Region
Asia
5
India
4
Middle East
3
South Asia
3
Asia, Southeastern
2
Africa
1
Africa South of the Sahara
1
Australia
1
Bicol River (Philippines)
1
Cauvery River (India)
1
Central America
1
Europe
1
Kenya
1
Latin America
1
Mekong River
1
Nicaragua
1
Oceania
1
Red River Delta (Vietnam)
1
South America
1
Tonle Sap (Cambodia : Lake)
1
Zuo River (China)
1