Hirakud dam is the longest dam of world.Its located in sambalpur district.I visisite the place last july.In dam the watrer around.Like a sky.In dam there located a jawahar minar.I go to the minar.When you go minar you see all dam situation.In rainy season hirakud dam open the gate.The water pass through the gate.I like this place very much.Best place for also picnic.Please visit and see the dam.