Great Salt Lake

Sept. 1, 2025

As the Great Salt Lake shrinks, scientists are uncovering mysterious groundwater-fed oases hidden beneath its drying lakebed.

About Great Salt Lake:

  • It is a saline lake located in northern Utah, United States.
  • It is the largest inland body of salt water in the Western Hemisphere and one of the most saline inland bodies of water in the world.
  • The lake is fed by the Bear, Weber, and Jordan rivers and has no outlet.
  • The lake has fluctuated greatly in size, depending on the rates of evaporation and the flow of the rivers that feed it.
  • Its surface area has varied from about 6,200 sq.km. at its highest levels in 1873 and the mid-1980s to about 2,300 sq.km. at its lowest level in 2022.
  • It has a length of 120 km and a maximum width of 45 km.
  • The lake reaches an average depth of 4.9 m and a maximum depth of 10 m.
  • Like the Dead Sea, the Great Salt Lake exists within an arid environment and has chemical characteristics similar to that of the oceans.
  • It has a much greater salinity than the oceans, however, since natural evaporation exceeds the supply of water from the rivers feeding the lake.
  • Surrounded by great stretches of sand, salt land, and marsh, the Great Salt Lake remains eerily isolated from the nearby cities, towns, and other human habitations.
  • The salts are primarily sodium chloride, but there are also sulfates, magnesium, and potassium.

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