Geographic subbasins in the Columbia River Basin and their adoption dates. See Subbasin Plans page.
| Subbasin Name | Year Plan Adopted |
| Asotin | 2004 |
| Big White Salmon | 2004 |
| Bitterroot | 2010 |
| Blackfoot | 2011 |
| Boise | 2005 |
| Bruneau | 2004 |
| Burnt | 2005 |
| Clark Fork | |
| Clearwater | 2005 |
| Coeur d’Alene, including Coeur d’Alene Lake | 2004 |
| Columbia Estuary (Columbia River and tributaries from the ocean upstream to the Cowlitz River) | 2005 |
| Columbia Gorge (Columbia River and tributaries between, and including Bonneville and The Dalles dams) | 2004 |
| Columbia Lower (Columbia River and tributaries upstream of the Cowlitz to Bonneville Dam) | 2005 |
| Columbia Lower Middle (Columbia River and tributaries upstream of The Dalles including Wanapum Dam) | 2005 |
| Columbia Upper (Columbia River and tributaries from Chief Joseph Dam to the international border) | 2004 |
| Columbia Upper Middle (Columbia River and tributaries upstream of Wanapum Dam to Chief Joseph Dam) | 2004 |
| Cowlitz | 2005 |
| Crab | |
| Deschutes | 2005 |
| Elochoman | 2005 |
| Entiat | 2005 |
| Fifteenmile | 2004 |
| Flathead | 2004 |
| Grande Ronde | 2005 |
| Grays | 2005 |
| Headwaters of the Snake (Snake River and tributaries from the Heise gauging station upstream) | 2005 |
| Hood | 2004 |
| Imnaha | 2005 |
| John Day | 2005 |
| Kalama | 2005 |
| Klickitat | 2005 |
| Kootenai | 2004 |
| Lake Chelan | 2004 |
| Lewis | 2005 |
| Little White Salmon | 2005 |
| Malheur | 2004 |
| Methow | 2005 |
| Okanogan | 2005 |
| Owyhee | 2004 |
| Palouse | |
| Payette | 2005 |
| Pend Oreille | 2004 |
| Powder | 2005 |
| Salmon | 2004 |
| San Poil | 2004 |
| Sandy | |
| Snake Hells Canyon (Snake River and tributaries above the Clearwater River including Hells Canyon Dam) | 2005 |
| Snake Lower (Snake River and tributaries between the Columbia River and the Clearwater River) | 2004 |
| Snake Lower Middle (Snake River and tributaries upstream of Hells Canyon Dam to the Boise River) | 2005 |
| Snake Upper Middle (Snake River and tributaries from the Boise River upstream to Clover Creek) | 2005 |
| Spokane | 2004 |
| Tucannon | 2004 |
| Umatilla | 2004 |
| Upper Closed Basin (Snake River) | 2005 |
| Upper Snake (Snake River and tributaries from Clover Creek upstream to the Henry’s Fork headwaters) | 2005 |
| Walla Walla | 2005 |
| Washougal | 2005 |
| Weiser | 2005 |
| Wenatchee | 2005 |
| Willamette | 2004 |
| Wind | 2005 |
| Yakima | 2005 |
