Why Utah's Great Salt Lake is Dying

It's been called America's Dead Sea, Utah's Great Salt Lake. It's not entirely dead, but it is dying. In February of 2023, a woman stood at the edge of the Great Salt Lake and did what she had done for 30 years. She looked out at the water. Her name is Linda Freitas. She's the executive director of Friends of Great Salt Lake, and she has spent her adult life watching this place. But that morning, she wasn't standing at the water's edge. She was standing on the bottom. The water had pulled back weeks earlier. What she fell under her boots was dry, cracked salt, a landscape that looked like the surface of the moon. And she said something in an interview afterward that I haven't been able to shake. I've watched this lake breathe for decades, and now it's barely breathing at all. That's where we start. The Great Salt Lake is the largest saltwater lake in the Western Hemisphere. At its peak in 1987, it stretched across more than 3,300 square miles, larger than the state of Delaware. Today, less than a third of that remains. But this isn't just a story about a disappearing lake. This is a story about a metro area of 2.8 million people slowly pulling the foundation out from under itself. About farmers protecting their livelihoods while quietly destroying them. About politicians who keep building, keep growing, keep approving, while the water vanishes. And about what happens when the bill finally comes due. To understand why the Great Salt Lake is dying, you first need to understand how extraordinary it is that it ever existed at all. 17,000 years ago, there was an inland sea here. It was called Lake Bonneville. Nearly 20,000 square miles of surface area, over 900 feet deep. Roughly the size of modern day Lake Michigan. Not a lake, a sea. A landlocked body of water the size of a small ocean, sitting in the middle of a continent. As the last ice age ended and temperatures climbed, it shrank. Over thousands of years, slowly, it retreated and left behind a series of smaller successor lakes. Sevier Lake, Utah Lake, and the largest of them, the Great Salt Lake. And right there, nestled between the Wasatch Mountains to the east and the driest deserts North America on every other side, something unlikely happened. An oasis formed. Draw a line east from the California coast. You cross the Sierra Nevada, drop into the Great Basin of Nevada, one of the most arid and inhospitable stretches of land on the continent. And then, hundreds of miles from anything green, you hit it. A hundred mile wide corridor of fertile land, fed by snowmelt from towering mountains, flanked by desert in every direction. The Wasatch Front. This is where 2.8 million people live. This is where Salt Lake City is. This is the heart of Utah. The most densely populated, most economically productive, most alive part of the state. And all of it, every single bit of it, exists because of the water that rolls off those mountains every spring, feeds three rivers, and eventually flows into the Great Salt Lake. The lake isn't a side effect of the system. It is the system. Chapter 2. The Disappearing Let's stay with the numbers for a moment, because they're hard to absorb. The Great Salt Lake naturally receives about 3.1 million acre-feet of water per year from the rivers that feed it. Another 600,000 from direct precipitation. It loses roughly 2.6 million acre-feet per year to evaporation. That leaves, in theory, about 1.1 million acre-feet available for human use. The maximum the system can sustain without the lake declining. Humans are currently consuming 2.3 million acre-feet per year. Every year. For decades. The result is an annual water deficit of 1.2 million acre-feet. Year after year after year. You can see it in the exposed shorelines, in the square miles of white salt flats now open to the wind. In Lynne de Freitas, standing on the floor of a lake that should have been 30 feet above her head. But here's the part that genuinely knocked me sideways when I first read it. The thing that almost nobody talks about when they discuss this crisis. Cities and industry across the Wasatch Front use just 9% of the water. 9%. Every person, every faucet, every factory combined. 74% goes to agriculture. And of that 74%, two-thirds is dedicated entirely to one crop. Alfalfa. Alfalfa is a grass. You can eat it, but most people know it as animal feed. It thrives in Utah because it can be harvested multiple times a year and tolerates dry mountain valleys reasonably well. It is also extraordinarily thirsty. Utah grows alfalfa at a scale so massive that the crop alone accounts for roughly half of all water consumption in the Great Salt Lake Basin. The alfalfa industry represents less than 1% of Utah's total GDP. Less than 1%. The state is allowing its greatest natural resource, the economic and ecological engine of the entire region, to evaporate. Literally. To grow a grass that barely registers in the state's economy. And Utah's Republican-dominated state government, which has watched this happen for decades, it has passed no binding restrictions on agricultural water use. Because alfalfa farmers live in rural Utah, they vote. They're the backbone of the state's dairy and beef industries. And roughly a third of Utah state legislature members have documented ties to the real estate