Utah Lake and Utah Valley
|Location||Utah County, Utah,
|Type||slightly saline Eutrophic|
|Primary inflows||Provo and Spanish Fork River|
|Primary outflows||Jordan River and evaporation|
|Catchment area||3,846 sq mi (9,960 km2)|
|Basin countries||United States|
|Managing agency||State of Utah|
|Max. length||24 mi (39 km)|
|Max. width||13 mi (21 km)|
|Surface area||95,000 acres (380 km2)|
|Average depth||10.5 ft (3.2 m)|
|Max. depth||14 ft (4.3 m)|
|Water volume||870,000 acre·ft (1.07×109 m3)|
|Surface elevation||4,489 ft (1,368 m) (compromise)|
|Settlements||Provo-Orem metropolitan area|
Utah Lake is a freshwater lake in the U.S. state of Utah. 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 outflow of the lake, which leaves the lake slightly saline. The elevation of the lake is legally at 4,489 feet (1,368 m) above sea level. If the lake elevation goes any higher, 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. The Timpanogots were later moved out or integrated with the Mormon settlers between the 1850s and 1870s. The fish of the lake were overharvested by the settlers and restocked with non-native species.
Although thirteen species of fish are native to the lake, only the Utah sucker and the critically endangered June sucker remain. The dominant species in the lake is the common carp, introduced in 1883 as an alternative to the over harvested native fish. The carp is now estimated at 90% of the biomass of the lake and is contributing 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.
Utah Lake is within Utah Valley, in north-central Utah. Mountains surround Utah Valley on three sides: The Wasatch Range to the east, Traverse Mountains to the north, and Lake Mountain to the west. Mount Nebo reaches an altitude of 11,863-foot (3,616 m), and Mount Timpanogos reaches an altitude of 11,745-foot (3,580 m), nearly 7,250 feet (2,210 m) above the valley floor. Jutting into the south portion of the lake is 6,805-foot (2,074 m) West Mountain, which divides Goshen Bay and Lincoln Beach. Utah Lake is situated on the western edge of the valley and covers more than 25% of Utah Valley's floor. Because of its location on the western side of the valley, the eastern shore has a gentle slope and the western shore rises abruptly against Lake Mountain. Connected to the main body of the lake are two large, shallow bays: the aforementioned Goshen Bay (north Goshen Valley), to the south and Provo Bay to the east. Major cities such as Provo and Orem are located between the lake's eastern shore and the Wasatch Mountains.
Utah Lake is a remnant of a much larger pleistocene lake called Lake Bonneville, which existed from 75,000 to 8,000 years ago. At its peak 30,000 years ago, Lake Bonneville reached an elevation of 5,090 feet (1,550 m) above sea level and had a surface area of 19,800 square miles (51,000 km2), which was nearly as large as Lake Michigan. The weight of the lake depressed sections of the lake bottom by as much as 240 feet (73 m) before the surface rebounded when the lake dried up. About 12,000 years ago, the climate of the region became warmer and drier. As evaporation rates exceeded inflow rates, the lake began to dry up, leaving Utah Lake, the Great Salt Lake, Sevier Lake, and Rush Lake as remnants.
Over the roughly 65,000 years that Lake Bonneville existed, sediments built up, creating a lacustrine plain over Utah Valley. As a result, the valley floor and lake bed are relatively flat, which causes the lake to be shallow. The lake has a maximum depth of just under 14 feet (4.3 m) and an average depth of about 10.5 feet (3.2 m). This shallowness allows winds to easily stir up sediments from the lake's bottom, contributing to the turbidity or the impression of pollution seen in Utah Lake's water.
Three faults run under Utah Lake. One of the faults, the Bird Island fault, runs under the eastern edge of the lake and helps give rise to hot springs near Lincoln Beach. The other major hot spring is on the northern shore and is called Saratoga Springs. The hot springs mostly result from the development of hydraulic pressure as the ground water slopes toward the middle of the lake.
