The Day Niagara Falls Ran Dry
http://www.howtobearetronaut.com/201...falls-ran-dry/
“In June 1969, U.S. engineers diverted the flow of the Niagara River away from the American side of the falls for several months.
“Their plan was to remove the large amount of loose rock from the base of the waterfall, an idea which they eventually abandoned due to expense in November of that year.
“During the interim, they studied the riverbed and mechanically bolted and strengthened a number of faults to delay the gradual erosion of the American Falls.
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more at the link. Some old, cool photos there. That must have been quite a sight!
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