Lake Size: 1700 sq.miles
Deepest Depth: 33 ft
Latitude: 41.166667
Longitude: -112.583333
Lake Level Above Sea Level: 4,200 feet (1,283 m)
Counties: Tooele, Salt Lake
Cities: Tooele, Salt Lake
Water Quality: The Great Salt Lake is endorheic (has no outlet besides evaporation) and has very high salinity, far saltier than sea water. The Jordan, Weber, and Bear rivers (the three major tributaries) deposit around 1.1 million tons of minerals in the lake each year

Information: While the lake was well known by local Native Americans, it entered the annals of written history through the records of Silvestre Vélez de Escalante, who learned of its existence from the Timpanogos Utes in 1776. No name was given to it at the time and it was not shown on the map by Bernardo Miera y Pacheco, the cartographer for the expedition. It was first seen by Europeans in 1824, apparently independently, by Jim Bridger and Etienne Provost. Shortly thereafter other trappers saw it and walked around it. Most of the trappers, however, were illiterate and did not record their discoveries. As oral reports of their findings made their way to those who did make records, some errors were made. Escalante had been on the shores of Utah Lake, which he named Laguna Timpanogos. It was the larger of the two lakes that appeared on Miera's map. Other cartographers followed his lead and charted Lake Timpanogos as the largest (or larger) lake in the region. As people came to know of Great Salt Lake, they interpreted the maps to think that "Timpanogos" referred to Great Salt Lake. On some maps the two names were used synonymously. In time "Timpanogos" was dropped from the maps and its original association with Utah Lake was forgotten. In 1843, John C. Fremont led the first scientific expedition to the lake, but with winter coming on, he did not take the time to survey the entire lake. That happened in 1850 under the leadership of Howard Stansbury (Stansbury discovered and named the Stansbury mountain range and Stansbury island). John Fremont's overly glowing reports of the area were published shortly after his expedition. His published report became very popular and his report of the area caught the attention of Brigham Young. When Young determined that his group of Mormons needed to leave Nauvoo, Illinois, he determined to set the area as their destination.