Study of the Morphological Change of the River Old Brahmaputra and Its Impacts

Abstract

Old Brahmaputra River is one of the main rivers in Bangladesh. In this study, the part of the old Brahmaputra River, offtaking from Jamuna is located under the district of Mymensingh and partially under the district of Tangail, Jamalpur, Sherpur and Netrokona. Analyzing the image of part of the old Brahmaputra River for the years 1997 and 2004, it is found that significant changes have occurred in north eastern part of Mymensingh sadar upazila and less change is found in the lower part which is close to the Mymensingh town where China Bangladesh Friendship Bridge (Shambhuganj Bridge) is situated. Transport of sediment is the major contributing factor of such morphological changes, which causes significant socio-economic impact along the region.