For many years, scientists have warned that the Great Salt Lake in Utah is headed toward a catastrophic decline. While the size of the Great Salt Lake fluctuates naturally with seasonal and long-term weather patterns, the lake has been experiencing significant and steady declines for decades. In fact, the Great Salt Lake has lost more than 15 billion cubic yards of water over the past three decades, and it’s getting shallower at the rate of four inches a year.
This reduction is primarily due to excessive water diversions from rivers and streams that feed into the lake for agricultural, industrial, and municipal use. These diversions, combined with prolonged drought and rising temperatures due to climate change, have significantly reduced the lake’s water level.
According to a new study led by researchers from Oregon State University, 62% of the river water bound for the Great Salt Lake is diverted for human use, with agricultural activities responsible for nearly three-quarters of that percentage. The analysis, which was recently published in the journal Environmental Challenges, found that reducing irrigation is necessary to save the lake.
In order to stabilize and begin refilling the lake, the research team proposes cutting human water consumption in the Great Salt Lake’s watershed by 35%. The researchers emphasize that farmers and ranchers facing income losses from using less water would require taxpayer-funded compensation.
The Great Salt Lake is a biodiversity hotspot, sustaining more than 10 million migratory birds. The lake also directly supports 9,000 jobs and fuels $2.5 billion in economic activity annually.
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Reducing irrigation for livestock feed crops is needed to save Great Salt Lake, study argues
Photo, posted January 14, 2024, courtesy of Olaf Zerbock via Flickr.
Earth Wise is a production of WAMC Northeast Public Radio
