Drainage Morphometric Analysis of the Brahmaputra River Basin (Bangladesh) During 1955–2023 Using Satellite and Geospatial Data

Document Type

Article

Publication Date

12-8-2025

Abstract

The Brahmaputra River Basin (BRB)- a dynamic river system due to natural processes and tectonic forces, severely impact regional socio-economic activities and environmental sustainability. In the present study, high-resolution global digital elevation model (GDEM), topographic survey maps (1955), and multi-temporal Landsat satellite images (1975–2023) have been used to study different watershed levels detailed morphometric parameters of the Brahmaputra River, New (NBR), and Old (OBR) in Bangladesh. The study observed multiple channel sections linked to tectonic activities controlled by surrounding fault systems that confirm the morphometric changes over the past 68 years. Moreover, this study further contributes to the understanding of river dynamics by overlaying the river layer with areal changes, five different transects based on width measurements, spatio-temporal migration rate, and analyzing the multiple sinuosity indices variations at spatio-temporal scale for the periods 1955–2023. The present results will help the geospatial planners and policy makers to understand the ongoing morpho-tectonic activities that will help mitigate the associated natural hazards along the river basin.

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This article was originally published in Journal of the Indian Society of Remote Sensing in 2025. https://doi.org/10.1007/s12524-025-02350-5

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1

Copyright

Indian Society of Remote Sensing

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