The federal government started a manmade flood in Glen Canyon Dam Wednesday in order to save the ecosystem of the Grand Canyon.
The three-day flood will hopefully restore the canyon's ecosystem, which was permanently changed after the construction of the Glen Canyon Dam in 1963.
The canyon will get about four to five times the normal amount of water released from the dam during this week's flood, which will redistribute the sediment throughout the canyon. The shift helped speed the extinction of four fish species and push two others, including the endangered humpback chub, near the edge.
The Colorado River has gone from muddy and warm to cold and clean due to the flood.
The Glen Canyon Dam is located in Page, Arizona. The most famous dam that flows along the Colorado River is the Hoover Dam, located on the border between Arizona and Nevada.
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