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Topic
- Rivers--Oregon 54
- Dams 20
- Salmon 9
- Fishways 7
- Forests and forestry 4
- Power-plants 3
- Sand bars 3
- Sawmills 3
- Hydroelectric power plants 2
- Lampreys 2
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Region
- Clackamas County >> Oregon >> United States 55
- Willamette River >> Multnomah County >> Oregon >> United States 42
- Clackamas River >> Clackamas County >> Oregon >> United States 30
- Molalla River >> Clackamas County >> Oregon >> United States 9
- River Mill Dam >> Clackamas County >> Oregon >> United States 7
- Sandy River >> Multnomah County >> Oregon >> United States 7
- Little Sandy River >> Clackamas County >> Oregon >> United States 5
- Cazadero Dam >> Clackamas County >> Oregon >> United States 4
- Delph Creek >> Clackamas County >> Oregon >> United States 4
- Marmot Dam (historical) >> Clackamas County >> Oregon >> United States 4
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Format
- image/tiff 41
- image/jpeg 14
Collection
- Pacific Northwest Stream Survey 55
