Is Great Salt Lake disappearing?

Each year since 2020, the Great Salt Lake received less than a third of its average (since 1850) stream flow. The lake level fell to the lowest surface elevation ever recorded, 4,188 feet above sea level, in November 2022. The crisis is real. The Great Salt Lake is disappearing.



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A series of unprecedented weather patterns brought not only remnants of the west coast's atmospheric rivers but widespread wet avalanches, which are quickly sending spring runoff to the lake and its tributaries. The Utah department of natural resources announced the Great Salt Lake had reached a record low last fall.

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A recent report found that the lake could essentially disappear within five years. As a key stopover for migrating birds, the lake's loss could undermine whole ecosystems.

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Water experts say it's going to take more than one big year to fill the Great Salt Lake. SALT LAKE CITY — Ever since The Great Salt Lake hit its lowest water level on record in November 2022, concerns over things like arsenic in the exposed lake bed have only grown.

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So just how bad is it, really? A new scientific report warns the lake is on track to disappear in the next five years, unless water use is cut by as much as 50% annually.

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However, the most deleterious effect of the Great Salt Lake drying up is that the air surrounding Salt Lake City could sporadically become poisonous. Since the bed of the Great Salt Lake holds high levels of dangerous particles like arsenic, antimony, copper, zirconium, and various heavy metals.

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The precipitous drop in water levels, which has shrunk the Great Salt Lake's footprint by half over the past few decades, stems from a two-fold problem: Climate change has helped decimate the mountain streams that feed the lake, while demand for the streams' fresh water has ballooned for new development, agriculture ...

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Due to its shallowness (an average of 14 feet deep and a maximum of 35 feet deep), the water level can fall dramatically during dry years and rise during wet years. When snowpack melts in the spring, the lake usually rises about 2 feet. However, record snowpack in 2023 triggered a rise of 5.5 feet!

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One of the world's largest hypersaline lakes, the Great Salt Lake is on the verge of collapse due to climate change, drought, and population pressures that have reduced inflows and shrunk the lake by more than two-thirds.

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The precipitous drop in water levels, which has shrunk the Great Salt Lake's footprint by half in the last decades, stems from a two-fold problem: Climate change has decimated the mountain streams that feed the lake, while demand for that same freshwater has ballooned for new development, agriculture and industry.

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The Great Salt Lake is home to many important biological and wildlife species, from archaea, to bacteria, to phytoplankton (400+ species). Perhaps the three most apparent species that can be seen with the naked eye are brine shrimp (tons), brine flies (billions) and birds (millions).

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Because of the abundant algae and halophiles, as well as the high salinity, the lake does not support fish — but it teems with brine shrimp and brine flies, which provide essential nutrition for migrating birds.

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Most recent data within water-surface elevations show a downward trend. With climate change and Utah's ever growing human population, we expect this negative trend to continue. In fact, it is estimated that the lake is 11 feet lower due to human diversions.

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Compass Minerals announced in 2021 it was seeking to extract lithium from the Great Salt Lake under a pilot program. The company, which has a plant in Ogden, said it was utilizing new methods of extracting the precious resource within the ambient brine of the Great Salt Lake.

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Great Salt Lake has ranged in salinity from about 5 percent to 27 percent over the past 22 years. This is two to nine times saltier than the ocean's 3 percent. At present Farmington Bay is approximately 5 percent salt, while the North arm is 26 percent and the South arm is 14 percent.

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Water levels With the amount of snow and rain Utah has received this winter, the lake's current levels are at about 4,190 feet — above the record low hit last November — and that's before the spring runoff. Candice Hasenyager, the director of the Utah Division of Water Resources, said it's already an improvement.

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However, the most deleterious effect of the Great Salt Lake drying up is that the air surrounding Salt Lake City could sporadically become poisonous.

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