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