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Region
- Portland >> Clackamas County >> Oregon >> United States 23
- Columbia River >> Clatsop County >> Oregon >> United States 22
- Willamette River >> Multnomah County >> Oregon >> United States 13
- Oregon City >> Clackamas County >> Oregon >> United States 6
- Yamhill River >> Yamhill County >> Oregon >> United States 6
- Clatskanie River >> Columbia County >> Oregon >> United States 4
- Cowlitz River >> Cowlitz County >> Washington >> United States 4
- Oregon >> United States 4
- Washington >> United States 4
- Clackamas Rapids >> Clackamas County >> Oregon >> United States 3
- Corvallis >> Benton County >> Oregon >> United States 3
- Pacific Ocean >> Earth 3
- Snake River >> British Columbia >> Canada 3
- Vancouver >> Clark County >> Washington >> United States 3
- British Columbia >> Canada 2
- Celilo Canal >> Wasco County >> Oregon >> United States 2
- Celilo Falls (historical) >> Wasco County >> Oregon >> United States 2
- Lewiston >> Nez Perce County >> Idaho >> United States 2
- Riparia >> Whitman County >> Washington >> United States 2
- The Dalles >> Wasco County >> Oregon >> United States 2
