The Idukki arch dam, 168.91 m tall, and the two other dams of the Idukki Hydro Electric Project

Background

The district administration records the Idukki Dam in Kerala as a 168.91 m (554 ft) tall arch dam.
An arch dam carries the water load through a curved wall rather than through sheer weight.
The Idukki Hydro Electric Project does not rest on this dam alone.
Cheruthoni dam is recorded as a part of the Idukki Hydro Electric Project and is located in Idukki District of Kerala State.
Kulamavu dam is likewise recorded as a part of the Idukki Hydro Electric Project in the same district.
The three dams together hold the storage on which the project's generation depends.