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Topic
- Rivers--Oregon 54
- Dams 19
- Fish hatcheries 4
- Fishways 3
- Waterfalls 3
- Bridges 2
- Canyons 2
- Rivers--Washington (State) 2
- Steam-engines 2
- Boats 1
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Region
- Grande Ronde River >> Asotin County >> Washington >> United States 19
- Clackamas County >> Oregon >> United States 14
- Willamette River >> Multnomah County >> Oregon >> United States 14
- Clackamas River >> Clackamas County >> Oregon >> United States 13
- Columbia River >> Clatsop County >> Oregon >> United States 10
- Wallowa County >> Oregon >> United States 10
- Union County >> Oregon >> United States 8
- Baker County >> Oregon >> United States 7
- Clatsop County >> Oregon >> United States 6
- Burnt River >> Baker County >> Oregon >> United States 3
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Format
- image/jpeg 54
Institution
- Oregon State University 54