Incorporating Hydromorphological Assessments in the Fluvial Geomorphology Domain for Transitioning Towards Restorative River Science—Context, Concepts and Criteria

Mondal, Sayoni; Patel, Priyank Pravin

doi:10.1007/978-3-031-11181-5_4

Cited by 5 publications

(2 citation statements)

References 111 publications

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“…The River Kosi, whose course is along the western margin of the Tista basin, has a similar avulsion history despite multiple attempts at regulation (Sinha, 2008). Consideration of river hydromorphology, channel pattern changes and streamflow sediment alterations are crucial in managing riparian zones (Mondal & Patel, 2021, 2022), moreover, in such regulated avulsive rivers (Ghosh, 2021; Ghosh & Munoz‐Arriola, 2023). For this, characterization of the channel pattern using RBi values together with artificial intelligence‐based simulations of channel change may enable river managers to better map erosion/deposition scenarios, especially considering regulation structures.…”

Section: Discussionmentioning

confidence: 99%

A new braiding index to assess river regulation effects in multi‐thread channels: Insights from a highly regulated Himalayan river

Ghosh,

Chakraborty,

Patel

2024

River Research & Apps

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River regulation by dams and embankments drastically reduce/alter flow, which affects the natural channel pattern. Existing braiding indices have seldom incorporated the effects of diurnal flow variations caused by hydropeaking, leading to over/underestimation of the braiding intensity. These indices consider only the visible wet channels, ignoring the existence of dry channels that are activated only episodically during phases of water release from hydropower dams. We have extracted the dry channels (those that are periodically wet) coursing across the channel belt of the highly regulated River Tista from Landsat images between 1977 and 2014, using Normalized Difference Wetness Index values. These were combined with existing wet channel widths and numbers to formulate the Regulated Braiding Index (RBi) for characterizing channel braiding in the Tista's course over the Himalayan foothill plains. Overall, the widths and numbers of wet channels decreased by 63% and 25%, respectively, during the regulated years (2003 and 2014) as compared to pre‐dam years (1977 and 1995) due to the collective operation of 14 upstream dams/barrages (having cumulative ~89 million m3 reservoir capacity), whose operations reduced the braiding intensity (eliciting lower RBi values). Further, the number of high braiding reaches decreased by half while low braiding stretches rose by 10% in comparison to the pre‐dam period due to reduced/regulated flow. Comparative analysis of derived RBi values with three existing braiding indices revealed that RBi values consistently decreased near barrages, bridges, and within embankment‐confined reaches, unlike the other indices, thus providing a better framework for assessing expected river regulation effects.

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Section: Discussionmentioning

confidence: 99%

A new braiding index to assess river regulation effects in multi‐thread channels: Insights from a highly regulated Himalayan river

Ghosh,

Chakraborty,

Patel

2024

River Research & Apps

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“…A watershed is another name for an ecosystem that includes the primary components of soil, water, vegetation, and people along with all their activities. As befits an ecosystem, in a watershed, there are various interactions between physical and biotic factors that are important in maintaining balance erosion and sedimentation [25].…”

Section: Literature Reviewmentioning

confidence: 99%

Identification of Diatoms in the Upstream, Middle, and Downstream Ciliwung River as a Diagnostic Tool for Drowning

Pellondo'u

Toya²,

Novelyn³

2023

IJTDH

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Drowning is death caused by asphyxia due to the aspiration of fluids into the airways or lungs, resulting in airway obstruction within 24 hours. One of the examinations to establish the diagnosis of drowning victims is a laboratory examination of diatom identification. This research aims to know the morphological description and types of diatoms that live along the Upper, Middle, and Lower Ciliwung Watersheds, to facilitate the identification of drowning victims found in the Ciliwung River. The research design is qualitative descriptive. The data in this study were the results of observations and analysis of Ciliwung river water samples at the Research Laboratory of the Faculty of Medicine, Indonesian Christian University. The study's results found 17 different species at the Katulampa Dam, 19 at the Ciliwung Bridge, and 14 at the Manggarai Sluice Gate. From a total of 22 species of diatoms found, overall, the widest distribution was Nitzschia sp, Navicula sp, Fragilaria sp, and Cyclotella sp. The distribution and types of diatoms found are closely related to current velocity and water discharge, temperature, and river turbidity.

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An Account of the Flood History in the Ghatal Region of West Bengal, India

Mondal

Patel

2023

Springer Geography

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Incorporating Hydromorphological Assessments in the Fluvial Geomorphology Domain for Transitioning Towards Restorative River Science—Context, Concepts and Criteria

Cited by 5 publications

References 111 publications

A new braiding index to assess river regulation effects in multi‐thread channels: Insights from a highly regulated Himalayan river

A new braiding index to assess river regulation effects in multi‐thread channels: Insights from a highly regulated Himalayan river

Identification of Diatoms in the Upstream, Middle, and Downstream Ciliwung River as a Diagnostic Tool for Drowning

An Account of the Flood History in the Ghatal Region of West Bengal, India

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