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Brahmaputra River System

The Brahmaputra is one of India's largest river systems, originating as the Tsangpo in Tibet near Lake Manasarovar (at approximately 5,150 m altitude), flowing eastward through Tibet, entering India through Arunachal Pradesh (where it is called Dihang/Siang), and traversing the Assam valley as the Brahmaputra before entering Bangladesh (as the Jamuna). It is a braided river in Assam, with a highly dynamic channel that frequently shifts course, making bridge construction challenging.

Key details
  • Total length: approximately 2,900 km (of which approximately 916 km in India)
  • Drainage area in India: approximately 1.94 lakh sq km (covering Arunachal Pradesh, Assam, Nagaland, Meghalaya, Sikkim, and West Bengal)
  • The Brahmaputra carries one of the highest sediment loads of any river globally, contributing to frequent flooding and channel migration
  • Major tributaries in India: Subansiri, Manas, Teesta, Lohit, Dibang, Kameng
  • Brahmaputra is a transboundary river (China-India-Bangladesh); the Brahmaputra Board was established in 1980 under a special Act of Parliament for flood management and irrigation
  • Existing bridges over Brahmaputra near Guwahati: Saraighat Bridge (1962, first bridge over Brahmaputra in India), Naranarayan Setu, Kolia Bhomora Setu, Bogibeel Bridge (2018, longest rail-cum-road bridge in India at 4.94 km)
In the news

Tracked since February 13, 2026 · last seen March 05, 2026 · updates as the daily brief publishes

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