The Kalpasar Project, also known as the Gulf of Khambhat Development Project, is a massive infrastructure initiative in Gujarat, India, aimed at building a ~30-km dam across the Gulf of Khambhat. It intends to create the world’s largest freshwater reservoir from river inflows (Narmada, Mahi, Sabarmati), aiming to irrigate over 1 million hectares, supply drinking water to the Saurashtra region. This project will also create Tidal Energy Generation. The top of the dam will feature a 10-lane highway and railway line, drastically cutting travel time between South Gujarat and Saurashtra.