Kalpasar Project

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The Kalpasar Project or the Gulf of Khambhat Development Project is a proposed water and transport infrastructure project in Gujarat, India. It envisages constructing a dyke across the Gulf of Khambhat to create a large freshwater coastal reservoir by storing runoff from rivers draining into the gulf, including the Mahi, Sabarmati, Dhadhar and coastal rivers of Saurashtra. The project has undergone several revisions since it was first proposed. Earlier versions envisaged a larger dam with a tidal power component, but the tidal power component was later dropped from the proposal. The 2022 pre-feasibility report described a proposed Kalpasar dyke of about 60.13 km (37.36 mi), including about 26.7 km (16.6 mi) in the gulf, with a freshwater reservoir of about 7,800 million cubic metres and an estimated cost of ₹100,200 crore. An environmental clearance application submitted in May 2026 gave an updated project estimate of ₹133,246 crore (US$14 billion). Spending on feasibility studies began in 2004. As of December 2025, the detailed project report was at the finalisation stage. A later revised alignment kept the Narmada's discharge outside the proposed freshwater reservoir. In May 2026, India and the Netherlands signed a Letter of Intent for technical cooperation on the Kalpasar Project, while the Government of Gujarat submitted an application to the Ministry of Environment, Forest and Climate Change to begin detailed environmental studies for the project.. The Bhadbhut barrage on the Narmada River, associated with the wider Kalpasar planning framework, is under construction. Plans for an expressway linking Bhavnagar and Bharuch via the dyke began consultation in May 2026.