Multiple choice Which dam controls the floods in the Mahanadi delta? Jawahar Sagar Dam Gandhi Sagar Dam The Bhakhra Dam The Hirakud Dam Reveal answer Fill a bubble to check yourself D Correct answer Explanation The Hirakud Dam on the Mahanadi River in Odisha is the longest dam in India and was built primarily to control floods in the Mahanadi delta region. It also serves irrigation and power generation purposes.