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Region
- Columbia River >> Clatsop County >> Oregon >> United States 91
- Oregon >> United States 54
- Willamette River >> Multnomah County >> Oregon >> United States 6
- Oneonta Gorge >> Multnomah County >> Oregon >> United States 5
- Pillars of Hercules >> Multnomah County >> Oregon >> United States 5
- Horsetail Falls >> Multnomah County >> Oregon >> United States 4
- Memaloose Island (historical) >> Wasco County >> Oregon >> United States 4
- Multnomah Falls >> Multnomah County >> Oregon >> United States 3
- Eagle Creek >> Clackamas County >> Oregon >> United States 2
- Big Eddy (historical) >> Wasco County >> Oregon >> United States 1
- Cape Horn >> Skamania County >> Washington >> United States 1
- Castle Rock >> Malheur County >> Oregon >> United States 1
- Celilo Falls (historical) >> Wasco County >> Oregon >> United States 1
- Chehalis River >> Grays Harbor County >> Washington >> United States 1
- Cowlitz River >> Cowlitz County >> Washington >> United States 1
- Crown Point >> Multnomah County >> Oregon >> United States 1
- Hood River >> Hood River County >> Oregon >> United States 1
- Nooksack River >> Whatcom County >> Washington >> United States 1
- Portland >> Clackamas County >> Oregon >> United States 1
- Rooster Rock >> Multnomah County >> Oregon >> United States 1