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121-615: Shorelines of Lake Bonneville are visible above Salt Lake City along the western front of the Wasatch Mountains and on other mountains throughout the Bonneville basin. These shorelines appear as shelves or benches that protrude from the mountainside above the valley floor, are visible on the ground from long distances and on satellite images, and have both depositional and erosional segments along their lengths. Three shorelines of Lake Bonneville that can be traced throughout

242-745: A Buddhist temple and Japanese Christian chapel – remain in downtown Salt Lake City. European ethnic groups and East Coast missionary groups constructed St. Mark's Episcopal Cathedral in 1874, B'nai Israel Temple in 1890, the Roman Catholic Cathedral of the Madeleine in 1909 and the Greek Orthodox Holy Trinity Cathedral in 1923. This time period also saw the creation of Salt Lake City's now defunct red-light district that employed 300 courtesans at its height before being closed in 1911. During

363-483: A change to warmer and drier climate (660 ft (200 m) is roughly 2/3 of the maximum depth of Lake Bonneville). Although Lake Bonneville and the Great Salt Lake are collectively one lake system, the name "Lake Bonneville" is applied to the lake during the period from 30,000 to 13,000 years ago, and the name "Great Salt Lake" since 13,000 years ago. Lake Bonneville was anomalous in the long-term history of

484-544: A corridor of contiguous urban and suburban development stretched along a 120-mile (190 km) segment of the Wasatch Front , comprising a population of 2,746,164 (as of 2021 estimates), making it the 22nd largest in the nation. With a population of 200,133 in 2020, it is the 117th most populous city in the United States . It is also the central core of the larger of only two major urban areas located within

605-401: A damaging windstorm with hurricane-force winds , amidst the wider national George Floyd protests , the global COVID-19 pandemic , and protests against pandemic measures . Salt Lake City has an area of 110.4 square miles (286 km ) and an average elevation of 4,327 feet (1,319 m) above sea level . The lowest point within the boundaries of the city is 4,210 feet (1,280 m) near

726-475: A fault segment was found at the southern edge of the convention center, and expansion plans were halted until more earthquake fault studies could be completed. The city, as well as the county , is laid out on a grid plan . Most major streets run very north–south and east–west. The grid's origin is the southeast corner of Temple Square, the block containing the Salt Lake Temple; the north–south axis

847-483: A flourishing Chinatown in Salt Lake City nicknamed "Plum Alley", which housed around 1,800 Chinese during the early 20th century. The Chinese businesses and residences were demolished in 1952 although a historical marker has been erected near the parking ramp which has replaced Plum Alley. Immigrants also found economic opportunities in the booming mining industries . Remnants of a once-thriving Japantown – namely

968-798: A large portion of Europe drains to the endorheic Caspian Sea, Europe's wet climate means it contains relatively few terminal lakes itself: any such basin is likely to continue to fill until it reaches an overflow level connecting it with an outlet or erodes the barrier blocking its exit. There are some seemingly endorheic lakes, but they are cryptorheic, being drained either through manmade canals , via karstic phenomena, or other subsurface seepage. A few minor true endorheic lakes exist in Spain (e.g. Laguna de Gallocanta , Estany de Banyoles ), Italy , Cyprus ( Larnaca and Akrotiri salt lakes) and Greece . Many small lakes and ponds in North Dakota and

1089-571: A maximum difference of 7,099 feet (2164 m) being achieved with the rise of Twin Peaks from the Salt Lake Valley floor. The Salt Lake Valley floor is the ancient lakebed of Lake Bonneville , which existed at the end of the last ice age . Several Lake Bonneville shorelines can be distinctly seen as terraces on the foothills or benches of nearby mountains. Ancient folds of Lake Bonneville shorelines also lie underneath Salt Lake City, amplifying

1210-533: A moderate-sized lake rose above the level of Great Salt Lake, but not as high as Lake Bonneville. In his monograph on Lake Bonneville, G.K. Gilbert called the offshore deposits of Lake Bonneville the "White Marl ". Although the name "White Marl" has not been used by the geologic community in a formal sense, the informal term "white marl" (or "Bonneville marl") is frequently employed. The Bonneville marl at locations far from sources of clastic sediment (gravel, sand, and silt), such as river deltas or active wave zones,

1331-527: A more urban and suburban pattern, canal water companies were gradually replaced by culinary water systems. Downtown Salt Lake City has been a hub of commerce for the Intermountain West and its architecture reflects this history. Main Street , which was the primary commercial avenue for the city in the late 19th and early 20th centuries, anchors the historic core of the downtown area that begins at

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1452-709: A mountain range, cutting off water egress to the ocean. The inland water flows into dry watersheds where the water evaporates, leaving a high concentration of minerals and other inflow erosion products. Over time this input of erosion products can cause the endorheic lake to become relatively saline (a " salt lake "). Since the main outflow pathways of these lakes are chiefly through evaporation and seepage, endorheic lakes are usually more sensitive to environmental pollutant inputs than water bodies that have access to oceans, as pollution can be trapped in them and accumulate over time. Endorheic regions can occur in any climate but are most commonly found in desert locations. This reflects

