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Niagara Falls is the [collective] name for three waterfalls that straddle the international [border] between the [Canadian] province of Ontario and the [American] state of New York. From [largest t]o smallest, the [three] waterfalls are the Horseshoe Falls, the American Falls and the Bridal Veil Falls. [Located] on the Niagara River, which drains Lake Erie into Lake Ontario, the combined falls form the highest flow rate of any waterfall in [North] America that has a vertical drop of [more] than [50 m]. During peak daytime tourist hours, more [than] 168,000 [m3] 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.  Niagara Falls was formed when glaciers receded at the end of the Wisconsin glaciation (the last ice age), and water from the newly formed Great Lakes carved a path through the Niagara Escarpment en route to the Atlantic Ocean. Niagara Falls is famed both for its [beauty] and as a valuable source of [hydroelectric] power. Balancing recreational, commercial, and [industrial] uses has been a challenge for the stewards of the falls since the [19th] century..

The USA - Niagara Falls

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