Utah Lake

Utah Lake is a shallow freshwater lake in the center of Utah County, Utah, United States. It lies in Utah Valley, surrounded by the Provo-Orem metropolitan area. The lake's only river outlet, the Jordan River, is a tributary of the Great Salt Lake. Evaporation accounts for 42% of the lake's outflow, which leaves the lake slightly saline. The elevation of the lake is at 4,489 feet (1,368 m) above sea level. If the lake's water level rises above that, the pumps and gates on the Jordan River are left open. The first European to see Utah Lake was Father Silvestre Vélez de Escalante in 1776. He stayed with the Timpanogots band of Ute Tribe for three days. Mormon settlers later settled near the lake beginning in 1849, with the Timpanogots becoming mostly displaced from the area by 1872. The native fish species of the lake were overharvested by the settlers and subsequently restocked with non-native species. Although thirteen species of fish were native to the lake, only the Utah sucker and the previously critically endangered, now threatened, June sucker remain. The dominant species in the lake is the common carp, introduced in 1883 as an alternative to the overharvested native fish. The carp is now estimated at 90% of the biomass of the lake and contributes to a decline in native fish populations by severely altering the ecosystem. Pollution has also caused problems with the lake's ecosystem. Raw sewage was dumped into the lake as late as 1967. Pollution problems still remain; the lake's phosphorus and mineral salt levels are in violation of the Clean Water Act. In recent years, the lake has been prone to harmful algal blooms or HABs. Utah Lake is managed cooperatively by the Utah Division of Forestry, Fire & State Lands and the Utah Lake...