1573-523: A redistribution of water from these hydrologically landlocked basins such that endorheic water loss has contributed to sea level rise , and it is estimated that most of the terrestrial water lost ends up in the ocean. In regions such as Central Asia, where people depend on endorheic basins and other surface water sources to satisfy their water needs, human activity greatly impacts the availability of that water. Large endorheic regions in Africa are located in

1694-527: A result, the population of the surrounding metropolitan area greatly outnumbers Salt Lake City. A major concern of recent government officials has been combating inner-city commercial decay. The city lost population from the 1960s through the 1980s, but experienced some recovery in the 1990s. Presently, the city has gained an estimated 5 percent of its population since the year 2000. The city has experienced significant demographic shifts in recent years. Hispanics now account for approximately 22% of residents and

1815-873: A role in the summer months, causing tropospheric ozone to peak in July & August, but in 2015 it started at the beginning of June. In 2016 Salt Lake's air quality was ranked 6th worst in the nation by the American Lung Association. It received an F grade for both ozone and particulate matter. Particulate pollution is considered especially dangerous, as the tiny pollutants can lodge deep in lung tissue. Both ozone and particulate pollution are associated with increased rates of strokes, heart attacks, respiratory disease, cancer and premature death. Outdoor air particulates have been associated with low and very low birth weight, premature birth, congenital defects, and death. Severe drought and water diversions have shrunk

1936-481: A shift to a negative water balance (more water evaporated off the surface of the lake than entered by rivers or direct precipitation) caused the lake to return to its closed-basin status as it declined to lower levels during the regressive phase. By 13,000 years ago the lake had fallen to an elevation similar to the average elevation of modern Great Salt Lake. During the regressive phase lake level declined approximately 660 ft (200 m) in about 2000 years because of

2057-481: A tendency to acquire or trade for these water rights. These can then be traded for culinary water rights to water imported into the valley. At its peak, irrigation in the valley comprised over one hundred distinct canal systems, many originating at the Jordan Narrows at the south end of the valley. Water and water rights were important in the 19th and early 20th centuries. As heavy agricultural usage changed into

2178-443: A total average of 60 inches (152 cm), although measurable snow has fallen as early as September 17 and as late as May 28. The snowiest season was 1951–52, with 117.3 inches (298 cm), while the least snowy season was 16.6 inches (42 cm) in 1933–34. The snowiest month on record was January 1993, in which 50.3 inches (128 cm) were recorded. The nearby Great Salt Lake is a significant contributor to precipitation in

2299-742: A tremendous flood, the Bonneville flood , which charged down the Marsh Creek valley to the Portneuf River , into the Snake River and then into the Columbia River and Pacific Ocean . Groundwater sapping on the north slope of the Marsh Creek alluvial fan, which began long before the lake had reached its highest level, added to the instability and ultimate collapse of the fan-dam. The Bonneville flood probably lasted less than

2420-409: A year, during which time almost 1,200 cu mi (5,000 km) of water flowed out of the lake basin with a maximum discharge of about 35,000,000 cu ft/s (1,000,000 m/s). Downcutting during the flood through the Marsh Creek alluvial-fan deposits and into the underlying Neogene sand, mud, and landslide debris, caused lake level to drop about 430 ft (130 m). River flow from

2541-406: Is Main Street; and the east–west axis is South Temple Street. Addresses are coordinates within the system (similar to latitude and longitude ). Odd and even address numbering depends on the quadrant of the grid in which an address is located. The rule is: When traveling away from the grid center (Temple Square) or its axes (Main Street, South Temple Street), odd numbers will be on the left side of

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2662-466: Is a drainage basin that normally retains water and allows no outflow to other external bodies of water (e.g. rivers and oceans ); instead, the water drainage flows into permanent and seasonal lakes and swamps that equilibrate through evaporation . Endorheic basins are also called closed basins , terminal basins , and internal drainage systems . Endorheic regions contrast with open lakes (exorheic regions), where surface waters eventually drain into

2783-415: Is characterized by an abrupt contact at its base between massive marl, which was deposited in the deepest water of Lake Bonneville, and finely laminated or ripple-laminated sandy marl, which was deposited by bottom currents during the flood. In places the Bonneville flood bed is composed of reworked ostracode shells. The contact at the top of the flood bed is transitional to massive marl that was deposited in

2904-589: Is dominated by clay-sized particles of calcium carbonate that precipitated chemically from the lake water. Most of this calcium carbonate is in the form of the mineral calcite , but aragonite is common in Bonneville marl in the Sevier basin and in the lower part of the Bonneville marl stratigraphic section in the main body. Aragonite is the dominant carbonate mineral in sediments of post-Bonneville Great Salt Lake. Dropstones, probably mostly derived from shore ice, but possibly also from floating root balls, are common in

3025-521: Is home to a significant LGBT community and hosts the annual Utah Pride Festival . It is the industrial banking center of the United States. Salt Lake City and the surrounding area are also the location of several institutions of higher education including the state's flagship research school, the University of Utah . Sustained drought in Utah has strained Salt Lake City's water security , caused

