Niagara Falls is one of the most famous waterfalls in the world. Located in North America, he separates the American state of New York from Ontario Province in Canada.
In all photos of the Niagara Falls, we see how 170 thousand cubic meters of water will be lowered from a height of several tens of meters. But once for more than ten thousand years of its existence, Niagara Falls remained without water. And it happened due to human intervention.
However, the reasons for such an intervention were more than reasonable: soil erosion under the waterfalls slowly promoted them forward over the course and the United States with Canada, as well as the rest of the world, could soon lose this unique creation of nature. To slow down this process, it was decided to explore the bottom of the waterfall, remove the stones applied and pull the resulting faults.
In 1969, the construction of the dam above the Niagara River began, and by June 12, the water of the river was assigned to the Canadian part of the waterfall using a huge dam, consisting of 27, 800 stones.
After completing all the necessary work, the engineers disassembled the dam, and soon the waterfall was again filled with water.