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- Columbia River >> Clatsop County >> Oregon >> United States 13
- Oregon >> United States 6
- Willamette River >> Multnomah County >> Oregon >> United States 3
- Horsetail Falls >> Multnomah County >> Oregon >> United States 2
- Memaloose Island (historical) >> Wasco County >> Oregon >> United States 2
- Multnomah Falls >> Multnomah County >> Oregon >> United States 2
- Oneonta Gorge >> Multnomah County >> Oregon >> United States 2
- Chehalis River >> Grays Harbor County >> Washington >> United States 1
- Cowlitz River >> Cowlitz County >> Washington >> United States 1
- Eagle Creek >> Clackamas County >> Oregon >> United States 1
- Nooksack River >> Whatcom County >> Washington >> United States 1
- Pillars of Hercules >> Multnomah County >> Oregon >> United States 1
- Portland >> Clackamas County >> Oregon >> United States 1
- Skagit River >> Skagit County >> Washington >> United States 1
- Snake River >> Franklin County >> Washington >> United States 1