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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The low lake level and increasing salinity threaten to disrupt economic mainstays like agriculture, tourism, mineral extraction and brine shrimp harvesting. Exposed sediments can also reduce air quality and so threaten public health.
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.
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!
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.
To augment the declining Great Salt Lake , a pipeline has been proposed to pump seawater from the Pacific Ocean. As extreme as it sounds, the idea is still being considered almost a year after it was first raised.
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.
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.
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.
The state of Utah owns basically most of the Great Salt Lake, including Antelope Island, Fremont Island, Gunnison Island, the Ogden and Farmington bay wetland areas, along with the entire lakebed.
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.
“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.”
“We're not going to be bailed out by excess snow,” Baxter said. “We're hitting these pressures of climate change now. Mother Nature is not likely to cooperate with five landmark years, so to expect this to happen five years in a row, that's not going to happen.”
A) The Great Salt Lake is so salty that the only living things in the lake are algae, bacteria, brine shrimp and brine flies. B) Algae is a very small plant and that is the diet of the brine shrimp and brine fly.
Currently, about 40 percent of the river water is diverted and used for farming, industry and other forms of human consumption. According to Wurtsbaugh, human water use has lowered the lake level 11 feet (3.3 meters) in the last 10 years.
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.
In the 1950s, the bridge was rebuilt with rock, creating a causeway that severs the lake's North Arm from its major sources of fresh water. As a result, the North Arm has grown increasingly salty and hostile to most life, except for microorganisms like halobacteria and red algae that thrive there and give it its color.