To feed these massive delivery systems, water flows out of Lake Mead through Hoover Dam, Lake Mohave and Davis Dam, eventually reaching Lake Havasu.
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Lake Powell and Lake Mead are unlikely to refill for another 50 years - and would need SIX consecutive years of deadly atmospheric rivers to replenish.
The Southern Nevada Water Authority already pumps water to the Las Vegas Valley from near the bottom of Lake Mead. But it may need to pump from even deeper in the shrinking reservoir to protect the quality of that water.
Water taken directly from Lake Mead, the Colorado River or the underground water table isn't safe for people to drink, but those are the sources of Southern Nevada's drinking water.
Lake Mead has dropped by 70% due to droughts in the West and it will take many years to refill again, naturally. The reservoir is vitally important to millions of people as a source of water, electricity, and recreation.
With intervening flows between Lake Powell and Lake Mead of 1.32 maf in CY 2023, Lake Mead's physical elevation is projected to be 1,065.42 feet on December 31, 2023. The WY 2023 unregulated inflow into Lake Powell in the August Probable Maximum inflow scenario is 13.75 maf, or 143% of average.
Hoover Dam, a concrete-arch gravity dam, captures water from the Colorado River and fills Lake Mead. At capacity (1,221.4 feet above sea level), the lake is the nation's largest reservoir, able to contain 28.9 million acre-feet of water covering about 248 square miles.
Record snowfall in the West wasn't enough to alleviate drought impacting Lake Mead. The record snowfall in the West wasn't enough to permanently alter the course of the drought impacting Lake Mead. FOX Weather's Robert Ray reports on the ongoing water issues and the Colorado River.
“It has some impact, but it's not very much. I don't think you would notice Lake Mead appreciably rising just from the results of big rainstorms,” Miller said. After years of mostly seeing its water levels fall, Lake Mead has steadily risen since April.
But that heavy rainfall likely had little effect on Lake Mead's water levels. The reservoir sat at about 1,063.4 feet in elevation when the rains started on Friday. By Monday night, it had ticked up to 1,063.8.
Officials have warned that dead pool could be reached by 2025, if the lake continues drying up at the rate it is currently. But Glennon said that one would need a crystal ball to know for sure. The longer we wait, the worse it will get and there's a specific reason for this.
There are many places to swim in the bright blue waters of Lake Mead and Lake Mohave. Be aware that there are no lifeguards in the park. Always wear a life jacket. Most fatalities at Lake Mead National Recreation Area could have been avoided if the person in the water was wearing a life jacket.
Lake ElevationLake Mead began filling in late 1934 and the average daily surface elevations from 1 February 1935, when elevation data began to be collected, through 2009 are shown in Figure 2. The reservoir did not reach 1,045 ft above msl, the elevation of the upper outlet, until 1 May 1937.