Pacific Northwest water resource region
The Pacific Northwest water resource region is one of 21 major geographic areas, or
The Pacific Northwest region, which is listed with a 2-digit hydrologic unit code (HUC) of 17, has an approximate size of 302,334 square miles (783,040 square kilometers), and consists of 12 subregions, which are listed with the 4-digit HUCs 1701 through 1706.[3]
This region includes the drainage within the United States that ultimately discharges into: (a) the Strait of Georgia and of Strait of Juan de Fuca, and (b) the Pacific Ocean within the states of Oregon and Washington; and that part of the Great Basin whose discharge is into the state of Oregon. Includes all of Washington and parts of California, Idaho, Montana, Nevada, Oregon, Utah, and Wyoming.[3]
![](http://upload.wikimedia.org/wikipedia/commons/d/d2/HUC17.jpg)
List of water resource subregions
Subregion HUC[4] | Subregion Name[4] | Subregion Description[3] | Subregion Location[4] | Subregion Size[4] | Subregion Map |
---|---|---|---|---|---|
1701 | Kootenai–Pend Oreille–Spokane subregion | The Kootenai, Pend Oreille, and Spokane River Basins within the United States. | Idaho, Montana, and Washington. | 36,600 sq mi (95,000 km2) | ![]() |
1702 | Upper Columbia subregion | The Columbia River Basin within the United States above the confluence with the Snake River Basin, excluding the Yakima River Basin. | Washington | 22,600 sq mi (59,000 km2) | ![]() |
1703 | Yakima subregion | The Yakima River Basin. | Washington | 6,210 sq mi (16,100 km2) | ![]() |
1704 | Upper Snake subregion | The Snake River Basin to and including the Clover Creek Basin. | Idaho, Nevada, Utah, and Wyoming. | 35,600 sq mi (92,000 km2) | ![]() |
1705 | Middle Snake subregion | The Snake River Basin below the Clover Creek Basin to Hells Canyon Dam. | Idaho, Nevada, and Oregon. | 36,700 sq mi (95,000 km2) | ![]() |
1706 | Lower Snake subregion | The Snake River Basin below Hells Canyon Dam to its confluence with the Columbia River. | Idaho, Oregon, and Washington. | 35,200 sq mi (91,000 km2) | ![]() |
1707 | Middle Columbia subregion | The Columbia River Basin below the confluence with the Snake River Basin to Bonneville Dam. | Oregon and Washington. | 29,800 sq mi (77,000 km2) | ![]() |
1708 | Lower Columbia subregion | The Columbia River Basin below Bonneville Dam, excluding the Willamette River Basin. | Oregon and Washington. | 6,250 sq mi (16,200 km2) | ![]() |
1709 | Willamette subregion | The Willamette River Basin. | Oregon | 11,400 sq mi (30,000 km2) | ![]() |
1710 | Oregon–Washington Coastal subregion | The drainage into the drainage boundary to the Smith River Basin boundary, excluding the Columbia River Basin. | California, Oregon, and Washington. | 23,200 sq mi (60,000 km2) | ![]() |
1711 | Puget Sound subregion | The drainage within the United States that discharges into: (a) Puget Sound and the Straits of Georgia and of Juan De Fuca; and (b) the Fraser River Basin. | Washington | 16,800 sq mi (44,000 km2) | ![]() |
1712 | Oregon closed basins subregion | The drainage of the Great Basin that discharges into the state of Oregon. | California, Nevada, and Oregon. | 17,300 sq mi (45,000 km2) | ![]() |
See also
- List of rivers in the United States
- Water resource region
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
- ^ 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