Hirakud Dam one of the longest major earthen dam situated in Sambalpur, Odisha. It is one of the first major multipurpose river valley projects in Independent India. It is designed to control floods in delta area of Mahanadi river. It was inaugurated by our first Prime Minister Jawaharlal Nehru on 13th January 1957 and now it is completed 61 years. Reservoir of the Hirakud Dam is 55km long and total cost of the project was around Rs. 1000 millions in 1957.