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USGS HUC Region Map

By Water Resources Mission Area
USGS HUC Region Map
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USGS HUC Region Map

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Public Domain.

Related

Hydrologic Units of the United States Hydrologic Units of the United States

The U.S. Geological Survey uses a depiction and classification scheme for hydrologic units known as hydrologic unit codes (HUCs). HUCs generally represent catchments, and river basins are represented by a unique series of numbers with successively smaller hydrologic units nested inside of larger ones.
By
Water Resources Mission Area, Upper Midwest Water Science Center

Related

Hydrologic Units of the United States Hydrologic Units of the United States

The U.S. Geological Survey uses a depiction and classification scheme for hydrologic units known as hydrologic unit codes (HUCs). HUCs generally represent catchments, and river basins are represented by a unique series of numbers with successively smaller hydrologic units nested inside of larger ones.
By
Water Resources Mission Area, Upper Midwest Water Science Center
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