I’ve read that Niagara Falls erodes backwards towards Lake Erie at a rate of 3 feet per year. This means that in a few hundred, maybe thousand (maybe even longer), the falls would have eroded all the way to Lake Erie. What will happen when it does? Will the lake’s floor begin to erode as well or will the water even out? I can’t wrap my head around it.
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The erosion has been reduced to about 1 foot per year. At that rate, if nothing changes, it will take more than 400,000 years for it to reach Lake Erie.
For a comparison, the last major ice age ended about 11,000 years ago.
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