Idukki Dam - Asia's biggest Arch Dam of 555 feet height proudly standing between the two mountains - 'Kuravanmala' (839 meters) and 'Kurathimala' (925 meters ). This prestigeous project of our nation is situated in Idukki District and its underground Power House is located at Moolamattom which is about 19 kms from Thodupuzha. Idukki Dam is 43 kms away from Moolamattom. It started generating power on 4 October 1975. Technically, the dam type is a concrete double, curvature parabolic, thin arc dam.

This dam was constructed along with two other dams at Cheruthony and Kulamavu. Together, the three dams have created an artificial lake that is 60 km