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Topic
- Dams 11
- Rivers--Oregon 11
- Fishways 2
- Salmon 2
- Hydroelectric power plants 1
- Power-plants 1
Region
- Clackamas County >> Oregon >> United States 11
- Willamette River >> Multnomah County >> Oregon >> United States 7
- Clackamas River >> Clackamas County >> Oregon >> United States 3
- Molalla River >> Clackamas County >> Oregon >> United States 3
- Cazadero Dam >> Clackamas County >> Oregon >> United States 2
- Little Sandy River >> Clackamas County >> Oregon >> United States 2
- Marmot Dam (historical) >> Clackamas County >> Oregon >> United States 2
- Sandy River >> Multnomah County >> Oregon >> United States 2
- Mulino >> Clackamas County >> Oregon >> United States 1
- River Mill Dam >> Clackamas County >> Oregon >> United States 1
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Format
- image/tiff 11
Decade
- 1940-1949 11