(The white washtub ring is the old water level that can be seen all around the lake}
The Hoover Dam (originally known as the Boulder Dam) was erected in the 1930s, and by 1943 Lake Mead had risen out of the Colorado River to a height of 1,220 feet above sea level.
But this year, on October 18, Lake Mead reached a record low, dropping down to just 1083.9 feet, having lost about 12 stories of height. Though still about eight feet above the designated point of a critical water shortage, the low water levels are a warning signal to the millions of people in Southwest states who rely on this resource for drinking water and irrigation.
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