Dataset Identification:
Resource Abstract:
- description: USGS The National Map - National Hydrography Dataset (NHD) 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 transported material flow allows
users to trace movement in upstream and downstream directions. In addition to this geographic information, the dataset contains
metadata that supports the exchange of future updates and improvements to the data. The NHD is available nationwide in two
seamless datasets, one based on 1:24,000-scale maps and referred to as high resolution NHD, and the other based on 1:100,000-scale
maps and referred to as medium resolution NHD. Additional selected areas in the United States are available based on larger
scales, such as 1:5,000-scale or greater, and referred to as local resolution NHD. The NHD supports many applications, such
as making maps, geocoding observations, flow modeling, data maintenance and stewardship. For additional information on NHD,
go to http://nhd.usgs.gov/. The Watershed Boundary Dataset (WBD) is a companion dataset to the NHD. It 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 information on WBD, go to http://nhd.usgs.gov/wbd.html.; abstract: USGS The National Map - National Hydrography
Dataset (NHD) 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 transported material flow allows users to trace movement in upstream and downstream directions.
In addition to this geographic information, the dataset contains metadata that supports the exchange of future updates and
improvements to the data. The NHD is available nationwide in two seamless datasets, one based on 1:24,000-scale maps and referred
to as high resolution NHD, and the other based on 1:100,000-scale maps and referred to as medium resolution NHD. Additional
selected areas in the United States are available based on larger scales, such as 1:5,000-scale or greater, and referred to
as local resolution NHD. The NHD supports many applications, such as making maps, geocoding observations, flow modeling, data
maintenance and stewardship. For additional information on NHD, go to http://nhd.usgs.gov/. The Watershed Boundary Dataset
(WBD) is a companion dataset to the NHD. It 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 information on WBD, go to http://nhd.usgs.gov/wbd.html.
Citation
- Title USGS National Hydrography Dataset from The National Map.
-
- creation Date
2018-06-08T22:49:24.563553
Resource language:
Processing environment:
Back to top:
Metadata data stamp:
2018-08-06T19:37:53Z
Resource Maintenance Information
- maintenance or update frequency:
- notes: This metadata record was generated by an xslt transformation from a dc metadata record; Transform by Stephen M. Richard, based
on a transform by Damian Ulbricht. Run on 2018-08-06T19:37:53Z
Metadata contact
-
pointOfContact
- organisation Name
CINERGI Metadata catalog
-
- Contact information
-
-
- Address
-
- electronic Mail Address cinergi@sdsc.edu
Metadata language
eng
Metadata character set encoding:
utf8
Metadata standard for this record:
ISO 19139 Geographic Information - Metadata - Implementation Specification
standard version:
2007
Metadata record identifier:
urn:dciso:metadataabout:9bebc01e-0eae-4a5f-b8d1-daafbc5f76a0
Metadata record format is ISO19139 XML (MD_Metadata)