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Evaluating Pluvial Flood Risks in the Area of Delhi: The Case of Kamla Market Circle, Delhi, India
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1  School of Planning and Architecture; New Delhi; 110002; India
Academic Editor: Hossein Azadi

Abstract:

The National Capital Territory of Delhi in India is a rapidly metropolitanized city, and like many others, it faces the risk of urban flooding. The city experiences pluvial flooding, a phenomenon where stormwater drainage systems are unable to handle the volume of water from heavy rainfall and is highly vulnerable to both riverine and urban flooding, posing significant threats to public health, infrastructure, and the local economy. Recent data from the Delhi Traffic Police indicates an increasing frequency of waterlogging incidents in this area between 2011 and 2021. This paper examines the flood risks and identifies parameters that exploit the vulnerability of an area to pluvial flooding, using the case of Kamla Market Circle in the central district of Delhi. It is a densely populated area in the district that has recently become prone to stormwater flooding. The research employs a literature study and field surveys to investigate these factors. The key parameters analysed, such as the degree of urbanisation, shifts in land-use, the capacity and performance of the stormwater drainage system, usage patterns by the local community, and the microtopography of the Kamla Market Circle, may have collectively contributed to the area's heightened vulnerability to pluvial flooding. The findings show that drainage inefficiencies and disruptions to the natural slope due to altered microtopography are the most critical contributors to recurring water accumulation. Moreover, informal modifications to streetscapes and inadequate waste management exacerbate localised flooding. A few context-specific interventions, such as improving surface permeability and regular drainage maintenance, are briefly discussed. This paper presents potential mitigation strategies to address the identified pluvial flood risks in the Kamla Market Circle of Delhi. By offering a comprehensive understanding of the area's flood vulnerabilities, the research aims to support the development of effective, location-specific flood management approaches for this high-risk urban zone.

Keywords: Urban Flooding, Urbanisation, Pluvial Flooding, Waterlogging, Space Protection

 
 
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