---
access_dt: ~
aliases:
  - context: identifier
    lexicon: datagov
    term: b086804a-349b-43e8-9072-6e1ec7743211
    url: ~
  - context: dataset
    lexicon: datagov
    term: enviroatlas-hu12-polygon
    url: ~
attributes: ~
cite_metadata: ~
cited_by: []
contributors:
  - display_name: 'Data Archive : U.S. Environmental Protection Agency '
    href: http://52.38.26.42:8080/contributor/18187.yaml
    id: 18187
    organization:
      country_code: US
      display_name: U.S. Environmental Protection Agency
      identifier: us-environmental-protection-agency
      name: U.S. Environmental Protection Agency
      organization_type_identifier: federal
      type: organization
      url: http://www.epa.gov/
    organization_uri: /organization/us-environmental-protection-agency
    person: {}
    person_id: ~
    person_uri: ~
    role_type_identifier: data_archive
    uri: /contributor/18187
data_qualifier: ~
description: 'This data set is a complete digital hydrologic unit boundary layer to the Subwatershed (12-digit) 6th level for the entire United States. This data set consists of geo-referenced digital data and associated attributes created in accordance with the "Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3" (04/01/2009). http://www.ncgc.nrcs.usda.gov/products/datasets/watershed/index.html . Polygons are attributed with hydrologic unit codes for 4th level sub-basins, 5th level watersheds, 6th level subwatersheds, name, size, downstream hydrologic unit, type of watershed, non-contributing areas and flow modification.'
description_attribution: ~
display_name: 'EnviroAtlas - HU12_polygon'
doi: ~
end_time: ~
files: []
href: http://52.38.26.42:8080/dataset/usda-enviroatlas-hu12-polygon.yaml
identifier: usda-enviroatlas-hu12-polygon
instrument_measurements: []
lat_max: 61.7110157
lat_min: 6.65223303
lon_max: -12.68151645
lon_min: -138.21454852
name: 'EnviroAtlas - HU12_polygon'
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/usda-enviroatlas-hu12-polygon
url: http://datagateway.nrcs.usda.gov
variables: ~
version: ~
vertical_extent: ~