20 Million Litres of Floodwater Managed, 16°C Cooling: These Engineering Marvels Bring Climate Impact into Public Spaces
In Chennai, a first-of-its-kind sponge infrastructure model is transforming underutilised urban land into climate-resilient public assets. Using geospatial analytics and hydrological modelling, these parks manage up to 90% of runoff, store over 30 million litres of water, and reduce urban heat by up to 16°C—demonstrating how data-driven, nature-based systems can deliver measurable impact at city scale.
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Disaster Management
Technology
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Impact Metrics
30 million+ litres
of water storage capacity, enabling large-scale flood mitigation and water retention
90% incoming runoff
runoff managed on-site, significantly reducing urban flooding and pressure on drainage systems.
20 million+ litres
of stormwater handled during peak monsoon events, demonstrating real-world resilience under stress conditions.
30,000 m³ storage capacity
of wetland, with 25-year storm event resilience, strengthening climate preparedness.
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