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Information about Hirakud DamHirakud Dam is constructed across the Mahanadi River in Sambalpur district, Orissa. It is world's largest earthen dam and one of longest dams in the world. Hirakud Dam is situated at a distance of 15 kilometre from Sambalpur city.nformation about Hirakud DamHirakud Dam is constructed across the Mahanadi River in Sambalpur district, Orissa. It is world's largest earthen dam and one of longest dams in the world. Hirakud Dam is situated at a distance of 15 kilometre from Sambalpur city.
  The world's largest hydroelectric dam is the Three Gorges Dam located on the Yangtze River in China.   Anoth â¦ er famous dam is the Hoover Dam, located on the Colorado River at the boarder of Arizona and Nevada (US Route 93).  Anmother one is Kaptai Dam, Chittagong, Bangladesh.onfidence votes 5.4K. What I've been able to find for the Hoover Dam says ~$50 million in the 1930's, today that's roughly $690 million. The entire Boulder Canyon Project cost around $165 million, which included the Hoover Dam.