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Water Basin
- Columbia River >> Clatsop County >> Oregon >> United States 13
- Columbia 13
- Fraser River >> British Columbia >> Canada 3
- Fraser 3
- Skagit River >> Skagit County >> Washington >> United States 3
- Skagit 3
- Mississippi River Delta >> Plaquemines Parish >> Louisiana >> United States 2
- Mississippi 2
- Nelson River >> Manitoba >> Canada 2
- Nelson-Saskatchewan 2
- Saint Croix River >> Washington County >> Maine >> United States 2
- Saint John River >> New Brunswick >> Canada 2
- Saint Lawrence River >> Franklin County >> New York >> United States 2
- Saskatchewan River >> Manitoba >> Canada 2
- St. Croix 2
- St. John (North America) 2
- St. Lawrence 2
- Alsek River >> Yakutat >> Alaska >> United States 1
- Alsek 1
- Caetani River >> Valdez-Cordova County >> Alaska >> United States 1