Upper Colorado water resource region
The Upper Colorado water resource region is one of 21 major geographic areas, or
hydrologic units. These geographic areas contain either the drainage area of a major river, or the combined drainage areas of a series of rivers.[1][2]
The Upper Colorado region, which is listed with a 2-digit hydrologic unit code (HUC) of 14, has an approximate size of 113,347 square miles (293,570 square kilometers), and consists of 8 subregions, which are listed with the 4-digit HUCs 1401 through 1408.[3]
This region includes the drainage of: (a) the
Lee Ferry compact point which is one mile below the mouth of the Paria River; and (b) the Great Divide closed basin. Includes parts of Arizona, Colorado, New Mexico, Utah, and Wyoming.[4]
List of water resource subregions
Subregion HUC[5] | Subregion Name[5] | Subregion Description[4] | Subregion Location[5] | Subregion Size[5] | Subregion Map |
---|---|---|---|---|---|
1401 | Colorado headwaters subregion | The Colorado River Basin to but excluding the Bitter Creek Basin, and excluding the Gunnison River Basin. | Colorado and Utah. | 9,730 sq mi (25,200 km2) | |
1402 | Gunnison subregion | The Gunnison River Basin. | Colorado | 7,930 sq mi (20,500 km2) | |
1403 | Upper Colorado–Dolores subregion | The Colorado River Basin from and including the Bitter Creek Basin to the confluence with the Green River Basin. | Colorado and Utah. | 8,250 sq mi (21,400 km2) | |
1404 | Great Divide – Upper Green subregion | The Green River Basin above the confluence with the Yampa River Basin; and the Great Divide closed basin. | Utah and Wyoming. | 20,600 sq mi (53,000 km2) | |
1405 | White–Yampa subregion | The White and Yampa River Basins. | Colorado, Utah, and Wyoming. | 13,100 sq mi (34,000 km2) | |
1406 | Lower Green subregion | The Green River Basin below the confluence with the Yampa River Basin, but excluding the Yampa and White River Basins. | Colorado and Utah. | 14,400 sq mi (37,000 km2) | |
1407 | Upper Colorado–Dirty Devil subregion | The Colorado River Basin below the confluence with the Green River Basin to the Lee Ferry compact point, but excluding the San Juan River Basin. | Arizona and Utah. | 13,500 sq mi (35,000 km2) | |
1408 | San Juan subregion | The San Juan River Basin. | Arizona, Colorado, New Mexico, and Utah. | 24,600 sq mi (64,000 km2) |
See also
- List of rivers in the United States
References
- USGS. Retrieved 2016-10-12. This article incorporates text from this source, which is in the public domain.
- USGS. Retrieved 2016-10-12. This article incorporates text from this source, which is in the public domain.
- ^ "Boundary Descriptions and Names of Regions, Subregions, Accounting Units and Cataloging Units". water.usgs.gov. Retrieved 2018-09-15.
- ^ USGS. Retrieved 2016-10-12. This article incorporates text from this source, which is in the public domain.
- ^ USGS-Oak Ridge National Laboratory. Retrieved 2016-10-12. This article incorporates text from this source, which is in the public domain.