Visit Mullaperiyar Dam in Kerala - Complete guide with visiting hours, historical significance, architecture details, travel tips, and nearby attractions. Plan your visit today. Your website description goes here. Mullaperiyar Dam is a masonry gravity dam on the Periyar River in Thekkady, Idukki district, Kerala, known for its strategic importance and history. Mullaperiyar dam is situated at the confluence of the Mullayar and Periyar rivers. The dam is located entirely in Kerala. It was built in the late 1800s in the princely state of Travancore (present-day Kerala) and given to British-ruled Madras Presidency on a 999-year lease in 1886. The agreement granted full rights to the Tamil Nadu to construct irrigation projects on the land. The dam was built to divert eastwards a part of the west-flowing Periyar river, to feed the arid areas of Tamil ...