IIT-Madras Centre of Excellence on Climate Change Impacts on Coastal Infrastructure developed Coastal Vulnerability Index (CVI) maps for Chennai and Karaikal, assessing impacts of sea-level rise and storm surges on coastal areas vulnerable to climate-related hazards.

Flood inundation modelling and mapping for Ennore in Chennai developed to aid disaster preparedness and urban planning. Models assess impact of cyclones, storm surges, extreme rainfall, shoreline erosion and sea-level rise on coastal areas.

Advanced climate, cyclone, storm-surge, wave, hydrodynamic and morphodynamic models tailored to Indian coastal conditions developed. Novel wind-merging technique aimed at improving storm-surge predictions.

Research examined vulnerability of coastal infrastructure. Structural health monitoring approaches track climate-driven deterioration of port infrastructure. Climate-resilient reservoir management strategies proposed for flood-prone urban areas.

Measures developed to prevent and mitigate saltwater intrusion in coastal regions. Climate-resilient wastewater treatment solutions developed, including patented in-stream wastewater treatment method.

Community-based adaptation framework BASIEC developed to support communities responding to sea-level rise and coastal hazards.

Project involves 15 co-principal investigators from four IIT-M departments. Produced 73 journal articles, six book chapters, one edited book, 60 conference papers and one patent. Findings presented at IAHR World Congress 2025 in Singapore.

GCC is developing a 22-acre waterbody near Ernavoor (Annai Sivagami Nagar pond) under railway property with in-principle approval via revenue-sharing arrangement. Project planned for inauguration in Feb 2026. Plans include kayaking and rowing, following success of boating in Madhavaram and Manali lakes. Public amenities: waiting hall, toilets, ticketing facilities, walking track, food court. Coaching for water sports will be offered to benefit youngsters in the locality.

At the ‘Tiruvottiyur Makkal Sangamam’ at Perundalaivar Kamarajar Mandapam, organised by the Federation of North Chennai Residents Welfare Associations and the Village Coordination Committee, residents sought:

• Raise and strengthen both banks of the Buckingham Canal by 1 metre; prevent industrial wastewater and thermal power plant ash from entering the canal and estuary; deepen and widen Ennore estuary to help Kosasthalaiyar river water reach the sea.
• Expand Metrorail to Ennore and complete the Annamalai Nagar-Wimco railway subway; provide playgrounds and gymnasiums.
• Introduce self-certification for individual houses up to 3,000 sq ft, excluding multi-storey buildings.
• Take action against industries violating pollution rules, continuously monitor air, water and soil quality, and disclose results transparently.
• Ensure regular drinking-water supply, underground sewerage connections and integrated stormwater drains.
• Issue pattas to eligible long-term residents on government and temple lands while protecting water bodies and catchment areas; provide sale deeds to people who paid for houses built by the Tamil Nadu Urban Habitat Development Board.

The Tamil Nadu Road Development Company cancelled the tender for designing and building the approximately 27-km Section V of the Chennai Peripheral Ring Road, from Singaperumal Koil to Poonjeri, for administrative reasons.

The 133.64-km access-controlled, six-lane dual carriageway will have two-lane service roads on both sides and an Intelligent Transport System. It aims to connect southern Tamil Nadu with Ennore and Kattupalli ports. The overall project cost is ₹17,958.39 crore; Section V has Japan International Cooperation Agency funding of 49,847 million yen.

Section I has JICA funding of 40,074 million yen. Sections II and III have funding of US$478 million from the Asian Infrastructure Investment Bank and OPEC Fund for International Development. Section IV is complete; a detailed project report is being prepared to upgrade it as an access-controlled road.

The 132.87-km, six-lane access-controlled Chennai Peripheral Ring Road (CPRR), developed by TNRDC under the Tamil Nadu Highways Department, will connect Ennore Port to Poonjeri near Mamallapuram through five sections. The ₹12,301-crore project is funded by JICA, AIIB and the OPEC Fund for International Development. Its proposed 60-metre right of way includes six main lanes and two service lanes on each side; design speed is 120 km/h. Mahabalipuram–Sriperumbudur travel time is expected to fall to 40 minutes.

• Section 4, Sriperumbudur–Singaperumalkoil, is operational.
• Sections 2 and 3, Thatchur–Sengadu (about 56.2 km), were nearing completion in early 2026, funded by an AIIB loan of USD 378 million and OFID financing.
• Section 5, Singaperumalkoil–Mamallapuram (27.41 km), was upgraded from four to six lanes. A tender was floated in December 2025, though the article also says tendering had not yet occurred as of its update; land acquisition was in its final stage.
• Section 1, Ennore Port–Thatchur (25.4 km), is delayed until 2027, with relocation of 12 water tanks and power-line rerouting among the obstacles.

Acquisition across unfinished sections covers more than 234 hectares in over 30 villages and affects about 676 families. Kattupalli, Minjur, Thiruvottiyur, Vandalur and Kovalam are among affected villages. Sriperumbudur land rose 96.0% in three years and 145.0% in five, while apartment prices fell 10.3% in the past year. The article flags service-road acquisition, displacement, delays and speculative ECR plot listings near Mamallapuram. It cites Mahindra World City, Zoho, Ford and SRM Institute as existing demand drivers near Sriperumbudur, and the Singaperumal Koil Railway Overpass as a planned GST Road connection.