Examining the utility of river restoration approaches for flood mitigation and channel stability enhancement: a recent review

Mondal, Sayoni; Patel, Priyank Pravin

doi:10.1007/s12665-018-7381-y

Cited by 40 publications

(25 citation statements)

References 288 publications

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“…An overall improvement in the condition of the stream's adjacent riparian tracts is also required (like rejuvenating the Okhla Bird Sanctuary area- Adak, 2017b ; Dixit, 2019 ; Bhatia and Vats, 2019 ), with suitable floodplain zonation and wetland regeneration, which are crucial towards maintaining river health ( Babu et al, 2013 ). The use of vegetative buffers along the river can help mitigate seasonal floods ( Mondal and Patel, 2020 ), absorb contaminants and enable better hyporheic exchanges ( Mondal and Patel, 2018 ), all factors in enhancing environmental flows and having a healthier aquatic ecosystem ( NIH, 2006 ), with the presently allocated eflow amounts being lower than what is suitable ( Soni et al, 2014 ). Urban greening and better land use management practices within the river corridor (cf.…”

Section: Resultsmentioning

confidence: 99%

Some respite for India's dirtiest river? Examining the Yamuna's water quality at Delhi during the COVID-19 lockdown period

Patel

Mondal

Ghosh

2020

Science of The Total Environment

Self Cite

119

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The Yamuna's stretch within Delhi is considered as the dirtiest river reach in India and despite numerous restoration plans, pollution levels have risen unabated. However, the enforcement of a nationwide lockdown due to the ongoing COVID-19 pandemic can possibly provide a ray of hope. We analyze the lockdown's impact on the water quality status of this stretch using a combination of measured parameters and satellite image derived indices. Class C Water Quality Index estimates of nine stations indicate an improvement of 37% during the lockdown period. The Biological Oxygen Demand and Chemical Oxygen Demand values reduced by 42.83% and 39.25%, respectively, compared to the pre-lockdown phase, while Faecal Coliform declined by over 40%. Similar analysis of 20 major drains that meet the Yamuna revealed declining effluent loads and discernable improvements in drain contaminant status were ascertained via a hierarchical cluster analysis. Reach-wise suspended particulate matter content, turbidity and algal signatures were derived from multi-temporal Landsat-8 images of prior and ongoing lockdown periods for 117 channel segment zones. These parameters also declined notably within most stretches, although their extents were spatially varied. While the partial/non-operational status of most industries during the lockdown enabled significant reduction in effluent loads and a consequent betterment in the river water quality, its spatial variations and even deterioration in some locations resulted from the largely undiminished inflow of domestic sewage through multiple drains. This study provides an estimate of possible river recovery extents and degree of improvement if deleterious polluting activities and contaminants are regulated properly.

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Section: Resultsmentioning

confidence: 99%

Some respite for India's dirtiest river? Examining the Yamuna's water quality at Delhi during the COVID-19 lockdown period

Patel

Mondal

Ghosh

2020

Science of The Total Environment

Self Cite

119

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“…This has resulted in breaching of the embankment and extensive flooding in Kosi (Sinha et al ., 2008), Indus (Gaurav et al ., 2011), and more recently, major devastation in several rivers draining through Kerala in south India. It has been argued that embankments are not the best strategy for flood management in sediment‐charged tropical rivers (Mondal and Patel, 2018) but this is still the most favoured option across India for several reasons. The monitoring of these embankments for their vulnerability to breaches as a function of change in longitudinal and lateral connectivity over time could provide an important tool for flood risk assessment as well as for identifying ‘hotspots’ of siltation.…”

Section: Future Perspectives On Connectivity Researchmentioning

confidence: 99%

Geomorphic connectivity and its application for understanding landscape complexities: a focus on the hydro‐geomorphic systems of India

Singh

Sinha

Tandon

2020

Earth Surf Processes Landf

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Geomorphic processes operate at multiple spatio‐temporal scales and different levels of hierarchy. It is therefore necessary to understand the linkages of landscapes across various scales and levels to gain insights into their interactions and feedbacks. Connectivity is an emergent property of the hydro‐geomorphic systems, and it is gradually evolving into a unifying concept in geomorphology. The connectivity approach has the potential to be applied extensively to diverse hydro‐geomorphic systems of India to understand their complexity as well as for designing effective management practices for river systems and wetlands, optimizing water resources for agriculture, and monitoring and restoration of habitats. Studies on connectivity, particularly in geomorphic context, have been growing steadily in India, albeit at a much slower pace compared to the global trends. This article undertakes a brief overview of the global developments particularly in terms of providing some clarity among the different types of geomorphic connectivity and their inter‐relationships and feedbacks. We then take stock of the connectivity research in India in recent years as applied in different hydrogeomorphic systems across the country. We utilize a number of Indian case studies to illustrate the important developments and applications of connectivity concepts, and also present future perspective of this important field with special relevance to India. © 2020 John Wiley & Sons, Ltd.

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“…In summary, minimal anthropic intervention in the watercourse is expected, in order to keep its appearance as close as possible to the natural and recapture the characteristics of the watercourse previous to the urbanization process. The financial valuation could be analyzed through the concept of the valorization of the area, given the recovery of degraded areas, the sanitary condition incorporated to eliminate the local pollution, the creation of leisure areas, and equipment for the population [52,69,73,75].…”

Section: Dimensionmentioning

confidence: 99%

Multi-Criteria Decision Method for Sustainable Watercourse Management in Urban Areas

et al. 2020

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The rapid urban growth followed by disordered occupation has been generating significant impacts on cities, bringing losses of an economic and social nature that directly interfere with the well-being of the population. In this work, a proposal for local urban infrastructure problems associated with watercourse management is presented, comparing Sustainable Drainage System (SuDS) techniques and Low-Impact Development (LID) concepts with alternative traditional interventions. The study addresses sustainable alternatives to cope with the urbanization of the Cehab’s open channel, which is an important urban watercourse tributary of the Muriaé River, at the municipality of Itaperuna, Rio de Janeiro—Brazil. The multi-criteria decision-making method called Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) was applied here. The results highlighted the better performance of sustainable techniques when compared to the traditional ones, with an overall advantage of the geogrids and geocells for this case study. The obtained TOPSIS coefficients-C for these techniques were higher (0.59488, for Reach 1; and 0.68656, for Reach 2) than those for the others. This research, therefore, presented an important urban watercourse management methodology that can be further applied to guide sustainable investments and help the decision-making associated with the development of territories.

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Examining the utility of river restoration approaches for flood mitigation and channel stability enhancement: a recent review

Cited by 40 publications

References 288 publications

Some respite for India's dirtiest river? Examining the Yamuna's water quality at Delhi during the COVID-19 lockdown period

Some respite for India's dirtiest river? Examining the Yamuna's water quality at Delhi during the COVID-19 lockdown period

Geomorphic connectivity and its application for understanding landscape complexities: a focus on the hydro‐geomorphic systems of India

Multi-Criteria Decision Method for Sustainable Watercourse Management in Urban Areas

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