Evolution of river course and morphometric features of the River Ganga: A case study of up and downstream of Farakka Barrage

Sarif, Md Nawaj; Siddiqui, Lubna; Islam, S. S.; Parveen, Neha; Saha, Monojit

doi:10.1016/j.iswcr.2021.01.006

Cited by 25 publications

(7 citation statements)

References 20 publications

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“…The magnitude of accretion on the left bank has typically been greater than the magnitude of erosion on the right bank, and their rates have only slightly changed from 1990 to 2015, as predicted. Between 1990 and 2015, the left bank had more accretion than erosion, resulting in lower net movement rates than the right bank, which is in line with earlier research by Sarif et al (2021).…”

Section: Discussionsupporting

confidence: 89%

“…In contrast, for the long-term analysis, the average erosion and accretion rates are 90 and 104 m/y on the left bank, 75 and 50 m/y on the right bank, respectively, which are identical with the work of and Sarif et al (2021). The right bank experienced more severe erosion, resulting in a quicker migration rate than the left bank, which experienced both erosion and accretion, resulting in relatively modest net movement rates (Sarif et al, 2021). The Ganga-Jamuna River's average short and long-term migration ndings show a particularly dynamic form of erosion and accretion processes that contribute to channel shifting, as seen by its high short-term range of erosion and accretion rates.…”

Section: Discussionmentioning

confidence: 75%

“…The mean erosion and accretion rates estimated from the short-term analysis, where the migration rate is determined based on short-term changes between six accessible consecutive pictures, are 227 and 271 m/y on the left bank and 187 and 148 m/y on the right bank. In contrast, for the long-term analysis, the average erosion and accretion rates are 90 and 104 m/y on the left bank, 75 and 50 m/y on the right bank, respectively, which are identical with the work of and Sarif et al (2021). The right bank experienced more severe erosion, resulting in a quicker migration rate than the left bank, which experienced both erosion and accretion, resulting in relatively modest net movement rates (Sarif et al, 2021).…”

Section: Discussionmentioning

confidence: 85%

“…The erosion and accretion rates vary considerably throughout the river, and they appear to be impacted by the river's meandering feature and ow direction, according to early analyses of overlay maps of bank experienced both erosion and accretion, resulting in relatively modest net movement rates (Sarif et al, 2021). The Ganga-Jamuna River's average short and long-term migration ndings show a particularly dynamic form of erosion and accretion processes that contribute to channel shifting, as seen by its high short-term range of erosion and accretion rates.…”

Section: Discussionmentioning

confidence: 99%

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Assessing the Long-Term Planform Dynamics of Ganges-Jamuna Confluence With the Aid of Remote Sensing and GIS

Khan

Roy

Mazumder

et al. 2021

Preprint

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The Ganges-Jamuna-Padma confluence is one of the world's most active confluences. The confluence of two of the world's greatest rivers, the Ganges and the Brahmaputra, makes this a globally significant site. Severe erosion along the banks has been caused by morphological changes in this region. Riverbank erosion is one of Bangladesh's most serious problems, as it necessitates costly intervention. Riverbank erosion in Bangladesh affects millions of people each year as a result of erosion in this confluence zone. As a result, it's critical to comprehend the confluence's morphological changing pattern. This study aims to quantify actual bank shifting around the confluence of the Ganges, Jamuna, and Padma in terms of shifting rate and area during a twenty-five-year period (1990-2015). To conduct this study the collected satellite image were geo-referenced and digitize bank lines from using ArcGIS program. The bank line is the linear structure that divides the river channel's outer border from the flood plains. The distance between the extreme margins of the left and right banks, including mid-channel sandbars, was measured to determine channel width variation. To assess the maturity of change, this time frame is subdivided into five phases, each lasting five years. In addition, the long-term shift from 1972 to 2015 is qualitatively noticeable. This morphological alteration was studied using LANDSAT satellite images. The research gives current and trustworthy information on the Ganga-Jamuna confluence's planform dynamics. This research will be useful in the planning and execution of drainage development plans and erosion control strategies in this critical confluence zone.

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Section: Discussionsupporting

confidence: 89%

Section: Discussionmentioning

confidence: 75%

Section: Discussionmentioning

confidence: 85%

Section: Discussionmentioning

confidence: 99%

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Assessing the Long-Term Planform Dynamics of Ganges-Jamuna Confluence With the Aid of Remote Sensing and GIS

Khan

Roy

Mazumder

et al. 2021

Preprint

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“…Sudden channel shifting represent a typical geomorphological phenomenon in the evolution of wandering river, posing significant risks to river regulation works, water supply systems, and riparian villages, especially in densely populated regions globally 1 – 4 . For instance, in 2018, a channel shifting in the Ganga River led to the disappearance of dozens of houses within a 72-h period in Gopalpur, India 1 , 5 . Similarly, in 2013, the channel of the Lower Yellow River (LYR) adjacent to Zhengzhou city was shifted 2 km to the north.…”

Section: Introductionmentioning

confidence: 99%

A cusp catastrophe model for analyzing sudden channel shifting in wandering reach of the Lower Yellow River

Zhang,

Jiang,

et al. 2023

Sci Rep

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Sudden channel shifting of wandering rivers poses significant challenges for river engineering, flood control strategies, and the security of water resources. This study proposes a novel analytical model to quantitatively assess such channel shifts based on the cusp catastrophe theory. Utilizing bathymetric data from 93 river sections collected biannually between 2015 and 2019, a comprehensive investigation of channel instability in the wandering reach of the Lower Yellow River was conducted. The results show that both lateral and longitudinal stabilities in the Huayuankou-Gaocun section were generally favorable. For the most part of the selected sections demonstrated a propensity for gradual change. Out of the 93 sections, totally 45 were identified as being susceptible to sudden channel shifts. These vulnerable sections were predominantly located in two highly active reaches—Xiaodabin-Jinglonggong and Huayuankou-Zhaolanzhuang—during the period from 2015 to 2017, excluding the 2018–2019 non-flood season. In the latter non-flood period, nearly half of the sections in the downstream reach from Jinglonggong displayed instability. Our findings are consistent closely with empirical observations from the Lower Yellow River. Additionally, the changed flow and sediment conditions in the 2015–2019 and the efficiency of guide works have significant effects on the stability of river channels.

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Large Dams, Upstream Responses, and Riverbank Erosion: Experience from the Farakka Barrage Operation in India

Sarkar

Mishra²

2022

Geography of the Physical Environment

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Evolution of river course and morphometric features of the River Ganga: A case study of up and downstream of Farakka Barrage

Cited by 25 publications

References 20 publications

Assessing the Long-Term Planform Dynamics of Ganges-Jamuna Confluence With the Aid of Remote Sensing and GIS

Assessing the Long-Term Planform Dynamics of Ganges-Jamuna Confluence With the Aid of Remote Sensing and GIS

A cusp catastrophe model for analyzing sudden channel shifting in wandering reach of the Lower Yellow River

Large Dams, Upstream Responses, and Riverbank Erosion: Experience from the Farakka Barrage Operation in India

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