The Idukki Dam is a double curvature Arch dam built throughout the Periyar River in a slim gorge between granite hills locally known as Kuravan and Kurathi in Kerala, India. At 168.91 metres, it's far one of the maximum arch dams in Asia. It is constructed and owned by using the Kerala State Electricity Board. It helps a 780 MW hydroelectric electricity station in Moolamattom, which started out producing power on four October 1975. The dam kind is a concrete, double curvature parabolic, skinny arc dam. This dam turned into built along side two other dams at Cheruthoni and Kulamavu. Together, the three dams have created an synthetic lake that is 60 km² in location.
The stored water is used to provide strength on the Moolamattom Power house, that is located inner close by rocky caves. The Government of Canada aided within the building of the dam with long time loans and offers. The concept of constructing a dam for power technology became first conceived in 1919 in a record submitted by way of Italian engineer Jacob to the Travancore government, which changed into rejected. As in line with records, Shri Chemban Karuvellayan Kolumban,the pinnacle of 'Oorali' race all through 1922, confirmed the manner to the Malankara Estate Superintendent W. J. John and his buddy AC Thomas Edattu, who have been on searching trip to forests close to the existing Arch Dam.