The Glen Canyon Dam in Arizona was built from 1956 to 1964 to use the power of the Colorado River for the power supply of the American West. At the same time the second largest barrier lake »Lake Powell» was created.
But, the dam also had a major impact on the habitat of the Colorado River. He had no longer sufficient sediments that was transported by the river. These are required for the building of sandbanks in the river. The sandbanks provide important habitats for rare species of fishes and also be used as a ground for campsites.
In order to support the building of sandbanks in the Colorado River again, was conducted by the authorities a controlled opening of the dam. With success: The flood wave has helped to build new sandbanks and thus to protect the habitat. It was therefore decided now regularly conduct such flood waves. Thus, the river continues to provide the basis for power supply, ecology and tourism.