Subject
- River sediments -- Oregon -- Calapooia River2
- Bars (Geomorphology) -- Oregon -- Calapooia River1
- Bars (Geomorphology) -- Oregon -- Sandy River1
- Cascadia Subduction Zone1
- Catostomidae -- Larvae -- Ecology -- Oregon -- Sprague River1
- Catostomidae -- Larvae -- Ecology -- Oregon -- Upper Klamath Lake1
- Catostomidae -- Larvae -- Ecology -- Oregon -- Williamson River1
- Climatic changes -- Oregon -- Hood, Mount1
- Coho salmon -- Effect of temperature on -- Oregon -- Umpqua River1
- Coho salmon -- Effect of temperature on -- Smith River (Douglas County, Or.)1
- Coho salmon -- Migration -- Oregon -- Umpqua River1
- Coho salmon -- Spawning -- Smith River (Douglas County, Or.)1
- Dam retirement -- Oregon -- Brownsville1
- Dam retirement -- Oregon -- Calapooia River1
- Dam retirement -- Oregon -- Sandy River1
- Dams -- Environmental aspects -- China1
- Dams -- Environmental aspects -- Oregon -- Calapooia River1
- Debris avalanches -- Washington (State) -- Rainier, Mount1
- Fishes -- Effect of sediments on -- Oregon -- Pistol River1
- Fishes -- Racial analysis -- Amazon River Valley1