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#1 Federal
1:2,000,000-scale Hydrologic Units of the United States (OLDER)
- Organization: Department of the Interior
- Dataset Last Updated: November 17, 2020 at 12:00 AM
This data set has been superseded by huc2m. This file contains hydrologic unit boundaries and codes for the conterminous United States along with Alaska, Hawaii, Puerto Rico and the U.S. Virgin...
- xml
- xml
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: August 01, 2026 at 05:29 AM
#2 Federal
1:2,000,000-scale Hydrologic Units of the United States (SUPERSEDED)
- Organization: Department of the Interior
- Dataset Last Updated: November 17, 2020 at 12:00 AM
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...
- xml
- xml
Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: August 01, 2026 at 05:09 AM

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