sector. The same sector that profits from continued growth, continued development, and continued demand for water that the system cannot sustain. This isn't negligence. This is a choice made deliberately every legislative session for years. Chapter 3. If It Happened Tomorrow Picture a Monday morning in Salt Lake City. You open the curtains. The sky is yellow. Not the familiar grey of smog. Not the orange haze you'd expect from wildfire smoke. This is different. It sits low over the city, like something that doesn't belong. Your throat tightens the moment you crack the front door. Your neighbour is standing on her porch with her hand over her mouth. Schools are closed. The Great Salt Lake is gone. What's left behind, decades of sediment layered with industrial runoff, agricultural chemicals, coal combustion residue, and heavy metals that have been accumulating on that lake bed for over a century, is now exposed and dry and moving with the wind. Arsenic. Lead. Mercury. Copper. Antimony. Particles so fine they pass straight through your nose and embed themselves in your lungs. This is not speculation. This is what's already happening 560 miles to the southwest, at the Salton Sea in Southern California. A shrinking saltwater lake that's only about one-tenth the size of the Great Salt Lake and sits beside a relatively rural population of around 650,000 people. There, childhood asthma rates have already risen to more than three times the California statewide average. The regional real estate market has absorbed an estimated $7 billion in losses from the worsening air quality and dust storms. Scale that up. A lake ten times larger. A population four times the size. Scientists have described the potential collapse of the Great Salt Lake as a ticking environmental nuclear bomb. Some researchers believe it would be the greatest ecological disaster the United States experiences in the entire 21st century. And the exposure has already begun. Chapter 4. The Quiet Damage. Ask any long-time ski patroller on the Wasatch Slopes what's changed over the past decade, and you'll get a version of the same answer. The season opens later and closes earlier. Not every year. Not dramatically in any single winter. But over time, the window is shrinking. This isn't a coincidence. In 2022, the year the Great Salt Lake hit its all-time low water level, the ski season across the Wasatch region was two full weeks shorter than it otherwise would have been. Two weeks. For an industry worth $2 billion a year that directly supports nearly 26,000 jobs, that isn't noise. That's a structural problem with a very specific cause. Here's the mechanism. The Great Salt Lake acts as a thermal buffer. In winter, the lake is relatively warm compared to the cold air moving over it. That air absorbs the lake's heat and moisture, rises, cools, and dumps snow on the Wasatch Mountains. Every resort owner in Utah understands this. They call it the lake effect. And they have been quietly counting on it for decades. When the lake shrinks, the effect weakens. When the lake disappears, the effect is gone. Permanently. A 2025 study from the Environmental Law Institute estimated that the complete loss of the Great Salt Lake would reduce average annual snowpack in the Wasatch Mountains by between 5.1 and 8.4 percent. For the ski industry, that's potentially catastrophic. Nobody in Utah's government wants to say this out loud, but the 2034 Winter Olympics are scheduled to take place in Salt Lake City. The lake that helps keep those mountains covered in snow is drying up in real time. And before you think this is a worst case scenario that's never actually played out, it already has. 50 years ago. 400 miles from here. 15 times smaller. And the aftermath is still being managed today. Chapter 5. Owens Lake, The Preview In the early 1900s, Los Angeles was growing fast and running out of water. So the city's water department bought up land along the Owens River in eastern California and built an aqueduct, 233 miles of concrete and pipe, to redirect that river straight into the The Owens River was the sole source of water for a 108 square mile lake called Owens Lake. By 1926, Owens Lake was gone. Since then, the dried up lake bed has been, for stretches, the single largest source of fine particle air pollution in the entire United States. Not from a factory. Not from a refinery. From a lake that used to exist. Entire towns that once surrounded the water declined and hollowed out as the air turned thick with dust. The all-time record for single source particle pollution in American history, Owens Lake, holds it. Residents eventually sued Los Angeles. The city was ordered to fix what it had broken. They have spent more than $2.5 billion so far trying. Covering the lake bed with gravel, running thousands of sprinklers to weigh the dust down, employing dozens of full-time workers year-round just to manage a lake that hasn't existed for a century. Owens Lake is one-fifteenth the size of the Great Salt Lake. Sit with that for a second. Chapter 6. The Biology of a Dying Lake Beneath the surface of the Great Salt Lake lives something small that feeds the world. Artemia franciscana. Brine shrimp. Barely an inch long. They feed on algae, and they form the base of a food chain that supports more than 10 million migratory birds