The lake contains a small island called Bird Island, about 2.25 miles (3.62 km) north of the Lincoln Beach boat ramp, near its south end. The island has a few trees and is somewhat visible from Lincoln Beach. During high-water years, the island may be completely submerged, the trees being the only indication it is there. It is a fairly popular destination among fishermen seeking walleye, white bass, and channel catfish.
The Utah Lake watershed drains 3,846 square miles (9,960 km2) over mostly mountainous terrain. The watershed's highest point is at 11,765-foot (3,586 m) Bald Mountain in the Uinta Mountains. 782,335 acres (3,166 km2) (32%) are managed by the United States Forest Service, 249,329 acres (1,009 km2) (11%) are managed by other government entities, and the majority of the rest, 1,263,696 acres (5,114 km2) (51%), are privately owned.
Two major tributaries account for nearly 60% of inflow by streams or rivers into Utah Lake. The Provo River accounts for 36% of the inflow, and the Spanish Fork River accounts for 24%. Other tributaries include the American Fork River, Current Creek, Dry Creek, Hobble Creek, and Mill Race Creek. Additionally, there are many hot springs and smaller creeks flowing into the lake. Utah Lake is drained by the Jordan River, which begins at the lake's north end. The river flows north through Utah, Salt Lake, and Davis counties and then into the southeast portion of the Great Salt Lake. Given the lake’s semi-arid climate, large surface area, and shallow average depth, evaporation accounts for 42% of Utah Lake's outflow.
After several years of drought, irrigation companies were arguing over their share of Utah Lake's water from the Jordan River. Judge Morse of the Third District Court issued his judgment that became known as the Morse Decree of 1901. The decree stated that the irrigation companies "are entitled to a decree awarding to them, subject to the limitations hereinafter set forth, the right to the use of all the balance of the waters of the Jordan River, for municipal, irrigation, culinary, and domestic purposes, to the extent of the capacity of their several canals, and the right to impound and store all of the waters of said river in Utah Lake." In response to the drought, a pumping plant was installed at the outlet of the Jordan River from Utah Lake. It was the largest pumping plant in the United States at the time. The plant contained seven pumps with a total capacity of 700 cubic feet (20 m3) per second. After the decree was released, Utah Lake essentially became an irrigation reservoir and the Jordan River's flow was highly regulated.
As a result of the 1983-1984 flooding, a lawsuit was filed for compensation due to flooding based upon breach of contract of the previous compromise level. In 1985, a new compromise level was reached which governed the maximum level of the lake. The new level was chosen to be 4,489 feet (1,368 m) above sea level. When the water level in Utah Lake exceeds this level, the Jordan River pumps and gates are left open. The new compromise level also meant that the lake's elevation was below Jordan River's stream bed.
In 1948, a study showed Utah Lake was being seriously polluted. As a result, Utah County cities decided to plan how and where to build sewage treatment plants instead of dumping raw sewage into the lake. By 1954, many cities had constructed sewage treatment plants, but Provo's was still under construction. Raw sewage was still getting into the lake by 1967.
In the State of Utah, the Utah Division of Water Quality and Utah Division of Drinking Water are responsible for the management and regulation of water quality. Lakes, rivers, and streams that exceed the standard levels are then placed on the DEQ 303d list in accordance with the Clean Water Act. The Act requires states to identify impaired water bodies every two years and develop a total maximum daily load (TMDL) for pollutants that a body of water can assimilate without causing the water body to exceed the water quality standards. Utah Lake was originally put on Utah's 2000 and 2004 303d list for phosphorus and total dissolved solids (TDS) exceeding recommend values. High levels of phosphorus can cause high levels of nuisance algae growth, low dissolved oxygen, and elevated pH levels. TDS tells about the concentration of mineral salts in the water, which can cause problems to agriculture and culinary water supplies.
Krissy Wilson of Utah's Division of Wildlife Resources, stated in 2010 that water quality is now improving, with greater flows of water, among other things, contributing to the improvement. However, the presence and activity of carp, which stir up solids in the water, makes it difficult to appreciate the improvement without conducting scientific measurements.
