Niagara Falls without water, 1969 For six months in 1969 North Americas most iconic waterfall was purposely “de-watered”. This was done by the US army corps of engineers, because they wanted to conduct a geological survey of the falls’ rock face. They were concerned that it was becoming too destabilized from erosion. In order to do this the army had to built a 600ft (182 m) dam across the Niagara River. This dam consisted of 27,800 tons of rock. In November 1969 in front of 2,650 spectators, the

Back in 1969, Niagara Falls ran dry for six months, and photographers captured unique perspectives of the once-in-a-lifetime event. https://bit.ly/3UujYEI | AccuWeather