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Water Basin
- Rio Grande (North America) 11
- Rio Grande >> Mexico >> North America 11
- Colorado River 10
- Colorado 10
- Danube River >> Romania 5
- Danube 5
- Jordan River >> Israel 5
- Jordan 5
- Elbe River 3
- Elbe 3
- Euphrates River >> Basra Governorate >> Iraq 3
- Great Scarcies 3
- Great Scarcies 3
- La Plata 3
- Neman 3
- Nemunas 3
- Oder River 3
- Oder/Odra 3
- Río de la Plata 3
- Shatt al Arab 3
