Understanding dynamics of large rivers aided by satellite remote sensing: a case study from Lower Ganga plains, India

Sinha, Rajiv; Ghosh, Santosh

doi:10.1080/10106049.2011.620180

Cited by 76 publications

(23 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…River discharge and the sediments are independent variables for stable meandering channels like the Chenab River which have less erosive energy due to which they do not migrate considerably within a small span of time. Therefore a major contribution in morphology and behaviour of a river reach can be caused due to water and sediment discharges from upstream (Yeasmin & Islam, 2011;Sinha & Ghosh, 2012). In-channel structures like check dams increase the potential of downstream erosion (Boix-Fayos et al, 2008).…”

Section: Siltation and Change In River Coursementioning

confidence: 99%

Transboundary impact assessment of Indian dams: a case study of Chenab River Basin in perspective of Indus Water Treaty

Ahmad

Iqbal

2015

Water Policy

View full text Add to dashboard Cite

Several transboundary rivers are being shared in South Asia by neighbouring states within a certain framework. A comparative analysis of the Indus Water Treaty has been carried out with other South Asian water treaties while suggesting measures to enhance mutual cooperation over shared rivers between India and Pakistan. With a specific focus on Chenab River, transboundary impact assessments of Indian dams have been carried out keeping in view the aspects of quantity, quality and temporal change in river course. A decreasing trend and significant fluctuation in river discharge was observed with an average decrease of 0.5 billion (10 9 ) cubic metres per year in annual inflow. In terms of water quality, pH (7.90 to 8.06), nitrates and other parameters were found within permissible limits. Total coliform (34 to 280 no/100 ml) and faecal coliform (21 to 193 no/100 ml) values were higher than permissible limits in three streams, whereas Escherichia coli was found þve in only the Jummu Tawi River. Water was found unsuitable for drinking while suitable for agriculture and aquatic life. Temporal analysis shows significant change in river course over a span of 40 years. As a result of impact assessment evolving threats and their remedial measures have been suggested.

show abstract

Section: Siltation and Change In River Coursementioning

confidence: 99%

Transboundary impact assessment of Indian dams: a case study of Chenab River Basin in perspective of Indus Water Treaty

Ahmad

Iqbal

2015

Water Policy

View full text Add to dashboard Cite

show abstract

“…The study reach surface morphology is composed of quarternary fluvial processes, underlying uneven geologic basement, long term climatic transformation and superimposition. The present conditions of the south bengal river system are characterised by large amount of water release from the Farakka barrage to the Padma, gradual reduction in the stream power of Ganga's ditributaries (i.e., Bhairab, Jalangi, Mathabhanga and Bhagirathi) (Basu and Sen, 1997;Sinha and Ghosh 2012), southward hanging of the Damodar's distributaries and palaeo existence of its eastward original path etc. (Basu 1964;Rudra 2014).…”

Section: Regional Settingsmentioning

confidence: 99%

“…The channel bank movement largely depends on bank composition and stream power which help to identify whether a channel is avulsed or not (Anderson et al 1996;Keen-Zebert et al 2013). Along with the mentioned factors, coexisting stratigraphic sequences to the channel are very useful evidence to analyse avulsive nature of the channel and new floodplain construction mechanism (Sinha 1996;Sinha and Ghosh 2012). Apart from this, there are many leaving landforms and exhumed features which develop during the transformation of a channel portion to a new floodplain or vice versa.…”

Section: Introductionmentioning

confidence: 99%

Bank vulnerability and avulsion modeling of the Bhagirathi-Hugli river between Ajay and Jalangi confluences in lower Ganga Plain, India

Pal

Biswas

Pramanik

et al. 2016

Model. Earth Syst. Environ.

View full text Add to dashboard Cite

The emergence of the study of fluvial dynamics of the alluvial monsoon rivers especially in India is being enriched through the application of remote sensing and GIS techniques. To study fluvial dynamics over time, channel avulsion no doubt is one of the most considerable phenomena. The study section (*75 km) in between the two confluences of the Bhagirathi River i.e., Ajay (Katwa) and Jalangi River (Nabadwip) confluence in Lower Ganga Plain of West Bengal is highly oscillatory in nature. Several satellite images and toposheets of different time periods (1955, 1973, 1990 and 2011) have been used in order to analyse the avulsive nature in this section of the river. These fluvial features (cut offs, ox-bow lakes, point bars etc.) form as a result of channel avulsion and have been identified with the help of Landsat satellite images. The decadal differences in sinuosity ratio in different parts of the studied section, channel migration rate and avulsion model explain the dynamic nature and crucial portions of high bank erosion rate of the channel in the mentioned time period. For both the reaches (R1 and R2), meander loop cut offs are dominant rather than lateral avulsion in the context of aggregate channel migration that also reflects the instability and erosional vulnerability at different meander bends.

show abstract

“…Several reaches around Narora, Kanpur (both in Class IV), and Farakka (Class X) barrages along the Ganga river have seen significant modifications in terms of channel morphology both upstream and downstream of the barrage (Rudra, ; Sinha & Ghosh, ). The engineering assumption that jacketing the river would increase the velocity leading to scouring has instead resulted in silting of river beds and increased water logging and soil salinity in the adjoining floodplains.…”

Section: Discussionmentioning

confidence: 99%

Geomorphic diversity as a river management tool and its application to the Ganga River, India

Sinha

Mohanta

Jain

et al. 2017

River Research & Apps

View full text Add to dashboard Cite

Understanding of geomorphic processes and the determination of geomorphic diversity in catchments are prerequisites for the sustainable rehabilitation of river systems and for reach-scale assessment of river health. The Ganga River system in India is a large, complex system consisting of several long tributaries, some >1,000 km, originating from 2 distinct hinterlands-the Himalaya to the north and the cratons to the south. Traversing through a diverse climatic regime across the Plain and through precipitation zones ranging from 600 mm/year near Delhi to 1,200 mm/year in the eastern plains, the Ganga River system has formed very diverse landform assemblages in 3 major geomorphic domains. We have recognized 10 different river classes for the trunk river from Gangotri (source) to Farakka (upstream of its confluence with the Brahmaputra) based on (a) landscape setting, (b) channel and active floodplain properties, and (c) channel planform parameters.The mountainous stretch is characterized by steep valleys and bedrock channels and is dominated by large-scale sediment production and transport through hill slope processes. The alluvial part of the river is characterized by 8 different river classes of varying reach lengths (60-300 km) many of which show sharp transitions in landscape setting. We have highlighted the application of this approach for the assessment of habitat suitability, environmental flows, and flood risk all of which have been significantly modified during the last few decades due to large-scale anthropogenic disturbances. We suggest that the diversity embedded in this geomorphic framework can be useful for developing a sustainable river management programme to "work with" the contemporary character and behaviour of rivers.

show abstract

Understanding dynamics of large rivers aided by satellite remote sensing: a case study from Lower Ganga plains, India

Cited by 76 publications

References 9 publications

Transboundary impact assessment of Indian dams: a case study of Chenab River Basin in perspective of Indus Water Treaty

Transboundary impact assessment of Indian dams: a case study of Chenab River Basin in perspective of Indus Water Treaty

Bank vulnerability and avulsion modeling of the Bhagirathi-Hugli river between Ajay and Jalangi confluences in lower Ganga Plain, India

Geomorphic diversity as a river management tool and its application to the Ganga River, India

Contact Info

Product

Resources

About