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Region
- Columbia River >> Douglas County >> Washington >> United States 13
- Oregon >> United States 13
- Washington >> United States 13
- Willamette River >> Multnomah County >> Oregon >> United States 13
- Snake River >> Franklin County >> Washington >> United States 8
- California >> United States 7
- San Francisco Bay >> San Mateo County >> California >> United States 3
- Umpqua River >> Douglas County >> Oregon >> United States 3
- Sacramento River >> Contra Costa County >> California >> United States 2
- San Diego River >> San Diego County >> California >> United States 2
- San Joaquin River >> Contra Costa County >> California >> United States 2
- Clearwater River >> Nez Perce County >> Idaho >> United States 1
- Coos Bay >> Coos County >> Oregon >> United States 1
- Feather River >> Sutter >> California >> United States 1
- Idaho >> United States 1
