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- Dams 5
- Fishways 5
- Rivers--Oregon 5
- Hydroelectric power plants 3
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Region
- South Yamhill River >> Yamhill County >> Oregon >> United States 5
- Willamette River >> Multnomah County >> Oregon >> United States 5
- Willamina Creek >> Yamhill County >> Oregon >> United States 5
- Yamhill County >> Oregon >> United States 5
- Yamhill River >> Yamhill County >> Oregon >> United States 5
- Willamina >> Yamhill County >> Oregon >> United States 2
Decade
- 1940-1949 5
