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Long-term water level decline continued, forcing an emergency release of water from the Flaming Gorge Reservoir in July 2021. [10] and by April 22, 2022, Lake Powell was at 3,522.24 feet (1,073.58 m) in elevation – just 22.88% of capacity. This marks the lowest water level for Lake Powell since it was filled in 1963. [11]
Lake Powell is part of the Glen Canyon National Recreation Area, which extends for more than 300 kilometers (186 miles) along the shoreline and side canyons. The primary intended use of Lake Powell’s water is support for agriculture, with a small portion allocated to urban use in Arizona, Nevada, and California.
Water managers are tracking the elevations of Lake Powell and Lake Mead, two of the largest reservoirs in the U.S., as a historic megadrought made worse by climate change grips Western states.
While past satellite missions like the Jason series altimeters (TOPEX/Poseidon, Jason-1, Jason-2, Jason-3) have provided variation in river and lake water surface elevations at select locations, SWOT will provide the first truly global observations of changing water levels, stream slopes, and inundation extents in rivers, lakes, and floodplains ...
In April 2020, snowpack was at 50% of average levels for April. In April 2021, the figure was 62%. By April 2022, snowpack was at just 35% of average levels.
Lake Powell's fall to below 3,525 feet (1,075 meters) puts it at its lowest level since the lake filled after the federal government dammed the Colorado River at Glen Canyon more than a half ...
Water year 2018 had a much lower-than-average snowpack. [280] [281] In July 2021, after two more extremely dry winters, Lake Powell fell below the previous low set in 2005. In response, the Bureau of Reclamation began releasing water from upstream reservoirs in order to keep Powell above the minimum level for hydropower generation.
Located on the Utah-Arizona border, Lake Powell is currently at an all-time low surface elevation of 3,522 feet since it was filled in the 1960s -- holding less than one-fourth of its full capacity.