Water Basin
- Rio Grande >> Mexico >> North America 7
- Aral Sea 5
- Aral Sea 5
- Rhone 5
- Rhône 5
- Daugava 4
- Daugava 4
- Neman 4
- Nemunas 4
- Oder River 4
- Oder/Odra 4
- Unknown 4
- Dniester >> Ukraine 3
- Dniester 3
- Elbe River 3
- Elbe 3
- Nile River >> Egypt 3
- Nile 3
- Shatt al Arab 3
- Tigris-Euphrates/Shatt al Arab 3