New satellite images show a drastic drop in water levels at 's Lake Mead over the years - as the area grapples with what may be one of the worst droughts in US history. The startling images come as it's been revealed the historic lake - a reservoir formed by the Hoover Dam on the River - has dropped to its lowest level in 85 years, when the Dust Bowl devastated the American Great Plains in April 1937. Once the largest lake in terms of capacity in the US, the body of water has fallen on hard times the past 22 years, recording record drops year after year.
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