Impact of Structural Interventions on Morphological Changes of Teesta River Using River Sensing Approach

Ovi Ranjan Saha^1,

¹Department of Water Resources Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh

Cite this paper:
Ovi Ranjan Saha. Impact of Structural Interventions on Morphological Changes of Teesta River Using River Sensing Approach. American Journal of Water Resources. 2024; 12(3):93-97. doi: 10.12691/ajwr-12-3-4

Abstract

Bangladesh, a predominantly riverine country, is characterized by a complex network of approximately 405 rivers, including 57 transboundary waterways. The Teesta, one of the country's major transboundary rivers, traverses 115 kilometers of its total 315-kilometer length within Bangladesh, significantly impacting the livelihoods of its riparian populations. To address irrigation demands, a barrage was constructed across the Teesta River in 1998. This study investigates the morphological alterations induced by the Teesta Barrage on the river's dynamics, specifically focusing on bar formation, sinuosity index, and river width. Employing Landsat satellite imagery from 1988 to 2020 and GIS analysis, the research reveals a substantial increase in bar area post-barrage construction. While the maximum sinuosity index has risen, the minimum and average values have declined, indicative of altered channel patterns. Concurrently, the river's width has expanded, with an increasing disparity between its maximum and minimum dimensions, signifying heightened channel dynamism. These findings underscore the adverse impacts of the Teesta Barrage on the river's morphology. Consequently, comprehensive studies on the river's morphological evolution are imperative to develop effective mitigation strategies for the affected communities.

Keywords:
Teesta River Teesta Barrage GIS remote sensing morphology bar dynamics sinuosity

This work is licensed under a Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

References:

[1]	Nath, B., Naznin, S.N. and Alak, P., 2013. Trends analysis of river bank erosion at Chandpur, Bangladesh: A remote sensing and GIS approach. International Journal of Geomatics and Geosciences, 3(3), pp.454-463.
[2]	BWDB (2011) Rivers of Bangladesh, Bangladesh Water Development Board, August.
[3]	Rivers of Bangladesh - Wikipedia. https:// en.wikipedia.org/ wiki/ List_of_rivers_of_Bangladesh. Accessed on 19 November 2021.
[4]	Teesta River - Wikimapia. http://wikimapia.org/4710513/Teesta-Barrage-Bangladesh. Accessed on 19 November 2021.
[5]	Teesta River - Wikipedia. https:// en.wikipedia.org/ wiki/ Teesta_River. Accessed on 19 November 2021.
[6]	Khan, S.T., Alam, S., Azam, N., Debnath, M., Mojlish, A.K., Rahman, A., Alvee, F.M. and Maliha, M., 2022. A Study on Riverbank Erosion-Accretion and Bar Dynamics of Dharla River Using Multi-Temporal Satellite Images. In Advances in Civil Engineering (pp. 407-417). Springer, Singapore.
[7]	Khan, I., 2018. Effect in the water balance of the Teesta River basin due to different climate changes and upstream development.
[8]	Pal, P.K., Rahman, A. and Yunus, A., 2017. Analysis on river bank erosion-accretion and bar dynamics using multi-temporal satellite images. American Journal of Water Resources, 5(4), pp.132-141.
[9]	Nabi, M.R., Rashid, M.S. and Hossain, M.I., 2016. Historical Bankline Shifting Since 1760s: A GIS and Remote Sensing Based Case Study of Meghna River Plate of Rennell’s Atlas. Int J Sci Res Publ, 6, pp.473-483.
[10]	Khan, I., Ahammad, M. and Sarker, S., 2014. A Study on River Bank Erosion of Jamuna River Using GIS and Remote Sensing Technology.
[11]	Chisty, K., Islam, M. and Misuk, S.S., 2014, December. Analysis of river bank erosion and deposition of Karnafuli River in Chittagong, Bangladesh using remote sensing and GIS approach. In 2nd International Conference on Advances in Civil Engineering (pp. 26-28).
[12]	Sarker, M.H. and Thorne, C.R., 2006. Morphological response of the Brahmaputra–Padma–Lower Meghna River system to the Assam earthquake of 1950. Braided rivers: process, deposits, ecology and management, 21, pp.289-310.
[13]	Khan, A.S., 2001. Morphological changes due to the construction of a barrage on the Teesta River.
[14]	Mazumder, M. H., Hossain, M. T., Uddin, M. S., Saha, O. R., & Zobeyer, A. T. M. Riverbank Migration and Island Dynamics at the Selected Reach of Chandpur Confluence Using Satellite Images. Available at SSRN 4582890.
[15]	Saha, S.K., Saha, O.R., Tasnim, A., Hossain, T.T., Hossain, M.A., Rahman, A., Alvee, F.M. and Maliha, M., IMPACT OF STRUCTURAL INTERVENTIONS ON RIVER BANK EROSSION-ACCRETION RATES OF TEESTA RIVER USING REMOTE SENSING APPROACH.
[16]	Bangladesh Bureau of Statistics (2012) Census of Population 2011. Dhaka.
[17]	Tista River - Banglapedia. http:// en.banglapedia.org / index.php?title=Tista_River. Accessed on 19 November 2021.
[18]	Stokes, D., 2013. Political economy analysis of the Teesta River Basin. Asia Foundation.
[19]	Khalid, A.R.M., 2013. Water negotiations in the Ganges-Brahmaputra-Meghna Basin-“multilateral” is the way forward. Hindu, 309, p.327.
[20]	Charlton, R 2008 Fundamental of Fluvial (New York: Routledge Taylor & Francis Group).