The Great Salt Lake is disappearing

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Pigeon
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The Great Salt Lake is disappearing

Post by Pigeon » Sun Feb 05, 2023 9:24 pm

Emblematic of the West’s Great Basin, the Great Salt Lake has no outlet. The lake can only hold its own against evaporation if sufficient water arrives from three river systems fed by mountain snowmelt. When inflow decreases, the lake recedes. 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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Because Utah manages its own water, it is finally up to the state Legislature to save the lake. We can’t legislate weather or climate. But we can pass mandates and incentives to reduce water use, especially by agriculture, which accounts for two-thirds of diversions in the Great Salt Lake watershed.

Nearly 70% of water used by Utah farmers goes to raising alfalfa hay — a water-intensive crop that adds just 0.2% to the state’s gross domestic product. Nearly all that water is unmetered; farmers have no financial incentive to conserve. As for household consumption, Utahns use the most domestic water per capita in the Southwest and pay the least for their water of any state.

Some legislators dream of fixes that won’t involve cutbacks: tree-thinning in mountain forest that might increase runoff, cloud-seeding, pipelines. None of these will suffice, according to water experts.

Significant legislation and creative funding ideas are coming from both Democrats and Republicans. One proposal would divert sales tax money to compensate ranchers and farmers who let fields go fallow. A proposed Great Salt Lake Authority would centralize management. Grants for high-tech “agriculture optimization” could decrease farmers’ water use by 30%. Modernizing water rights law could keep water in streams and deliver more inflow to the lake.

The Utah Legislature began its 2023 session on Jan. 17. Its members have 45 days until the end of the session on March 3 to take action to save the Great Salt Lake from collapse. Scientists say waiting another year will be too late for the lake to recover. Brigham Young University ecologist Ben Abbott, lead author of the scientists’ call to arms, sums up the challenge: “We’ve got to act now. Unlike politicians, hydrology doesn’t negotiate.”

Record snowfall blanketed the Wasatch Mountains above Salt Lake City this winter. But a single year’s anomalous change in weather can’t alter one stark fact: Utah is — and will remain — the second-driest state in the nation.

Utah must come to grips with its arid heart.

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