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- Northwest, Pacific 39
- Riparian areas 39
- Rivers 35
- Photography 34
- Bodies of water 31
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Region
- Oregon >> United States 24
- Columbia River >> Clatsop County >> Oregon >> United States 23
- Washington >> United States 15
- Columbia River >> Douglas County >> Washington >> United States 12
- Pillars of Hercules >> Multnomah County >> Oregon >> United States 3
- Cape Horn >> Skamania County >> Washington >> United States 2
- Castle Rock >> Malheur County >> Oregon >> United States 2
- Horsetail Falls >> Multnomah County >> Oregon >> United States 2
- Big Eddy (historical) >> Wasco County >> Oregon >> United States 1
- Eagle Creek >> Clackamas County >> Oregon >> United States 1
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- University of Oregon 39