Roughly 170,000 cubic metres of water tumble down the Niagara Falls every minute. But for a few months in 1969 the falls were completely dry, and last year a Connecticut man found never-before-seen photos of the strange occasion.
In 1965, the local Niagara Falls Gazette revealed that there was an abundance of loose rock at the base of the Niagara Falls - it had collected primarily during two large rockslides in 1931 and 1954 - and warned that if left unremoved, the debris could cause the falls to stop flowing altogether. After a few years of indecision, the US Army Corps of Engineers was given the task of diverting the falls, and on June 12, 1969, they completed a 27,800-ton rock dam that halted the flow of the Niagara Falls for the first time in 12,000 years.
Last year, a man named Russ Glasson found a shoebox of 35mm slides that showed the Niagara Falls as it had rarely been seen before: completely dry. The photos had been taken by his in-laws throughout the second half of 1969.
In November of that year, after removing some of the loose rocks and shoring up the falls with mechanical bolts, the engineers destroyed their dam and rewatered the falls. [Flickr and Daily Mail via Neatorama]