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Region
- Portland >> Clackamas County >> Oregon >> United States 23
- Columbia River >> Clatsop County >> Oregon >> United States 12
- Willamette River >> Multnomah County >> Oregon >> United States 11
- Oregon City >> Clackamas County >> Oregon >> United States 6
- Yamhill River >> Yamhill County >> Oregon >> United States 6
- Clackamas Rapids >> Clackamas County >> Oregon >> United States 3
- Corvallis >> Benton County >> Oregon >> United States 3
- Clatskanie River >> Columbia County >> Oregon >> United States 2
- Cowlitz River >> Cowlitz County >> Washington >> United States 2
- Pacific Ocean >> Earth 2
- Vancouver >> Clark County >> Washington >> United States 2
- Celilo Canal >> Wasco County >> Oregon >> United States 1
- Eugene >> Lane County >> Oregon >> United States 1
- Lewiston >> Nez Perce County >> Idaho >> United States 1
- Long Tom River >> Benton County >> Oregon >> United States 1
- Oswego >> City of Oswego >> Oswego >> New York >> United States 1
- Puget Sound >> Kitsap County >> Washington >> United States 1
- Siuslaw River >> Lane County >> Oregon >> United States 1
- Snake River >> British Columbia >> Canada 1
- The Dalles (historical) >> Klickitat County >> Washington >> United States 1
