/https%3A//blueprint-api-production.s3.amazonaws.com/uploads/story/thumbnail/33580/24e8075b-3e23-4815-b15a-453acc4e223b.jpg)
Image: Russ Glasson/Barcroft/Getty Images
For several months in 1969, the torrent of water rushing over American Falls, one of three waterfalls that makes up Niagara Falls, was reduced to little more than a trickle.
American Falls is recognizable for the immense rock pile, or talus,...
