Will Lake Mead eventually dry up?

But while Lake Mead has filled up slightly since its low point of July 2022, the Bureau of Reclamation anticipates that the water levels will start to decline again come spring. A Bureau of Reclamation study published in January predicted that Lake Mead could reach a new all-time low in 2023.



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“Although every drop counts, the reality is that the rain we received from Tropical Storm Hilary and runoff into the tributaries that enter Lake Mead as well as reduced releases from Hoover Dam — due to a decrease in downstream demand — has had some minor impact on the lake's elevation,” according to U.S. Bureau of ...

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The water levels for Lake Mead are projected to reach slightly over 1,065 feet by January 2024, according to the Bureau of Reclamation, in large part due to an extremely wet winter that eased the effects of the longstanding drought. In October 2022, the water levels were at a historic low, at roughly 1,046 feet.

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Without Lake Mead, Las Vegas would lose access to 90 percent of its water sources. If Lake Mead were to reach dead pool, it would technically still be able to supply drinking water to Las Vegas. But there will not be enough water for agricultural activities.

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As crazy as it sounds, engineers say the idea is technically feasible. It would involve building a system of dams and pipelines to move the water uphill across multiple states over the Continental Divide. Gravity would then work in our favor to drop the water down to the Colorado River watershed.

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Mead reaches dead pool at 895 feet. If Lake Powell reaches dead pool, the US Bureau of Reclamation—which declined our interview requests—would be unable to meet its obligation to deliver water downstream to Lake Mead. In which case, 40 million people would be affected.

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Powell's physical elevation is projected to be 3,574.30 feet on December 31, 2023. 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.

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Hydrology. Lake Mead is fed by the Colorado River and three smaller tributaries: the Virgin and Muddy Rivers and Las Vegas Wash. Gregg Basin and Temple Basin are fed by the mainstream of the Colorado River, which now enters Lake Mead at the northern end of the Gregg Basin, nearly 60 miles upstream of Hoover Dam.

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Lake Mead's dead pool levels are 895 feet above sea level, but power generation may cease at 950 feet, according to the National Parks service. Lake Mead's water levels have been forecast to drop as low as 992 feet by the end of July 2024, with experts predicting that dead pool may be reached in the next few years.

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Since 1983, years of drought along with high water demand have caused the lake to drop by 132 feet. Today, the lake is at only 30% capacity, its lowest level since it was built in the 1930s. Fortunately, heavy rainfall early in 2023 has relieved the situation a little, but only temporarily.

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When the snow eventually begins to melt, gravity will take over. As the water flows down from higher elevations, it begins a long journey that does not end at Lake Mead. According to the Las Vegas Valley Water District (LVVWD) the water will slowly seep into the ground.

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Did Tropical Storm Hilary Affect Lake Mead Water Levels? Lake Mead's water levels, at a record low last year due to ongoing drought, rose a bit during heavy rainfall from Tropical Storm Hilary. But rain isn't the lake's primary source of water.

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After falling to record lows in 2022, Lake Mead has seen its water levels rise 3 feet above projections after a precipitation-heavy winter. But experts warn it's only a temporary reprieve without a comprehensive water management plan.

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If the water levels dip much lower, the Colorado's northernmost reservoir won't have enough in the tank to both fill Lake Mead downstream and generate any hydropower, which would have devastating effects on the electricity grid in the western US.

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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.

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“When we see even significant rainfall in the Las Vegas Valley and the benefit to Lake Mead from that rainfall and all of that runoff, you are looking at, at best, tenths of an inch in changes.

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But that heavy rainfall likely had little effect on Lake Mead's water levels. This weekend brought nearly a monsoon season's worth of precipitation in just a few days. But that heavy rainfall likely had little effect on Lake Mead's water levels.

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