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Say what? Niagara Falls without water?

By GIZMODO
December 22, 2010

Roughly six million cubic feet of water tumble down the Niagara Falls every minute. But for a few months in 1969 the American falls were completely dry, and last year a Connecticut man found never-before-seen photos of the historic occasion.

(From Gizmodo)

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 U.S. Army Corps of Engineers was given the task of diverting the American side of the falls over to Canada, and on June 12, 1969, they completed a 27,800 ton rock dam that halted its flow for the first time in 12,000 years.

From Gimodo

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One Response to Say what? Niagara Falls without water?

  1. Carl Nemo

    December 23, 2010 at 1:19 pm

    Here’s a link for those that would be interested in reading the fascinating geological evolution of the falls and the Great Lakes drainage system from 460 million years ago to present.

    http://www.niagarafrontier.com/origins.html#b

    “The greatest threat to the integrity of the Horseshoe Falls and the American Falls is rock falls. The American Falls has been the victim of many rock falls in the past. As the rock talus collects at the base, it reduces the distance of the water fall and creates more of a cascade effect. In the future substantial rock falls may affect the appearance and change the Falls of Niagara to mere water cascades and/or rapids.” …extract from link material

    Carl Nemo **==