Kulamavu Dam, one of the triumvirate dams of the Idukki reservoir project, is constructed in 1961 to restrict the flow of water into Kallivally rivulet. The 100 ft gravity dam built of concrete or stone masonry on the Periyar River stretches out between rocky mountains and forms 33 sq.km reservoir. Kulamavu, one of the places to visit in Idukki, is also a famous hill station in Idukki district.
The 60 sq. km artificial lake formed as a result of the construction of the 3 dams, add scenic beauty to the rugged rocky terrain and verdant vegetation around it.
The hill station charms the visitors with the picturesque countryside, rubber and spice plantations. The visitors go gaga over the various species of birds such as darter or snakebird, kingfisher etc. that inhabit the hill station. Kaulamavu offers remarkable trekking trails with equally enchanting environs that kick the adrenalin of hiking or trekking fanatics.