WBD, Water Resources, Watershed Boundary Dataset, coastal ecosystems, ecosystems, estuarine ecosystems, flow direction, hydrologic unit, inlandWaters, outlet, pour point, watershed, Fewer tags

12-digit hydrologic unit outlet (pour) points for the NHDPlus V2.1 WBD snapshot: "to" pour points (tpp)

This dataset represents one of three derived outlets or "pour points" for each 12-digit hydrologic unit (HU12) in the Watershed Boundary Dataset (WBD) snapshot delivered with NHDPlus V2.1. The three related pour point locations, each delivered in a stand-alone dataset, are: "from" (fpp) and "to" (tpp) points that identify the location where flow leaves the HU12 polygon based on a flow direction raster, and a third "vector pour point" (vpp) selected "upstream" used to identify flow confluences near the "from" and "to" pour point locations. The points are derived from the NHDPlus V2.1 flow direction rasters and the WBD snapshot delivered with NHDPlus V2.1. This metadata document describes the "to" pourpoints (tpp).

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Conterminous United States, Hydrologic Unit, NHDPlus V2.1, National Hydrography Dataset Plus version 2.1, Outlet point, All tags... Pour point, WBD, Watershed Boundary Dataset, inlandWaters, Fewer tags

Drainage basins of selected streamgages in West Virginia through 2020

Drainage basin areas for 376 USGS streamgages in West Virginia and adjacent states were delineated digitally. The USGS Watershed Boundary Dataset HUC12 sub-watershed lines were used as outer limits of basins, and heads-up digitizing was used to delineate boundaries from the stream gage to the HUC12 boundary. The USGS National Map was used, as background, to show both contour lines and digital elevation to highlight drainage basin divides, ridges, and valleys. Basins were delineated for (1) all active continuous-flow and crest-stage streamgages, in West Virginia, through water year 2020, (2) selected inactive streamgages, in West Virginia and adjacent states, that were used in the flood-frequency report prepared...

Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Basin boundary, Drainage area, Drainage divide, Hydrologic Unit, Kentucky, All tags... Maryland, New York, North Carolina, Ohio, Pennsylvania, Stream gage upstream area, USGS, USGS Science Data Catalog (SDC), Virginia, Water Resources, West Virginia, digital data, drainage area, drainage basin, gaging station, inlandWaters, watershed, Fewer tags

Watershed Boundary Dataset, Hydrologic Unit Code 8 for the Northeast

This data set is a complete digital hydrologic unit boundary layer of the Subbasin (8-digit) 4th level for the entire United States, clipped to the Northeast. A hydrologic unit (HU) is a drainage area delineated to nest a multi-level, hierarchical drainage system. Its boundaries are defined by a hydrographic and topographic criteria that delineate an area of land upstream from a specific point on a river, stream, or similar surfaces waters. An HU can accept surface water directly from upstream drainage areas, and indirectly from associated surface areas such as remnant, non-contributing, and diversions to form a drainage area with single or multiple outlet points. HUs are only synonymous with classic watersheds...

Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: Canada, HUC, HUC8, Mexico, Puerto Rico, All tags... U.S., U.S. Territories, United States, Virgin Islands, WBD, Watershed Boundary Dataset, basin, boundaries, boundaries, hydrologic unit, hydrologic unit code, hydrology, inlandWaters, region, sub-basin, sub-region, subwatershed, watershed, watershed boundaries, Fewer tags

Watershed Boundary Dataset (WBD) - USGS National Map Downloadable Data Collection

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 for the...

Tags: Administrative watershed units, Boundary, Drainage area, Drainage areas for surface water, HU, All tags... HU10, HU12, HU14, HU16, HU2, HU4, HU6, HU8, HUC, Hydrography, Hydrologic Region, Hydrologic Subregion, Hydrologic Unit, Hydrologic Unit Code, NGDA, NGDAID163, National Geospatial Data Asset, Topographic, US, USGS:0101bc32-916e-481d-8654-db7f8509fd0c, United States, WBD, Water Inland Theme, Watershed, Watershed Boundaries, Watershed Boundary Dataset, drainage systems and characteristics, inlandWaters, Fewer tags

USGS Hydrography (NHD) Overlay Map Service from The National Map

The USGS National Hydrography Dataset (NHD) service from The National Map (TNM) is a comprehensive set of digital spatial data that encodes information about naturally occurring and constructed bodies of surface water (lakes, ponds, and reservoirs), paths through which water flows (canals, ditches, streams, and rivers), and related entities such as point features (springs, wells, stream gages, and dams). The information encoded about these features includes classification and other characteristics, delineation, geographic name, position and related measures, a "reach code" through which other information can be related to the NHD, and the direction of water flow. The network of reach codes delineating water and...

Categories: Data; Types: ArcGIS REST Map Service, Map Service; Tags: HU, Hydrography, NGP-TNM, NHD, Overlay Map Service, All tags... REST, US, United States, WBD, WMS, Water – Inland, a-16, basin, canal, dam, ditch, drainage, gage, gaging station, hydrography, hydrologic unit, inlandWaters, lake, marsh, ngda, pond, region, reservoir, river, spring, stream, subbasin, subregion, subwatershed, swamp, water, water - inland, watershed, well, Fewer tags

BLM REA YKL 2011 Current, Near-Term Future, Long-Term Landscape Condition in 5th Level Hydrologic Units in the YKL Study Area

The impacts of current and near-term and long-term future future anthropogenic development are summarized by 5th level (10 digit) hydrologic unit by the landscape condition model. These data are provided by Bureau of Land Management (BLM) "as is" and may contain errors or omissions. The User assumes the entire risk associated with its use of these data and bears all responsibility in determining whether these data are fit for the User's intended use. These data may not have the accuracy, resolution, completeness, timeliness, or other characteristics appropriate for applications that potential users of the data may contemplate. The User is encouraged to carefully consider the content of the metadata file associated...

Types: Live Data; Tags: 5th level (10 digit), BLM, Bureau of Land Management, DOI, Disturbance, All tags... Geospatial, MapServer, REA, Rapid Ecoregional Assessment, YKL 2011, Yukon Kuskokwim, anthropogenic, current, development, economy, future, hydrologic unit, impacts, landscape condition model., liveData, long-term, near-term, service, Fewer tags