150,000 gallons per seconed
if you refer to the speed of the water as it falls, it is at 9.8m/s
6 million cubic feet per minute or, 100000 cubic ft per second...
Approximately 168,000 cubic meters of water flow over Niagara Falls every minute, which translates to about 5.7 million cubic feet per minute. Over the course of a year, this amounts to around 54 trillion gallons of water cascading over the falls. The immense volume contributes to Niagara Falls being one of the most powerful waterfalls in the world.
Six million cubic feet (168,000 cubic meters) of water flow over the crest every minute during high flow.
About 6 million cubic feet of water flow over Niagara Falls every minute, which adds up to over 85,000 cubic feet per second. This totals to approximately 3,160 tons of water flowing over the falls every second. Over the course of a year, this amounts to roughly 85,000,000,000 liters of water.
110 000 m3 (average); see also http://en.wikipedia.org/wiki/Niagara_Falls.
About 500,000 gallons of water
Niagara Falls - it is the combination of Bridal Veil Falls, Horseshoe Falls and American Falls. American Falls and Bridal Veil Falls are entirely in New York. Horseshoe Falls lies on the border between the USA and Canada.
Havasu Falls, located in the Grand Canyon, has an average flow rate of approximately 100 to 150 cubic feet per second (cfs). This translates to roughly 44,000 to 67,200 gallons of water cascading down the falls every minute. The stunning turquoise waters are a result of the high mineral content in the water, which contributes to the falls' unique coloration.
There are hundreds of gallons of water wasted every minute. Water is wasted by leaving the faucet running, taking long showers, and flushing toilets when unnecessary.
The horse shoe falls is in canada , The bridal veil falls and the american falls arre in america, It is surface water because it comes from Lake Erie
93,150,000 US gallons per minute