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Great Salt Lake advisers: elevations steady, salt mass shrinking but forecasts vary by climate scenario
Summary
Advisory council staff reported modest recent rises in South- and North-Arm elevations, seasonal discharge variability and a consistent salt export to the North Arm; staff presented scenario-based forecasts that range widely by wet/cool vs. warm/dry conditions and highlighted monitoring gaps.
Advisory committee staff reported updated measurements of water-surface elevation, streamflow and salinity at the Great Salt Lake and outlined seasonal forecasts for 2025.
The Utah Geological Survey presentation said the South Arm gauge daily value was about 41.926 feet on the most recent reading and the North Arm about 41.918 feet, producing a measured head difference of roughly 0.6 foot. Staff noted that while some inflow stations show cumulative streamflow near or below median values for the water year, others—such as a Farmington Bay site—are recording exceptionally high cumulative flows for this time of year.
"We're seeing about a 0.5 foot rise since the seasonal low in November," said Andrew Ropke, summarizing…
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