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City Creek is a small but historically important mountain stream that flows from City Creek Canyon and across part of Salt Lake City, Utah, and into the Jordan River which empties into the Great Salt Lake. City Creek's head is about 8 miles (13 km) up City Creek Canyon northeast of Downtown Salt Lake City. The entire stream measures only about 14.5 miles (23 km) long. Melting snow from adjacent mountains provides most of City Creek's currents, but the stream flows year-round because of natural springs at the head of the creek. Until 1882 City Creek served as the city's primary water supply, and it continues to provide drinking water to The Avenues and northern parts of Salt Lake City. ==History== Vanguards of the first Mormon pioneer settlers of Utah camped by the mouth of City Creek Canyon July 22, 1847. This area is now about the intersection between State Street and North Temple in Salt Lake City, Utah. The stream originally forked into a stream heading south through Washington Square and the primary branch flowing west, toward Temple Square and approximately down North Temple Street. Both forks emptied into the Jordan River. The vanguard, led by Orson Pratt, diverted the stream to soften the soil and plant crops. By July 24 when Brigham Young's party arrived, five acres (20,000 m²) of potatoes had already been planted. Young named the creeks in Salt Lake Valley on August 22, 1847, calling City Creek such because it was in the heart of the city that the pioneers planned. Young declared that the rights to all rivers were publicly held, and administration was initially carried out by the local LDS High Council, then by local wards (congregations). In 1850 Brigham Young himself gained sole rights to the water, although administration continued as usual. Ward Bishops transferred the responsibility of distributing water to the city council when Salt Lake City incorporated in 1851. City Creek was channeled along its western fork, and canals were dug on either side of every street of Salt Lake City. Water was delivered by opening gates to street canals. This system, administered by Bishop-appointed water masters, delivered drinking and agricultural water to ditches in front of every residents' plot. A piped waterworks was built to serve downtown in 1876, and the initial system was complete by June 22, 1877. However, water was unavailable in parts of the city, notably The Avenues, then called "the dry bench" because water had to be carried uphill from City Creek below. In 1878 Avenues residents petitioned the city to tax property to expand the water system, and the territorial legislature authorized the levy. A diversion to the dry bench was made in 1884, piping water to residents on 6th avenue and below. Subsequent diversions fed higher parts of the city, but it was not until 1910 that a diversion was constructed high enough to provide water to the whole city. Water became increasingly scarce in Salt Lake City in the 1860s, especially during drought years. The Red Butte Creek, used by the eastern parts of the city, was appropriated by the US Army when Fort Douglas was built in 1862. Salt Lake also grew rapidly, prompting the city council to invest in a canal project for bringing more water from Utah Lake 35 miles (56 km) to the south. In 1882 the Jordan-Salt Lake Canal was completed, allowing Salt Lake City to access reliable agricultural water. In 1888 the city entered an agreement with surrounding farmers to exchange volumes of the low-grade Utah Lake water for the purer water trickling from other mountain streams in Salt Lake Valley. In 1909 the creek was placed in an underground conduit down North Temple Street from outside of Memory Grove to west of the State Fairpark where the water exits into the Jordan River. ===Flood of 1983=== The stream remained underground until record precipitation in the winter of 1982/1983 produced enormous snowpack in the Creek's watershed. Late onset of warmer temperatures and a sudden warm spell in May swelled the stream. Saturday night, May 28, the North Temple conduit became clogged and the whole river overflowed into the streets, down Canyon Road and onto State Street. Volunteers worked frantically that Sunday morning to protect local buildings by sandbagging State Street, channeling the current down the east half of the street to large storm sewers near the Salt Lake City and County Building at 400 South. When the sewers overflowed, the "State Street River" was extended to 1300 South where the current flowed with other streams in conduits to the Jordan River. Temporary pedestrian bridges were built over State Street, which is part of US-89 and one of Salt Lake City's primary corridors. The stream returned to its normal course on June 11, but cleanup took several more weeks. The flood had proved a popular attraction, and some residents suggested bringing the stream permanently above ground and incorporating it into Salt Lake City in a more meaningful way. Attention to City Creek brought improvements to it. By next year, students from six high schools and local Boy Scouts constructed the "Freedom Trail" in the lower part of City Creek Canyon. In 1986 Salt Lake City drafted the "City Creek Master Plan" with the goal to maintain the canyon around City Creek "as a valuable watershed and recreation/open space amenity of city-wide significance." When The Church of Jesus Christ of Latter-day Saints completed the LDS Conference Center in 2000, part of the stream again became visible. City Creek runs freely by the center in a rough-hewn granite bed, accenting the building's waterfall. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「City Creek (Utah)」の詳細全文を読む スポンサード リンク
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