The Mullaperiyar Dam is a masonry dam located on the Periyar River in the Idukki district of Kerala, India. Built in 1895, it was constructed to store water for irrigation purposes in the neighboring state of Tamil Nadu. The dam stands at a height of 53.66 meters and has a length of 1,200 meters. The dam is operated by the Tamil Nadu Water Supply and Drainage Board and plays a crucial role in supplying water for agriculture in the region. It has a reservoir capacity of about 443 million cubic meters, making it an essential resource for both states.