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Topic
- Rivers--Oregon 6
- Salmon 6
- Dams 3
- Hydroelectric power plants 1
- Power-plants 1
Region
- Clackamas County >> Oregon >> United States 6
- Clackamas River >> Clackamas County >> Oregon >> United States 6
- Willamette River >> Multnomah County >> Oregon >> United States 6
- River Mill Dam >> Clackamas County >> Oregon >> United States 3
- Cazadero Dam >> Clackamas County >> Oregon >> United States 2
Collection
- Pacific Northwest Stream Survey 6