As a kid my family rented an RV and we meandered our way through NY state for about 3 weeks one summer. It was fun, horrifying, smelly, memorable and adventurous. We made our way to Niagra Falls and stood at the top staring at the almost unbelievable volume of water being swept over the edge every second. The roar of the falls was deafening. It made me very nervous. It was extremely humbling to be in the presence of such a fierce force of mother nature.
Here we have Will Gadd's ascent of the frozen sections of the world's largest flowing falls. Tucked between the borders of Canada and the United States, Niagra Falls is actually 3 different waterfalls coming together at the end of the Niagra Gorge. The falls holds the title of having the largest flow rate of any other waterfall.
More than six million cubic feet (168,000 m3) of water falls over the crest line every minute in high flow, and almost four million cubic feet (110,000 m3) on average. -Wikipedia
Whoa, that's a whole heckuva lot of water. Prepare to be astonished by this video!