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Topic
- Rivers--Oregon 30
- Salmon 30
- Dams 21
- Fishes--Conservation 12
- Flood control 11
- Fish hatcheries 4
- Sand bars 3
- Sawmills 3
- Fishways 2
- Waterfalls 2
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Region
- Willamette River >> Multnomah County >> Oregon >> United States 30
- Columbia River >> Clatsop County >> Oregon >> United States 8
- Clackamas County >> Oregon >> United States 5
- Linn County >> Oregon >> United States 5
- Santiam River >> Marion County >> Oregon >> United States 5
- Marion County >> Oregon >> United States 4
- Abiqua Creek >> Marion County >> Oregon >> United States 3
- Molalla River >> Clackamas County >> Oregon >> United States 3
- Cazadero Dam >> Clackamas County >> Oregon >> United States 2
- Clackamas River >> Clackamas County >> Oregon >> United States 2
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Format
- image/tiff 16
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Decade
- 1940-1949 30