The first inhabitants of the area were nomadic hunter-gatherers of the Desert Archaic Culture. An archeology site, called the Soo'nkahni Village, has been explored next to the Jordan River in Draper. The site dates back 3,000 years and over 30,000 artifacts have been found. The next recorded inhabitants were the Fremont people who lived in the Utah Lake area from about 400 A.D. to about 1350 A.D. They consisted of small villages of hunters and farmers. They farmed corn, squash, and beans. When climatic conditions changed, they caused trouble for farming. Also, the ancestors to the Ute, Paiute, and Northwestern Shoshone moved into the area. As a result, the Fremont people left the area.
The third group to inhabit the area were the Utes of central Utah and eastern Colorado. The Timpanogot (also called Timpanogos, Timpanogotzi, Timpannah, and Tempenny) band of the Utes inhabited Utah Valley. They were the most dominant band of Utes due to the relative ease in which to gather the plentiful food supply. During spring spawning season, groups of Utes from all over the region gathered at Utah Lake to gather fish. While population numbers are unknown, camps were scattered throughout the valley. In 1826, Jedediah Smith visited a camp along the Spanish Fork river that had 35 lodges with about 175 people.
Franciscan missionary Silvestre Vélez de Escalante, while on his expedition in late summer and early autumn of 1776, was trying to find a land route from Santa Fe, New Mexico to Monterey, California. Two Timpanogots from Utah Valley acted as guides for his party. On September 23, 1776, the party traveled down Spanish Fork Canyon and entered the Utah Valley. From Escalante's journal, he describes Utah Lake: "The lake, which must be six leagues wide and fifteen leagues long, extends as far as one of these valleys. It runs northwest through a narrow passage, and according to what they told us, it communicates with others much larger. This lake of Timpanogotzis abounds in several kinds of good fish, geese, beaver, and other amphibious animals which did not have an opportunity to see. Round about it are these Indians, who live on the abundant fish of the lake, for which reason the Yutas Sabuaganas call them Come Pescados [FishEaters]. Besides this, they gather in the plain grass seeds from which they make atole, which they supplement by hunting hares, rabbits, and fowl of which there is great abundance here." Escalante named the lake Lake Timpanogos, after the tribe living in the area. Escalante's record clearly distinguishes between this Lake Timpanogos, a body of fresh water that he saw and sized, and Great Salt Lake, which he did not see or name, but was described to him as a river "communicates with others much larger." The next recorded European visitor was Étienne Provost, a French-Canadian trapper who visited Utah Lake in October 1824. The city of Provo and the Provo River are named after him.
Early Mormon settlement
The Mormon settlement of Utah began in July 1847, when pioneers entered the Salt Lake Valley. Under the direction of Parley P. Pratt, an exploration of Utah Valley was conducted. The party brought a small boat in which they explored Utah Lake and caught fish with their nets. The first battle between settlers and Indians occurred in early March 1849. A company of forty men was sent into Utah Valley to stop the stealing of cattle from the Salt Lake Valley. The company met in the village of Little Chief, who told them where the people responsible for the stealing were located. A skirmish took place in which four Timpanogots were killed. The settlers named the site of the skirmish Battle Creek, which was later renamed Pleasant Grove.
In April 1849, a group of about thirty families came into Utah Valley and settled on the Provo River, very close to the main Timpanogot village on the Provo River. The settlers built a stockade called Fort Utah and armed it with a twelve-pound cannon to intimidate the Timpanogots. In August, a Timpanogot named Old Bishop was murdered by three settlers over a shirt they wanted from him. Some Timpanogots shot at cattle or stole corn in response. Winter was especially hard and Timpanogots stole cattle for food. By January 1850, settlers of Fort Utah reported to officials in Salt Lake City that the situation was getting dangerous. They wanted a military party to attack the Timpanogots. A militia was sent from Salt Lake City and on February 8 and 11, and they engaged the Timpanogots in battle. On February 14, eleven Timpanogots surrendered, but were later executed while their families watched. A government surgeon went to the execution site and cut off the Timpanogots' heads for later examination. One militia man and 102 Timpanogots were killed. Over the ensuing years, fewer and fewer Timpanogots lived in Utah Valley and by 1872 all Timpanogots had moved to the Uintah and Ouray Indian Reservation. However, some Timpanogots occasionally returned to fish on Utah Lake into the 1920s.
