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Glen Canyon Dam is located in northern Arizona, upriver from Grand Canyon National Park. It is the second-largest dam on the Colorado River. The dam is approximately 710 feet tall and 1,560 feet long, and it comprises more than 4.9 million cubic yards of concrete. It created Lake Powell, which extends into Utah. Named after famed explorer John Wesley Powell, the reservoir has the capacity to impound roughly twenty-seven million acre-feet of water, which is the equivalent of nearly two years of the flow of the Colorado River.

In the late 1940s, the Bureau of Reclamation proposed the Colorado River Storage Project (CRSP). This called for the construction of more than ten water projects in the Colorado River's Upper Basin, which comprises Colorado, New Mexico, Utah, ...

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