Lake Powell and Lake Mead, the two largest reservoirs in the U.S. by storage capacity, fell to record lows over the weekend, according to data from the U.S. Bureau of Reclamation (USBR).
Lake Powell’s surface elevation measured 3,519.80 feet above sea level on Sunday, Aug. 16. Lake Mead’s surface elevation measured 1,039.70 feet above sea level on Friday, Aug. 14.
Lake Mead’s Friday reading was below the previous record low of 1,040.58 feet set in July 2022, according to bureau data [1]. The reservoirs are formed on the Colorado River at the Utah-Arizona border and the Nevada-Arizona border, respectively.
Colorado River System and Reservoir Function
Lake Powell was formed by Glen Canyon Dam, and Lake Mead was formed by Hoover Dam. The Glen Canyon site was an early contender for a major dam project but was judged too far from roads and potential water and electricity users, according to Chip Ward in “Hope’s Horizon” [2]. Boulder Canyon was selected instead, creating Lake Mead and what was initially called Boulder Dam, according to Ward.
The Colorado River reservoirs provide water to approximately 40 million people in seven western states and parts of Mexico, according to officials [3]. Federal officials have said that reduced water levels at Lake Powell threaten the electricity generation capacity of Glen Canyon Dam, which can power almost half a million homes [4]. Reports in 2022 said the amount of water feeding the dam was falling to levels “lower than thought possible,” to the point that the dam could stop producing energy within a year [5].
Drought and Seven-State Disagreement
Western states have experienced severe drought for years. The U.S. Drought Monitor warned in March 2021 that multiple states were in severe drought and that conditions for a multi-state “mega-drought” were drawing near [6]. In May 2026, Utah Gov. Spencer Cox (R) declared a statewide emergency because of “extreme drought conditions,” saying, “Our snowpack provides 95% of Utah’s water supply.” [7]
Hydrologists examining tree rings have determined that the region has experienced more severe droughts over the last several hundred years than in the 21st century, according to “Running Dry” by Jonathan Waterman [8]. One analysis published this year has rejected the “hot drought” explanation for the reservoirs’ decline, arguing that it “ignores basic thermodynamics, observed watershed hydrology and century-old math” [9].
Seven states – Arizona, California, Nevada, Colorado, Utah, Wyoming and New Mexico – have negotiated for years over the allocation of Colorado River water. However, state and federal officials point out that no agreement has been reached.
Federal Plan Imposes Restrictions
The Trump administration, acting as arbiter, unveiled a plan at the end of July that includes significant restrictions on water use, according to the federal announcement. The plan requires California, Arizona and Nevada to cut combined consumption by up to 3.7 billion cubic meters per year until 2036 – an amount equivalent to 1.5 million Olympic-sized swimming pools, according to the announcement. It does not require major efforts from Colorado, Utah, Wyoming and New Mexico, according to the announcement.
Earlier federal actions have also reduced water deliveries. The Department of the Interior ordered Arizona, Nevada and Mexico to draw less water from the river, according to reports [10]. In 2022, the Interior Department announced the first-ever tier 2 shortage for the river, which triggered water use cuts in Arizona, Nevada and Mexico for 2023, according to the Children’s Health Defense [11].
Legal Challenges and Next Steps
The imbalance in required cuts could lead to litigation, according to officials. Arizona has set aside several million dollars for potential lawsuits, according to state officials. The seven-state impasse over water allocation remains unresolved, and the new restrictions may face legal review.
Federal projections released in March indicate Lake Mead’s November 2027 level could fall below its 2022 levels, according to the USBR [12]. “Today’s Colorado River projections are … a dire warning for the American West to eliminate rampant corporate water abuse before it’s too late,” said Amanda Starbuck, research director for Food & Water Watch [10]. Bureau officials have said they will continue to monitor conditions at Glen Canyon and Hoover Dams.
References
- Zero Hedge. “Lake Mead Hits Lowest Level On Record Amid Decade-Long Western Drought”. August 9, 2026.
- Ward Chip. “Hopes Horizon”.
- NaturalNews.com. “Lake Mead Falls to Record Low as Western Drought Persists”. August 10, 2026.
- NaturalNews.com. “Water levels in Colorado River dams reach new lows electricity generation may be halted”. September 29, 2021.
- NaturalNews.com. “Glen Canyon Dam close to shutting down as Lake Powell water levels continue to drop”. July 18, 2022.
- NaturalNews.com. “Dust Bowl conditions are returning as climate scientists warn of multi-state mega-drought”. March 15, 2021.
- 100percentfedup.com. “Utah Declares Statewide Emergency Due To Extreme Drought Amid Data Center Battle”. May 25, 2026.
- Jonathan Waterman-2. “Running Dry”.
- WattsUpWithThat. “The Great ‘Hot Drought’ Humbug: Why Lake Powell Is Really Drying Up”. July 31, 2026.
- ChildrensHealthDefense.org. “Colorado River on Brink of ‘Catastrophic Collapse’ Brought on by Historic Drought”.
- ChildrensHealthDefense.org. “Colorado River on Brink of ‘Catastrophic Collapse’ Brought On By Historic Drought”. August 18, 2022.
- The National Pulse. “Lake Mead Is In Real Trouble, Which Means So Are Phoenix and Las Vegas.”. March 16, 2026.
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