Recent years have shown a significant increase in the occurrence of floods globally, with an impact on habitation and different sectors of the economy. This, in turn, necessitates the use of different flood mitigation strategies, wherein flood vulnerability assessment plays a significant role. Flood risk increases due to a variety of factors, including rising sea levels, stronger storms, and altered precipitation patterns. Most people in India reside in areas that are extremely vulnerable to severe hydro-meteorological disasters. Chennai, a coastal city in Southern India, has been selected as study region for further detailed investigation. In recent years, Chennai experienced devastating floods, notably in 2015. The natural ability of the environment to absorb and manage floods has been diminished due to rapid urbanization, which induces climate to change. As a result, the study region now faces a greater risk of flooding due to increased frequency and intensity of rainfall in the system. The spatial variation of hazard inducing factors and population statistics were analysed using Geospatial Technology. The social vulnerability of the region was analysed using the GIS Multi-criteria decision analysis approach (MCDA), with criteria weights to incorporate the interests of different stakeholders. IPCC vulnerability assessment framework has been adopted, which is a function of exposure, sensitivity, and adaptive capacity. Based on the findings, by identification of vulnerable hotspots, assessment of the vulnerability to flood, to have efficient flood management in local self-government was demonstrated in this study to improve flood resilience in the study region.

Authors:
Adinarayanane Ramamurthy, Ministry of Education, India
Faiz Ahmed Chundeli, Ministry of Education, India

About the Presenter(s)
Dr. Adinarayanane R, employed as Dean, Planning & Development at School of Planning and Architecture Vijayawada, Government of India. He has experience of 30 years in the academic, professional field of Planning and 50 technical paper publications.

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