Water Basin
- Helmand 3
- Mekong River 3
- Mekong 3
- Po River 3
- Po 3
- Rio Grande (North America) 3
- Rio Grande >> Mexico >> North America 3
- Río Chira 3
- Río Túmbez 3
- Shatt al Arab 3
- Tigris River >> Basra Governorate >> Iraq 3
- Tigris-Euphrates/Shatt al Arab 3
- Tumbes 3
- Fiume Isonzo 2
- General 2
- Isonzo 2
- Niger River >> Nigeria 2
- Niger 2
- Rhone 2
- Rhône 2