Niagara Falls sends 6 million cubic feet of water over the falls every minute, but in 1969, the American Falls dwindled to a trickle. Engineers diverted water and removed bedrock to delay erosion. The falls were formed by glacial retreat and provide hydroelectric energy.
The Niagara River sends 6 million cubic feet (169,901 cubic m) of water over Niagara Falls every minute. However, in 1969, the American Falls stream dwindled to a mere trickle. For five months, engineers diverted water at Horseshoe Falls on the Canadian side as they removed bedrock and shored up other areas, in an effort to delay the onset of erosion. At the end of the project, engineers blew up their 600m (183m) high temporary dam and the thunderous wall of water resumed its rush over the falls.
A natural wonder created by glacial retreat:
Niagara Falls is the collective name for three waterfalls that straddle the border between the United States and Canada. They form the southern end of the Niagara Gorge.
The waterfalls combined offer the world’s highest flow rate of any waterfall, with a vertical drop of more than 165 feet (50m). Horseshoe Falls is the most powerful waterfall in North America.
Niagara Falls was formed when glaciers retreated at the end of the last ice age. Niagara Falls provides a valuable source of hydroelectric energy.
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