---
access_dt: ~
aliases:
  - context: dataset
    lexicon: datagov
    term: attributes-for-nhdplus-catchments-version-1-1-basin-characteristics-2002
    url: ~
  - context: identifier
    lexicon: datagov
    term: f34775b1-59b9-4051-b137-7efa1a367360
    url: ~
attributes: ~
cite_metadata: ~
cited_by: []
contributors:
  - display_name: 'Data Archive : USGS Maryland-Delaware-D.C. Water Science Center '
    href: http://52.38.26.42:8080/contributor/23016.yaml
    id: 23016
    organization:
      country_code: US
      display_name: USGS Maryland-Delaware-D.C. Water Science Center
      identifier: usgs-maryland-delaware-dc-water-science-center
      name: USGS Maryland-Delaware-D.C. Water Science Center
      organization_type_identifier: federal
      type: organization
      url: http://md.water.usgs.gov/
    organization_uri: /organization/usgs-maryland-delaware-dc-water-science-center
    person: {}
    person_id: ~
    person_uri: ~
    role_type_identifier: data_archive
    uri: /contributor/23016
data_qualifier: ~
description: "This data set represents basin characteristics, compiled for every catchment in NHDPlus for the conterminous United States. These characteristics are basin shape index, stream density, sinuosity, mean elevation, mean slope, and number of road-stream crossings. The source data sets are the U.S. Environmental Protection Agency's NHDPlus and the U.S. Census Bureau's TIGER/Line Files. The NHDPlus Version 1.1 is an integrated suite of application-ready geospatial datasets that incorporates many of the best features of the National Hydrography Dataset (NHD) and the National Elevation Dataset (NED). The NHDPlus includes a stream network (based on the 1:100,00-scale NHD), improved networking, naming, and value-added attributes (VAAs). NHDPlus also includes elevation-derived catchments (drainage areas) produced using a drainage enforcement technique first widely used in New England, and thus referred to as \"the New England Method.\" This technique involves \"burning in\" the 1:100,000-scale NHD and when available building \"walls\" using the National Watershed Boundary Dataset (WBD). The resulting modified digital elevation model (HydroDEM) is used to produce hydrologic derivatives that agree with the NHD and WBD. Over the past two years, an interdisciplinary team from the U.S. Geological Survey (USGS), and the U.S. Environmental Protection Agency (USEPA), and contractors, found that this method produces the best quality NHD catchments using an automated process (USEPA, 2007). The NHDPlus dataset is organized by 18 Production Units that cover the conterminous United States. The NHDPlus version 1.1 data are grouped by the U.S. Geologic Survey's Major River Basins (MRBs, Crawford and others, 2006). MRB1, covering the New England and Mid-Atlantic River basins, contains NHDPlus Production Units 1 and 2. MRB2, covering the South Atlantic-Gulf and Tennessee River basins, contains NHDPlus Production Units 3 and 6. MRB3, covering the Great Lakes, Ohio, Upper Mississippi, and Souris-Red-Rainy River basins, contains NHDPlus Production Units 4, 5, 7 and 9. MRB4, covering the Missouri River basins, contains NHDPlus Production Units 10-lower and 10-upper. MRB5, covering the Lower Mississippi, Arkansas-White-Red, and Texas-Gulf River basins, contains NHDPlus Production Units 8, 11 and 12. MRB6, covering the Rio Grande, Colorado and Great Basin River basins, contains NHDPlus Production Units 13, 14, 15 and 16. MRB7, covering the Pacific Northwest River basins, contains NHDPlus Production Unit 17. MRB8, covering California River basins, contains NHDPlus Production Unit 18."
description_attribution: ~
display_name: 'Attributes for NHDPlus Catchments (Version 1.1): Basin Characteristics, 2002'
doi: ~
end_time: ~
files: []
href: http://52.38.26.42:8080/dataset/usgs-attributes-for-nhdplus-catchments-version-1-1-basin-characteristics-2002.yaml
identifier: usgs-attributes-for-nhdplus-catchments-version-1-1-basin-characteristics-2002
instrument_measurements: []
lat_max: 51.657387
lat_min: 23.243486
lon_max: -65.327751
lon_min: -127.910792
name: 'Attributes for NHDPlus Catchments (Version 1.1): Basin Characteristics, 2002'
native_id: ~
parents: []
processing_level: ~
publication_year: ~
references: []
release_dt: ~
scale: ~
scope: ~
spatial_extent: ~
spatial_ref_sys: ~
spatial_res: ~
start_time: ~
temporal_extent: ~
temporal_resolution: ~
type: dataset
uri: /dataset/usgs-attributes-for-nhdplus-catchments-version-1-1-basin-characteristics-2002
url: http://water.usgs.gov/GIS/dsdl/nhd_bchar_mrb1.zip
variables: ~
version: ~
vertical_extent: ~