To stand beside the Falls of Niagara and to hear the incessant roaring thunder and to feel the earth moving to the vibration of the sheer volume of water is to understand the grandeur and dynamism of Niagara Falls.Niagara Falls is the third greatest waterfalls in the world in terms of  volume of water

Boyoma [Stanley] Falls - Congo - 17,000 m3/sec
Khone Falls - Laos - 11,610 m3/sec
Horseshoe Falls - Niagara Falls - 5,830m3/sec