Lower Gangetic Delta: An Overview

  • Abhijit Mitra


Two mighty river systems, the Ganga and the Brahmaputra, enter the plains of Bengal through a 150-km-wide stretch as Rajmahal–Meghalaya gap. These two rivers drain a large catchment area covering more than 1.50 million sq. km. and carry annually 1254 billion cubic meters of water with suspended sediment load of about 1000 million tonnes. The fragile Himalayan terrain and southwest monsoon are two major factors contributing to huge volume of water and sediment load. After entering Bengal, the Ganga flows in southeast direction, and the Brahmaputra flows in the southern direction before they unite at a place called Gaolando in Bangladesh. These two rivers discharged into the sea independently till 1830. Further downstream, another river called Meghna joins, and the combined flow goes into the Bay of Bengal (Fig. 1.1).

Supplementary material

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2019

Authors and Affiliations

  • Abhijit Mitra
    • 1
  1. 1.Department of Marine ScienceUniversity of CalcuttaKolkataIndia

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