Water quality simulation under river restoration measures for the Delhi stretch of river Yamuna, India

Sudha Sippi and Dipteek Parmar ()
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Sudha Sippi: Harcourt Butler Technical University, Kanpur
Dipteek Parmar: Harcourt Butler Technical University, Kanpur

Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, 2024, vol. 26, issue 3, No 16, 5914 pages

Abstract: Abstract It is currently unclear how river restoration based on hydro-geometrical modifications, dredging, and creating a barrier instead of its removal on a river would affect the water quality in urban rivers. This work attempts to fill this gap in our understanding by simulating the water quality of a highly critical 22-km-long Delhi stretch of river Yamuna in terms of DO, BOD, and total coliform after the implementation of these river restoration measures. Four scenarios were conceptualized based on these restoration measures and water quality simulated. These are: scenario I: simulate the impact of varying the width uniformly for all reaches of the study stretch on the water quality, scenario II: simulate the impact of increased depth by controlled dredging. Scenario III (a) closing the ITO barrage gate and then simulating river water quality from Wazirabad barrage to ITO barrage and (b) closing the ITO barrage and simulation of water quality from ITO barrage to Okhla barrage. Results reveal that the water quality improved significantly in scenario I and scenario II. Scenario III did not yield desirable results in terms of water quality improvement. To the best of the author’s knowledge, this is the first attempt involving river morphometry changes using the QUAL2k model for the Delhi stretch of river Yamuna.

Keywords: River restoration; Water resources; Climate change; Water quality simulation; QUAL2K (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1007/s10668-023-02943-5

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