Kulamavu lies in Idukki district, Kerala, South India. Dam was constructed to prevent the water escape through a rivulet called Kalivally, 30 km west to Idukki Arch Dam. It is a 100 metres tall Masonry gravity dam.
Kulamavu is known for its dam which is a part of the Idukki Hydro Electric Project. The Idukki arch dam (Asia’s first arch dam) is supported by two other smaller dams - one at Cheruthoni and the other one at Kulamavu.
Boating in the artificial lake at the dam is an enjoyable experience. Various species of birds have been sighted in this area. Some of the common ones are: darter or snake bird and king fisher.