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Transboundary river

A transboundary river is a river that crosses at least one political border, either a border within a state or an international boundary. Bangladesh has the highest number of these rivers, with at least 58 major rivers that enter the country from the Republic of India, including two of the world's largest rivers, the Brahmaputra and the Ganges. The Naf River is the only river that flows via Bangladesh into Myanmar.

The hydrologic and political effects of rivers that cross significant boundaries are enormous. Rivers have positive effects in that they carry a significant amount of sediment, which aids in building land in estuarine regions. However, this sediment raises the height of riverbeds, thereby causing flooding. International conventions governing water sharing have led to complex political disputes.[1]

List of major international transboundary rivers

River Length (km) Countries
Amazon 6,500  Brazil
Brahmaputra 3,848  Bangladesh
Colorado 2,333  Mexico
 United States
Columbia 2,000  Canada
 United States
Danube 2,860  Austria
Daugava 1,020  Belarus
Dnieper 2,200  Belarus
Euphrates 2,800  Iraq
Ganges 3,084  Bangladesh
Ichamati 334  Bangladesh
Indus 3,500  China
Irrawaddy 2,210  China
Mekong 4,350  Cambodia
Meuse 925  Belgium
Niger 4,180  Benin
Nile 6,853  Burundi
 DR Congo
 South Sudan
Rhine 1,230  Austria
Rhône 813  France
Rio Grande 3,051  Mexico
 United States
Tagus 1,007  Portugal
Tigris 1,850  Iraq
Yukon 3,190  Canada
 United States
Zambezi 2,474  Angola


  1. ^ "India-Bangladesh Political Relations" (PDF). Sharing of River Waters. Ministry of External Affairs, Government of India, February 2007. Archived from the original (PDF) on 2007-09-25. Retrieved 2007-12-18.
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Transboundary river
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