Las Vegas Drilled a Tunnel Under Lake Mead in Case the Lake Drops Too Low
“Las Vegas draws roughly 90 percent of its water from Lake Mead. As the reservoir declined, the original 1971 intake was left above the waterline and the second intake approached exposure. Between 2008 and 2015 the Southern Nevada Water Authority bored a three-mile tunnel beneath the lake bed and connected upward into the deepest section…