As saline lakes worldwide face mounting pressures from climate change, water diversion, and land-use shifts, March 2026 has brought a wave of significant developments centered on the Great Salt Lake (Utah, USA)—along with new global research that places these challenges in a broader context.
Utah’s High-Stakes Voluntary Rescue Plan
The Great Salt Lake, already reeling from a historic low in 2022 and a poor 2025–2026 snowpack, is again approaching critically low elevations. The receding shoreline now exposes hundreds of square miles of arsenic-laden lakebed, creating a toxic dust hazard for over 2.5 million downwind residents.
In response, Utah has doubled down on an unprecedented voluntary, market-based strategy. Rather than imposing mandatory water cuts, the state is paying farmers to lease their water rights and redirect flows to the lake. During the 2026 legislative session, lawmakers approved nearly $100 million in new funding for lake restoration, adding to an existing $40 million water trust and over $1 billion in prior conservation commitments.
However, researchers and advocates warn that the lake still requires an estimated 800,000 additional acre-feet of water per year to reach recovery targets by 2034. Many farmers remain hesitant to lease their water rights, fearing they may not regain them. If voluntary measures fall short, legal actions under the Endangered Species Act or state-led mandates could follow (1, 2).
Surprise Discovery: A Vast Freshwater Reservoir Beneath the Lake
In a remarkable scientific finding this month, researchers from the University of Utah revealed the existence of a massive reservoir of fresh water hidden deep beneath the Great Salt Lake. Using a helicopter-borne electromagnetic sensor, the team detected freshwater-saturated sediments and bedrock extending 3 to 4 kilometers (about 2.5 miles) below the lakebed (3).
Global Saline Lake Research Highlights
March 2026 also saw new scientific presentations that will be presented at the EGU General Assembly:
Tibetan Plateau: A study on saline lakes Selin Co and Nam Co found that high salinity alters under-ice temperature and oxygen dynamics, creating unusual warm stratification that influences biological productivity and oxygen depletion (4).
Global trends: A comprehensive assessment of over 24 000 saline lakes (1985–2021) reported that approximately 15% have shrunk (primarily in arid regions), while 31% have expanded, largely due to accelerated snow and glacier melt driven by global warming (5).
2. https://www.ksl.com/article/51463820/2026-session-was-good-for-great-salt-lake-but-it-could-have-been-great-group-says
3. https://www.scientificamerican.com/article/utahs-great-salt-lake-may-be-hiding-a-massive-reservoir-of-fresh-water/
4. Kai, J., Wang, J., Ju, J., Wang, H., and Zhu, L.: Under-ice Thermal and Oxygen Dynamics in Saline Lakes from the Tibetan Plateau, EGU General Assembly 2026, Vienna, Austria, 3–8 May 2026, EGU26-15619, https://doi.org/10.5194/egusphere-egu26-15619
5. Kumaraswamy, I., Aminzadeh, M., and Shokri, N.: A global assessment of saline lake dynamics from 1985 to 2021, EGU General Assembly 2026, Vienna, Austria, 3–8 May 2026, EGU26-6863, https://doi.org/10.5194/egusphere-egu26-6863