Captain Howard Stansbury of the United States Army's Corp of Topographical Engineers was ordered to map, survey, and explore Utah and Salt Lake Valleys. In 1850, Captain Stansbury explored Utah Lake and Utah Valley, surveyed and made observation of the local wildlife.
Historically, there have been four species of amphibia, twelve species of reptiles, thirteen species of fish, 152 species of birds, and forty-two species of mammals found in the environs of Utah Lake. The dumping of raw sewage, destruction of natural habit, hunting, and the introduction of non-native fish species have taken a toll on the native species in and around the lake.
Some of the mammals that live around the lake are the big brown bat, the silver-haired bat, mule deer, Botta's pocket gopher, desert woodrat, and striped skunk. There are seventeen known native mollusca to Utah Lake. Only three were reported in the lake ecosystem in 1969, and one species is extinct. The last living example of the freshwater snail Thickshell pondsnail (Stagnicola utahensis) was reportedly seen in the early 1930s. Four specimens were sent to the Smithsonian Institution in 1911 and the only known location for the snail was Utah Lake.
During the 1800s and lasting into the 1930s, the killing of fish-eating birds was seen as a fish conservation measure. Bounties were given by local government entities, and upon presenting evidence of offending dead birds, game officers paid the bounties. A report by a hunter states, "There was a bounty paid on cranes and heron in 1895. Two men could make as high as $66 a day. Wading into the rookeries with their pants off they would crack the heron over the head. When the bounty was paid on pelican we would use a fish float tide to a wad of rushes. Gulls were also caught. There has been 10,000 slaughtered. At the Big Channel gidls have been shot and there are four or five hundred pelicans which have been shot. In 1928 I killed 1,240 mudhens [Coot]. We would eat the hearts and gizzards, take the feathers and oil and discard the rest."
Today, about 226 species of birds use the lake either as their permanent home or as a stop over on their migration. The Utah Lake Wetland Preserve has been established at the south end of Utah Lake. It contains two units, one at Goshen bay with more than 21,750 acres (88.0 km2) of land preserved, and another unit at Benjamin Slough. Birds seen at Utah Lake include sandhill crane, double-crested cormorant, great horned owl, turkey vulture, golden eagle, cinnamon teal duck, and mallard duck.
Parley P. Pratt visited Fort Utah in June 1849 and saw thousands of fish being caught by settlers and Timpanogots. He estimated that 5000 barrels of fish could be secured annually from the fishery. The winter of 1885-1886 caused much of the livestock to die. LDS Church leaders sent members in the Salt Lake Valley to Utah Lake to obtain fish; an estimated 96,000 pounds (44,000 kg) of fish were brought back. The first commercial fishery also started the same year. At the 1870 General Conference of the LDS Church, a committee was appointed to develop fish culture because of the declining fish harvest in Utah Lake. By 1904, it became illegal to commercially catch any fish except for non-native species.
At least 25 species of fish have been introduced into Utah Lake's waters. Thirteen introductions were unsuccessful. Carp, largemouth bass, white bass, black bullhead, channel catfish, Walleye, goldfish, yellow perch, blue gill, and black crappie are found in abundance. The golden shiner and the fathead minnow are rarely found.
Of the thirteen species of fish native to Utah Lake, one species is extinct (the Utah Lake sculpin), one is no longer present in the lake and is under review to see if it qualifies for protection under the Endangered Species Act (least chub), one is already listed as endangered (the June sucker), and one is found in relative abundance throughout Utah (the Utah sucker). All other native fish are no longer extant in the lake.
The Bonneville cutthroat trout was historically the top predator fish in the ecosystem, but is now restricted to tributary streams. A review in 2008 indicates that viable populations are distributed throughout its historic range and does not merit listing as a threatened or endangered species.
