Lesson #103: Niagara Falls Goes Dry

In the summer/fall of 1969, the Army Corps of Engineers “dried up” the American side (not the Horseshoe Falls) of Niagara Falls in order to conduct a geological survey of the rock bed underneath. Water was diverted by way of a 600-foot cofferdam and once the water was stopped, surveyors found the remains of a man, a woman and a deer. Once the cliff face and base were dry, engineers began scaling (as in what you’d do to a fish) loose rock, cleaning the rocks of algae, drilling for rock samples and installing a system of hydration pipes under the rock face to keep it from crumbling.*

I imagine the sound must have been very strange. Niagara Falls makes a LOT of noise. Diverting a third of the water must have made it seem oddly quiet.

Some good pictures and more information here.

2 thoughts on “Lesson #103: Niagara Falls Goes Dry

  1. Rachel says:

    When I first read the title of this post, I thought it said “Niagara Falls Does Cry.” I was very interested because after four years of school nearby, I’d never heard any urban legends/stories/etc. about the waterfalls crying; alas, I realized my dyslexic mistake upon reading this.

    Thought you’d get a chuckle out of the image of waterfalls crying, though.

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