1:2,000,000-scale Hydrologic Units of the United States (SUPERSEDED)

This file contains hydrologic unit boundaries and codes for the conterminous United States along with Alaska, Hawaii, Puerto Rico and the U.S. Virgin Islands. It was revised for inclusion in the National Atlas of the United States of America, and updated to match the streams file created by the USGS National Mapping Division (NMD) for the National Atlas of the United States of America.

For the most current data and information relating to hydrologic unit codes (HUCs) please see http://water.usgs.gov/GIS/huc.html. The Watershed Boundary Dataset (WBD) is the most current data available for watershed delineation. See http://www.nrcs.usda.gov/wps/portal/nrcs/main/national/water/watersheds/dataset

Data and Resources

Field Value
accessLevel public
bureauCode {010:12}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier USGS:28f2bd10-538a-4e0d-a1b6-1930a1037982
metadata_type geospatial
modified 20201117
old-spatial 170.87, 17.68, -66.88, 71.77
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash 01e6a10ccc4e069f252752f95878e59a8102af8b
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[170.87, 17.68], [170.87, 71.77], [ -66.88, 71.77], [ -66.88, 17.68], [170.87, 17.68]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • alaska
  • amerigeo
  • amerigeoss
  • cataloging-units
  • ckan
  • drainage-basins
  • environment
  • geo
  • geoscientificinformation
  • geoss
  • hawaii
  • hydrologic-unit-boundaries
  • hydrologic-unit-codes
  • hydrologic-units
  • inlandwaters
  • national
  • north-america
  • puerto-rico
  • united-states
  • usgs-28f2bd10-538a-4e0d-a1b6-1930a1037982
  • virgin-islands
  • watersheds
isopen False
license_id notspecified
license_title License not specified
maintainer John Watermolen
maintainer_email jmwater@usgs.gov
metadata_created 2025-11-22T23:59:11.600706
metadata_modified 2025-11-22T23:59:11.600711
notes This file contains hydrologic unit boundaries and codes for the conterminous United States along with Alaska, Hawaii, Puerto Rico and the U.S. Virgin Islands. It was revised for inclusion in the National Atlas of the United States of America, and updated to match the streams file created by the USGS National Mapping Division (NMD) for the National Atlas of the United States of America. For the most current data and information relating to hydrologic unit codes (HUCs) please see http://water.usgs.gov/GIS/huc.html. The Watershed Boundary Dataset (WBD) is the most current data available for watershed delineation. See http://www.nrcs.usda.gov/wps/portal/nrcs/main/national/water/watersheds/dataset
num_resources 2
num_tags 22
title 1:2,000,000-scale Hydrologic Units of the United States (SUPERSEDED)