The Utah Lake sculpin was last found in 1928, and likely went extinct in the 1930s after severe drought lowered the lake levels, allowing much of the lake to freeze, overcrowding fish in unfrozen portions of the lake. This overcrowding and pollution from agricultural runoff are cited as probable causes of the fish's extinction.
The Bonneville redside shiner, mottled sculpin, leatherside chub, Utah chub, speckled dace, longnose dace, mountain whitefish and mountain sucker are no longer in the lake, but still exist in tributaries.
The June sucker was federally listed as an endangered species in 1986. The lower 5 miles (8.0 km) of the Provo River is the only known spawning location for the species. Biologists have been rearing the June sucker in Red Butte Reservoir and releasing them into Utah Lake to help build the population. During the summer of 2005, over 8,000 June sucker were released into Utah Lake. The June Sucker Recovery Implementation Program (JSRIP) coordinates and implements recovery actions for the June sucker.
The common carp was introduced in 1883 as a source of food after native species had been depleted by overfishing. It is now the most prevalent fish found in Utah Lake. Carp makes up about 90% of the lake's biomass, with an adult population numbering around 7.5 million. The average carp in the lake is about 5.3 pounds (2.4 kg), for a total of nearly 40,000,000 pounds (18,000,000 kg) of carp in the lake.
As early as 1901, fish and wildlife representatives noted that carp were causing the trout population in the lake to collapse. Due to their habit of grubbing through bottom sediments for food, carp stir up sediments and increase the turbidity of the water. In addition, they destroy submerged vegetation that holds sediments in place and provides shelter for native fish populations. Without vegetation, winds can more easily stir up sediment from the bottom of the lake, which is already a problem due to the lake's shallowness, resulting in greater turbidity and less sunlight reaching the remaining vegetation. Without cover for their young, native fish, such as the June sucker, become easy prey for white bass, walleye, carp, and other predators.
Efforts are underway to reduce the population of carp in Utah Lake by employing local commercial fishermen, led by Bill Loy, Jr. to remove 5 million pounds of carp each year, as part of the June Sucker Recovery Implementation Program's efforts to restore Utah Lake to a habitat in which the June Sucker can survive. The intent is to cause a crash in the carp population which will allow the ecosystem to begin to rebuild and the June sucker to reestablish dominance in the lake.
Due to its proximity to the Provo-Orem metropolitan area, Utah Lake is a fairly popular destination. From the 1880s to the 1930s, up to twelve resorts offering boat rentals, picnic facilities, dance halls, swimming pools, and bath houses served tourists at the lake. The most popular and longest-lived resort was Saratoga Springs, on the north shore. Saratoga Springs was best known for its natural hot springs, but also had waterslides and amusement park rides. It lasted from the 1860s until the floods of 1984. In the summer, fishing, water skiing, boating, camping, and picnicking are the most popular activities. During the winter, ice fishing, ice hockey and ice skating are popular on the lake especially at Utah Lake State Park, and Lincoln Beach. The main marina for Utah Lake is at Utah Lake State Park on the lake's eastern shore. Other marinas are at Saratoga Springs, American Fork, Lindon, and Lincoln Beach.
The ownership of lands along the shoreline of Utah Lake has been in dispute between the State of Utah and farmers for many years. The bed of Utah Lake, along with other natural lakes, was granted to the state upon admission to the Union in 1896. However, due to the lack of an exact definition and significantly fluctuating lake levels, intermittently dry areas and wetlands, including all of Provo Bay, have been claimed and farmed by surrounding land owners. The U.S. Supreme Court ruled in 1987 that the State of Utah owned the land beneath Utah Lake.
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- Horns, Daniel (May 2005), Utah Lake Comprehensive Management Plan Resource Document (PDF), Utah Division of Forestry, Fire & State Lands, retrieved April 6, 2010
- Utah Lake TMDL: Pollutant Loading Assessment and Designated Beneficial Use Impairment Assessment (PDF), State of Utah Division of Water Quality, August 2007, retrieved April 7, 2010
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