File:Dewatered American Falls (1969) (Niagara Falls, northwest of Buffalo, New York State, USA) (19936707609).jpg

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In 1969, the Niagara River upstream from American Falls was diverted. Water that normally cascaded over American Falls went over nearby Horseshoe Falls. The dewatering project was done for reasons that I can't quite discern from available information. Basically - humans decided to mess around with nature while claiming they're concerned that erosion may destroy the falls.

Hmmm. Erosion formed the falls. Erosion is why this beautiful feature is there. Duh.

Defacing of nature here principally took the form of drilling holes and removing rocks and vegetation from above & below the falls. I'm uncertain about the specific consequences of this extensive official vandalism. How would American Falls and the Niagara River look today if things had been left alone?

The remarkable image shown above depicts a dewatered American Falls. The rocks at & below the lip of the falls are dolostones of the Silurian-aged Lockport Group. This erosion-resistant stratigraphic interval forms an escarpment throughout much of eastern North America (America & Canada), from the Niagara area to Wisconsin. Dolostone is a crystalline-textured chemical sedimentary rock composed of dolomite (CaMg(CO3)2 - calcium magnesium carbonate). Most dolostones form by the diagenetic chemical addition of Mg to pre-existing limestones.

(photo by the New York Power Authority; Niagara Falls State Park public signage)
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Source Dewatered American Falls (1969) (Niagara Falls, northwest of Buffalo, New York State, USA)
Author James St. John

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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/19936707609 (archive). It was reviewed on 28 January 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

28 January 2020

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current02:08, 28 January 2020Thumbnail for version as of 02:08, 28 January 20202,806 × 1,939 (3.22 MB)Ser Amantio di Nicolao (talk | contribs)Transferred from Flickr via #flickr2commons

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