Abstract:
The escalation of urbanization alongside climate change has heightened flood
vulnerability in numerous cities globally, including Chennai, India. The swift expansion
of impermeable surfaces and insufficient drainage infrastructure compounds urban flood
risks, resulting in substantial economic, social, and environmental ramifications. In
response, the concept of a sponge city has emerged, advocating for a comprehensive
approach to urban flood management through the integration of green infrastructure,
sustainable drainage systems, and water-sensitive urban design.
This study investigates the feasibility and efficacy of applying the sponge city concept to
mitigate flood risk in Chennai. Employing a combination of literature review, field
surveys, and data analysis, the research assesses Chennai's current flood risk
landscape, identifies primary contributors to urban flooding, and evaluates the potential
of sponge city interventions to bolster resilience against flood hazards.
Utilizing a mixed-methods approach, the research combines quantitative hydrological
modeling techniques with qualitative evaluations of stakeholder perspectives and socioeconomic
impacts. By scrutinizing existing flood management strategies and drawing
lessons from other city case studies, the study identifies effective practices that can
inform the development of a tailored sponge city strategy for Chennai, considering its
distinct socio-environmental context.
Moreover, the thesis explores the challenges and opportunities inherent in implementing
sponge city initiatives, including governance frameworks, financial mechanisms, and
community involvement strategies. It underscores the significance of collaborative multistakeholder
efforts and participatory decision-making processes in fostering resilience
and adaptability to urban flooding.
This research contributes to the growing knowledge base on urban flood risk
management and sustainable urban development. By advocating for the adoption of the
sponge city concept in Chennai, the study aims to equip policymakers, planners, and
practitioners with evidence-based insights and recommendations to enhance the city's
resilience to future flood events while advancing ecological sustainability and socioeconomic
progress.
