The Great Salt Lake is known for extreme fluctuations in water levels due to seasonal changes and human impacts like water diversion.

The Utah-based Great Salt Lake is well-known for its sharp variations in water level. Seasonal fluctuations in precipitation and evaporation rates, as well as human causes like water diversion for industry and agriculture, all have an impact on these changes. The lake's water levels can fluctuate greatly from year to year, and the situation is made worse by drought and water use. The biodiversity, surrounding ecosystems, and salinity of the lake are all impacted by this unpredictability. For surrounding ecosystems, wildlife, and populations who rely on the Great Salt Lake for resources, the lake's erratic water levels have become a serious problem.