The longest dam in India is _______.
Hirakud dam is built across the Mahanadi River inOrissa. Hirakud
Dam is one of the longest dams in the world about 26 km in length. The Hirakud
Reservoir is 55 km long used as multipurpose scheme intended for flood control,
irrigation and power generation. It was one of the major multipurpose river
valley project after Independence.