 During peak daytime tourist hours, more than 168,000 m3 (six million cubic feet) of water goes over the crest of the falls every minute.Horseshoe Falls is the most powerful waterfall in North America, as measured by flow rate.The falls are north-northwest of Buffalo, New York, and south-southeast of Toronto, between the twin cities of Niagara Falls, Ontario, and Niagara Falls, New York.