Rush Lake (also known as Rush Reservoir) is a shallow saline

lake A lake is often a naturally occurring, relatively large and fixed body of water on or near the Earth's surface. It is localized in a basin or interconnected basins surrounded by dry land. Lakes lie completely on land and are separate from ...

in Tooele County in the

U.S. The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 states and a federal capital district, Washington, D.C. The 48 contiguous ...

state State most commonly refers to: * State (polity), a centralized political organization that regulates law and society within a territory **Sovereign state, a sovereign polity in international law, commonly referred to as a country **Nation state, a ...

Utah Utah is a landlocked state in the Mountain states, Mountain West subregion of the Western United States. It is one of the Four Corners states, sharing a border with Arizona, Colorado, and New Mexico. It also borders Wyoming to the northea ...

. It is a remnant of Lake Bonneville, an ancient postglacial inland sea that covered much of the western United States during the

Ice Ages An ice age is a long period of reduction in the temperature of Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glaciers. Earth's climate alternates between ice ages, and Gre ...

. The lake is a natural impoundment of a stream that drains into the

Great Salt Lake The Great Salt Lake is the largest saltwater lake in the Western Hemisphere and the eighth-largest terminal lake in the world. It lies in the northern part of the U.S. state of Utah and has a substantial impact upon the local climate, partic ...

. Rush Lake varies in size, evaporating at about per year, although occasional floods refill the lake. The average surface elevation is .

Geography

The lake is located in a broad valley named Rush Valley near the town of Stockton and several miles south of Tooele, and is fed by snowmelt from six mountain ranges. These are the Sheeprock Mountains in the south, the East Tintic Mountains to the southeast, the

Oquirrh Mountains The Oquirrh Mountains ( ) is a mountain range that runs north–south for approximately 30 miles (50 km) to form the west side of Utah's Salt Lake Valley, separating it from Tooele Valley. The range runs from northwestern Utah County– ...

to the east, South Mountain to the north, the Stansbury Mountains to the northwest and west, and the Onaqui Mountains to the southwest. The runoff from these mountain regions create only intermittent surface flow to the lake, but does reach it via

groundwater Groundwater is the water present beneath Earth's surface in rock and Pore space in soil, soil pore spaces and in the fractures of stratum, rock formations. About 30 percent of all readily available fresh water in the world is groundwater. A unit ...

seepage. The highest point in the watershed is Lowe Peak, at . The outflow mostly consists of evaporation, and a very small amount seeps through the sandspit that impounds it from the main Great Salt Lake valley. The lake was isolated from Lake Bonneville approximately 15,000-17,000 years ago after evaporation lowered the lake level to below the natural Stockton Bar barrier between Rush Valley and Tooele Valley. During the ice ages, Rush Valley was merely one of many arms of Lake Bonneville. After Bonneville dried up, Rush Valley contained several

pluvial In geology and climatology, a pluvial is either a modern climate characterized by relatively high precipitation or an interval of time of variable length, decades to thousands of years, during which a climate is characterized by relatively high ...

lakes – Shambip, Smelter, and Rush – of which only Rush Lake remains today.

Climate and ecology

Two major vegetation communities inhabit the Rush Lake watershed. These are

sagebrush Sagebrush is the common name of several woody and herbaceous species of plants in the genus ''Artemisia (plant), Artemisia''. The best-known sagebrush is the shrub ''Artemisia tridentata''. Sagebrush is native to the western half of North Amer ...

-grass and pinyon-

juniper Junipers are coniferous trees and shrubs in the genus ''Juniperus'' ( ) of the cypress family Cupressaceae. Depending on the taxonomy, between 50 and 67 species of junipers are widely distributed throughout the Northern Hemisphere as far south ...

. The former is found in lower elevations and the valley floor, and the latter is found at higher elevations on the mountains along with other forms of alpine vegetation. The average annual precipitation is , and the annual

frost Frost is a thin layer of ice on a solid surface, which forms from water vapor that deposits onto a freezing surface. Frost forms when the air contains more water vapor than it can normally hold at a specific temperature. The process is simila ...

-free season surrounding the lake ranges from 100 to 140 days.

Cattle Cattle (''Bos taurus'') are large, domesticated, bovid ungulates widely kept as livestock. They are prominent modern members of the subfamily Bovinae and the most widespread species of the genus '' Bos''. Mature female cattle are calle ...

and

sheep Sheep (: sheep) or domestic sheep (''Ovis aries'') are a domesticated, ruminant mammal typically kept as livestock. Although the term ''sheep'' can apply to other species in the genus '' Ovis'', in everyday usage it almost always refers to d ...

rangelands take up most of the catchment area. The lake is inhabited by several different species of fish. These include, in order of abundance,

Utah chub The Utah chub (''Gila atraria'') is a freshwater fish of the family Leuciscidae native to the western United States, where it is abundant in the upper Snake River basin and the Bonneville basin. The species name ''atraria'' references the lat ...

carp The term carp (: carp) is a generic common name for numerous species of freshwater fish from the family (biology), family Cyprinidae, a very large clade of ray-finned fish mostly native to Eurasia. While carp are prized game fish, quarries and a ...

green sunfish The green sunfish (''Lepomis cyanellus'') is a species of aggressive freshwater fish in the sunfish family ( Centrarchidae) of order Centrarchiformes. The green sunfish does not always grow large enough to be an appealing target for anglers, ...

bluegill The bluegill (''Lepomis macrochirus''), sometimes referred to as "bream", "brim", "sunny", or, in Texas, "copper nose", is a species of North American freshwater fish, native to and commonly found in streams, rivers, lakes, ponds and wetlands ea ...

largemouth bass The largemouth bass (''Micropterus nigricans'') is a carnivorous, freshwater fish, freshwater, ray-finned fish in the Centrarchidae (sunfish) family, native to the eastern United States, eastern and central United States, southeastern Canada an ...

channel catfish The channel catfish (''Ictalurus punctatus''), known informally as the "channel cat", is a species of catfish native to North America. They are North America's most abundant catfish species, and the official state fish of Kansas, Missouri, Nebra ...

yellow perch The yellow perch (''Perca flavescens''), commonly referred to as perch, striped perch, American perch or preacher is a freshwater perciform fish native to much of North America. The yellow perch was described in 1814 by Samuel Latham Mitchill fr ...

black crappie The black crappie (''Pomoxis nigromaculatus'') is a freshwater fish in the sunfish family ( Centrarchidae). It is endemic to North America, one of the two types of crappies. It is very similar to the white crappie (''P. annularis'') in size, s ...

, and black bullhead. The lake has not been stocked with fish since 1988, when 71,000 largemouth bass fry were released in the lake.

References

External links

*
The Rush Lake Legend

Kiteboarding on Rush Lake in 2011
{{authority control Lakes of Utah Regions of Utah Saline lakes of the United States Lakes of the Great Basin Lakes of Tooele County, Utah