Salt Lake City Faces Toxic Dust Storms Amid Declining Water Levels

Salt Lake City, Utah, was already in trouble. Between vast open-pit mining operations in the surrounding areas, oil refineries, and a unique mountain range that traps pollution in a winter ‘inversion layer,’ the cities surrounding the Great Salt Lake have grappled with air quality issues for years.

“We have 2.5 million residents along the edges of the lake,” said Kevin Perry, a University of Utah atmospheric scientist researching the Great Salt Lake dust. “These dust plumes come off and make the air unhealthy regardless of what’s in it.”

Now, as NBC News reports, declining water levels in the Great Salt Lake have created new challenges as dust laden with toxic metals threaten the region.

Since Mormon pioneers settled the valley in the mid-1800s, the lake’s volume is down 67% – thanks to a combination of irrigation projects, which account for roughly 75% of the loss, and the ongoing megadrought, which accounts for the remainder of the drop, according to research from Utah State University.

This isn’t an issue caused by climate change, according to the report. Residents are simply consuming too much water for agriculture, residential use and industry, from overtaxed rivers that feed the terminal lake. Humans diverting water has reduced the Great Salt Lake by around 11 feet – while increased evaporation has added to the problem by around half-a-foot.

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