What is river on which the hirakud dam is built?

The Hirakud Dam is built on the Mahanadi River in the state of Odisha, India. It is one of the longest earthen dams in the world and plays a crucial role in flood control, irrigation, and hydroelectric power generation in the region. The dam's construction began in 1948 and was completed in 1957, creating the Hirakud Reservoir.