per year. Hundreds of species, traveling the Pacific Flyway from Alaska to South America. The Great Salt Lake is their refueling stop. Their rest point. Their irreplaceable link in migration route that has existed for thousands of years. If the lake disappears, those birds reroute. Some species adapt. The ecosystem that evolved around this specific stop fractures, slowly and quietly. But here is the part of this story that almost never makes it into the coverage. The Great Salt Lake currently supplies roughly 40% of the entire global market for brine shrimp. That harvest doesn't feed people directly, it feeds the fish that feed people. Brine shrimp are the primary feed source for aquaculture operations across Asia, Africa and Europe. Fish farms raising tilapia, sea bass and shrimp for consumers who have never heard of Utah and couldn't place Salt Lake City on a map. There are fish farmers in Vietnam and fish farmers in Norway whose operations depend, indirectly, on a lake in the Utah desert continuing to exist. When the lake disappears, that supply doesn't get replaced. The alternative sources are smaller, more expensive and less reliable. The disruption moves silently through supply chains until it shows up as a price spike in a supermarket aisle somewhere far from the Wasatch Front. Over $67 million in annual economic output from Utah alone, more than 500 direct jobs, and a global ripple that nobody is accounting for. Chapter 7. The Politics of Water There's a pattern that shows up consistently in western water politics. The people who consume the most water are the least likely to bear the cost of its absence. That sounds like a moral judgement, but it's also just math. In Utah, farmers consume 74% of the water. Cities absorb the consequences, worsening air quality, shorter ski seasons, declining property values, reduced snowpack, crippled industry. And the farmers, who hold water rights established under 19th century legal frameworks, are under no binding obligation to change anything. Western water law runs on prior appropriation, first in time, first in right. Whoever claimed the water first owns it. It's a system designed for a Utah of 500,000 people, not one approaching 4 million. Utah's legislature has taken small steps. There are voluntary buyback programs that compensate farmers who choose to return water to the lake. In 2023, legislation was passed establishing minimum water level targets for the Great Salt Lake. A genuine first. But enforcement is weak. Nothing is urgent. And the state's official projections still anticipate adding 600,000 more residents to the Wasatch Front in the coming decades. More people. Less water. More construction. Less lake. Someone will pay the bill. It just won't be the people who wrote it. Chapter 8. The Two Winters In the winter of 2022-2023, something unexpected happened. Almost immediately after the Brigham Young University team published their report, the one warning that the lake could be completely gone within five years, the Wasatch Front was hit with the highest snowfall totals in 30 years. The highest since the winter of 1992-1993. The lake partially recovered from its record low. Water returned to shorelines that had been dry for years. And that recovery was almost immediately used as evidence that the problem wasn't as serious as scientists claimed. The problem with that reasoning is straightforward. The recovery had nothing to do with human intervention. No conservation effort. No policy change. No sacrifice from the agricultural sector. Pure climatic luck. An anomalous winter that happened to arrive at exactly the right moment. The winters that followed were dramatically worse. The 2024-2025 snow season was the second lowest snowfall total ever recorded in the region, one of the six worst since reliable records began in 1884. The lake is contracting again. The lesson of 2023 went unlearned. The temporary reprieve was absorbed as reassurance. And now the situation has returned to almost exactly where it was before the snow arrived. The record snowfall didn't save the Great Salt Lake. It just delayed the conversation. There's a name I keep coming back to. Salt Lake City. The city was named after the lake beside it in 1847, when the first pioneers arrived and built their settlement on its edge. They named it that because the lake was central to everything. The landscape. The climate. The basic possibility of living here at all. If the lake disappears, the name stays. Salt Lake City. A name pointing at something that no longer exists. A memorial to a decision that was deferred, season after season, legislative session after legislative session, until it was too late to make a different one. There are moments in history when communities know exactly what they're doing wrong and do it anyway. Sometimes out of greed. Sometimes out of political fear. Sometimes simply because change is painful and inertia is comfortable. The Great Salt Lake hasn't disappeared quietly. It's disappeared loudly. With published research. With documented measurements. With scientists standing at microphones year after year, describing exactly what is happening and exactly what it will cost. The only thing missing was the will to stop. That might be the most unsettling part of this story. Not that we didn't know, but that we did.