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Water Basin
- Rio Grande (North America) 6
- Rio Grande >> Mexico >> North America 6
- Saint Lawrence River >> Franklin County >> New York >> United States 6
- St. Lawrence 6
- Colorado River 5
- Colorado 5
- Nelson River >> Manitoba >> Canada 4
- Nelson-Saskatchewan 4
- Saskatchewan River >> Manitoba >> Canada 4
- Columbia River >> Clatsop County >> Oregon >> United States 2
- Columbia 2
- Mississippi River Delta >> Plaquemines Parish >> Louisiana >> United States 2
- Mississippi 2
- Saint John River >> New Brunswick >> Canada 2
- Skagit River >> Skagit County >> Washington >> United States 2
- Skagit 2
- St. John (North America) 2
- Tijuana River 2
- Tijuana 2
- Alsek River >> Yakutat >> Alaska >> United States 1