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Region
- Columbia River >> Clatsop County >> Oregon >> United States 18
- Portland >> Clackamas County >> Oregon >> United States 8
- Willamette River >> Multnomah County >> Oregon >> United States 8
- Oregon >> United States 6
- Yamhill River >> Yamhill County >> Oregon >> United States 5
- Columbia River >> Douglas County >> Washington >> United States 4
- The Dalles >> Wasco County >> Oregon >> United States 4
- Astoria >> Clatsop County >> Oregon >> United States 3
- Cascade Locks >> Hood River County >> Oregon >> United States 3
- Oregon City >> Clackamas County >> Oregon >> United States 3
- Rock Island Rapids >> Chelan County >> Washington >> United States 3
- Vancouver >> Clark County >> Washington >> United States 3
- Bonneville Dam >> Multnomah County >> Oregon >> United States 2
- Celilo Canal >> Wasco County >> Oregon >> United States 2
- Celilo Falls (historical) >> Wasco County >> Oregon >> United States 2
- Clackamas Rapids >> Clackamas County >> Oregon >> United States 2
- Corvallis >> Benton County >> Oregon >> United States 2
- Cowlitz River >> Cowlitz County >> Washington >> United States 2
- Lewiston >> Nez Perce County >> Idaho >> United States 2
- Pacific Ocean >> Earth 2
