The Lost Canyon Under Lake Powell
Lake Powell, which some people consider the most beautiful place on earth and others view as an abomination, lies in slickrock country, about two hundred and fifty miles south of Salt Lake City. Lake Powell, which isn’t actually a lake, is an invention of the United States Bureau of Reclamation. In the early nineteen-sixties, the bureau erected a seven-hundred-and-ten-foot-tall concrete arch dam on the Colorado River, near where it crosses from Utah into Arizona. The bureau named the dam for the stretch of the river that it was submerging—Glen Canyon. Behind the dam, water backed up for almost a hundred and ninety miles, creating a reservoir with the shape of a snake that’s swallowed a porcupine. At full capacity, Lake Powell stores twenty-four million acre-feet of water, enough to flood the entire state of Massachusetts hip-deep.