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Researchers Find Hidden Freshwater Reservoir Beneath Great Salt Lake

3/24/2026

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Summary

Story summary

University of Utah researchers discovered an underground freshwater reservoir beneath the Great Salt Lake using airborne electromagnetic surveys mapping the geology under Farmington Bay.
The freshwater-filled sediments extend 3 to 4 kilometers deep, challenging the idea that freshwater lies only at the lake’s edge.
The team plans to expand surveys to better assess the reservoir’s extent and to support regional water management efforts.

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Story summary

University of Utah researchers discovered an underground freshwater reservoir beneath the Great Salt Lake using airborne electromagnetic surveys mapping the geology under Farmington Bay.
The freshwater-filled sediments extend 3 to 4 kilometers deep, challenging the idea that freshwater lies only at the lake’s edge.
The team plans to expand surveys to better assess the reservoir’s extent and to support regional water management efforts.