About 500,000 gallons of water
93,150,000 US gallons per minute
110 000 m3 (average); see also http://en.wikipedia.org/wiki/Niagara_Falls.
150,000 gallons of water a second. That is a lot of bath tubs being filled each second!
Niagara falls
The amount of time it takes for 3,000,000 gallons of water to flow over Niagara Falls depends on the time of year. During the high flow season, 6 million cubic feet flows over the Falls every minute on average. During low flow season, about 4 million
About 54,936,933,200 gallons per 24 hours.
About 3.24 billion (3.24*1010) gallons of water per day flows over Niagara Falls.
6 million cubic feet per minute or, 100000 cubic ft per second...
50000 U.S. Gallons go over the falls per second . so 50000x60 per minute 50000x60x60 per hour 50000x60x60x24 per day 50000x60x60x24x30 per month 50000x60x60x24x30 per year
if you refer to the speed of the water as it falls, it is at 9.8m/s
Niagara Falls flows between Niagara Falls and Niagara Falls. The water at Niagara Falls drops -- from the crest of the falls to the bottom of the falls. The Niagara River flows from Lake Erie to the crest of the falls, over the falls, and thence to Lake Ontario. The Niagara River forms part of the international boundary between Canada and the US. There are two cities at Niagara Falls, and both are named Niagara Falls. The one in Canada is Niagara Falls, Ontario, and the one in the US is Niagara Falls, New York.
The average flow rate of water over the lip of Niagara Falls is 202,000 cubic feet per second or 5,720 meters cubed per second. This rate increases in wet seasons while tapering in drier or colder seasons. Speed wise, in easier to relate terms, the water is moving over the falls at 32 kilometers per hour, or 20 miles per hour. Specifically, the Canadian/Horseshoe falls goes at 32kph, but the American falls I don't know.