Is the Great Salt Lake growing or Shrinking?

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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According to a recent study by Brigham Young University, it's possible that Great Salt Lake could dry up completely in the next five years.

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The lawsuit follows a recent report by scientists at Brigham Young University and other institutions warning that the Great Salt Lake could dry up within five years.

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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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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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SALT LAKE CITY (ABC4) — The Utah Division of Water Resources is sharing good news about the impacts all the rain is having on the Great Salt Lake, whose water levels reached a historic low last year.

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Within years, the lake's ecosystems could collapse and millions will be exposed to toxic dust contained within the drying lakebed, unless drastic steps are taken to cut water use. A team of 32 scientists and conservationists caution that the lake could decline beyond recognition in just five years.

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Less water going in means higher concentrations of salt and minerals, which threatens the crucial ecological role saline lakes play across the West, as well as the health of the people who live nearby.

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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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The shallow bottom of Great Salt Lake supports a microbial carpet that harness the sun's energy through the process of photosynthesis. This carpet is made up of a community of microbes, including several types of cyanobacteria (also known as blue-green algae), algae and other organisms.

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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 best place to swim or float in the lake is at Antelope Island State Park, where white oolitic sand beaches provide easy access to the lake without the brine flies that are prevalent on other areas of the shoreline. The beach area also has showers to rinse off the salty water.

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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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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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The Smell of the Great Salt Lake There are a handful of different reasons for this. The first is that the lake carries huge amounts of salinity. This means that less bacterial sulfates which make hydrogen sulfide. A second source of the lake smell is the combination of low depth and low oxygen where the lake is.

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Four rivers, the Bear, Jordan, Ogden and Weber feed into the lake. They provide a constant supply of fresh water, and carry with them dissolved and suspended minerals (such as salt), sand, and rock particles. These minerals and sand are deposited in the lake. The only way water leaves the lake is through evaporation.

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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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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. These salty lakes occur in so-called endorheic basins—places where there is no outlet for the water to flow out to sea.

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“Impressive winter precipitation and record-breaking snowpack have undoubtedly improved the situation of Great Salt Lake,” Hasenyager said. “However, it's important to note that it will take much more than one above-average winter to fully replenish the lake's water levels and address our long-term challenges.”

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Set a lake elevation range goal. Invest in conservation. Invest in water monitoring and modeling. Develop a holistic water management plan.

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