| Columbia River |
|
|
| Deschutes |
Beaver-South Fork
Little Deschutes
Lower Crooked
Lower Deschutes
Trout
Upper Crooked
Upper Deschutes |
 |
| Goose and Summer Lakes |
Goose Lake
Lake Albert
Summer Lake
Warner Lakes |
 |
| Grande
Ronde |
Imnaha
Lower Grande Ronde
Upper Grande Ronde
Wallowa |
 |
| John Day |
Lower John Day
Middle Fork John Day
North Fork John Day
Upper John Day |
|
| Klamath |
Lost
Sprague
Upper Klamath Lake
Upper Klamath
Williamson |
|
| Malheur Lake |
Alvord Lake
Donner und Blitzen
Guano, Nevada
Harney-Malheur Lake
Silver
Silvies
Thousand-Virgin |
|
| Malheur River |
Bully
Lower Malheur
Middle Snake-Payette
Upper Malheur
Willow-Malheur |
|
| Mid Coast |
Alsea
Siletz-Yaquina
Siltcoos
Siuslaw |
|
| Middle Columbia-Hood |
Miles Creeks
Western Hood |
|
| North Coast/Lower Columbia
River |
Lower Columbia-Clatskanie
Lower Columbia-Youngs
Necanicum
Nehalem
Wilson-Trask-Nestucca |
|
| Owyhee |
Crooked-Rattlesnake Subbasin
East Little Owyhee Subbasin/South Fork Owyhee
Jordan Subbasin
Lower Owyhee Subbasin
Middle Owyhee Subbasin
Middle Snake-Succor Subbasin
Upper Quinn Subbasin |
|
| Powder |
Brownlee Reservoir Subbasin
Burnt Subbasin
Middle Snake-Payette Subbasin
Powder Subbasin |
|
| Rogue |
Applegate Subbasin
Illinois Subbasin
Lower Rogue Subbasin
Middle Rogue Subbasin
Upper Rogue Subbasin |
 |
| Sandy |
|
|
| Snake
River/Hells Canyon |
|
|
| South Coast |
Chetco Subbasin
Coos Subbasin
Coquille Subbasin
Sixes Subbasin |
|
| Umatilla |
Umatilla Subbasin
Willow Creek Subbasin |
|
| Umpqua |
North Umpqua Subbasin
South Umpqua Subbasin
Umpqua Subbasin |
|
| Walla
Walla |
|
|
| Willamette |
Columbia Slough Watershed
Molalla-Pudding Subbasin
Tualatin Subbasin
Yamhill Subbasin |
|