3146-484: Is mediated by its unique geography, generally keeping highs and lows from reaching extremes. The primary source of precipitation in Salt Lake City is massive storms that move in from the Pacific Ocean along the jet stream from October to May. In mid-to-late summer, when the jet stream retreats far to the north, precipitation mainly comes from afternoon thunderstorms caused by monsoon moisture moving up from

3267-399: Is more economically diverse on the west side, which results in demographic differences. Interstate 15 was also built in a north–south line, further dividing east and west sides of the city. Sugar House , in southeastern Salt Lake City, has a reputation as an older neighborhood with small shops in the center. Sugar House is an area which has been the focus of redevelopment efforts such as

3388-403: Is one such case, with annual precipitation of 850 mm (33 in) and characterized by waterlogged soils that require draining. Endorheic regions tend to be far inland with their boundaries defined by mountains or other geological features that block their access to oceans. Since the inflowing water can evacuate only through seepage or evaporation, dried minerals or other products collect in

3509-436: Is only 22%. Winters are quite cold but rarely frigid. While an average of 127 days drop to or below freezing, and 26 days with high temperatures that fail to rise above freezing, the city only averages 6.3 days at or below 10 °F (−12.2 °C). The record high temperature is 107 °F (42 °C), which occurred first on July 26, 1960, July 13, 2002, June 16, 2021, July 17, 2022, and most recently September 7, 2022, while

3630-625: Is the capital and most populous city of the U.S. state of Utah . It is the county seat of Salt Lake County , the most populous county in the state. The city is the core of the Salt Lake City Metropolitan Statistical Area (MSA), which had a population of 1,257,936 at the 2020 census. Salt Lake City is further situated within a larger metropolis known as the Salt Lake City–Ogden–Provo Combined Statistical Area ,

3751-438: Is the right place, drive on." Brigham Young is said to have seen the area in a vision before the wagon train's arrival. They found the broad valley empty of any human settlement. Four days after arriving in the Salt Lake Valley, Brigham Young designated the building site for the Salt Lake Temple. The Salt Lake Temple, constructed on the block later called Temple Square, took 40 years to complete. Construction started in 1853, and

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3872-618: The American Old West . The first group of settlers brought African slaves with them, making Utah the only place in the western United States to have African slavery. Three slaves, Green Flake, Hark Lay, and Oscar Crosby, came west with the first group of settlers in 1847. The settlers also began to purchase Indian slaves in the well-established Indian slave trade, as well as enslaving Indian prisoners of war. In 1850, 26 slaves were counted in Salt Lake County. In 1852,

3993-569: The Bonneville flood . The Malheur / Harney lake system in Oregon is normally cut off from drainage to the ocean, but has an outflow channel to the Malheur River . This is presently dry, but may have flowed as recently as 1,000 years ago. Examples of relatively humid regions in endorheic basins often exist at high elevation. These regions tend to be marshy and are subject to substantial flooding in wet years. The area containing Mexico City

4114-468: The Great Basin (the other being Reno, Nevada ). Salt Lake City was founded on July 24, 1847, by early pioneer settlers led by Brigham Young who were seeking to escape persecution they had experienced while living farther east. The Mormon pioneers , as they would come to be known, entered a semi-arid valley and immediately began planning and building an extensive irrigation network which could feed

4235-518: The Gulf of California . Although rainfall can be heavy, these storms are usually scattered in coverage and rarely severe. However, downtown was hit by an F2 tornado on August 11, 1999, killing 1 person, injuring 60, and causing $ 170 million in damage. The remnants of tropical cyclones from the East Pacific can rarely reach the city during Fall. The remnants of Hurricane Olivia helped bring

4356-787: The Hotel Newhouse , and the Salt Lake Theatre . After a period of stagnation in the era of urban sprawl , and with the construction of TRAX in the late 1990s and the City Creek Center in the early 2010s, downtown Salt Lake City is experiencing a period of revival. Empty lots and older structures are in the process of being redeveloped into apartment and office towers and the city has begun to close Main Street to automobile traffic on summer weekends to encourage pedestrian activity and business. More than 5,000 new residential units are planned or under construction for

4477-566: The Jordan River and the Great Salt Lake, and the highest is Grandview Peak , at 9,410 feet (2,868 m). The city is in the northeast corner of the Salt Lake Valley surrounded by the Great Salt Lake to the northwest, the steep Wasatch Range to the east, and Oquirrh Mountains to the west. Its encircling mountains contain several narrow canyons, including City Creek , Emigration , Millcreek , and Parley's which border

4598-692: The Laurentide and Cordilleran ice sheets in northern North America. Lake Bonneville was named by the geologist G.K. Gilbert after Benjamin Louis Eulalie de Bonneville (1796–1878), a French-born officer in the United States Army who was also a fur trapper and explorer in the American West. Bonneville's adventures were popularized by Washington Irving in the 1800s, but Captain Bonneville probably never saw Great Salt Lake or

4719-942: The Sahara Desert , the Sahel , the Kalahari Desert , and the East African Rift : Endorheic lakes exist in Antarctica's McMurdo Dry Valleys , Victoria Land , the largest ice-free area. Much of Western and Central Asia is a giant endorheic region made up of a number of contiguous closed basins. The region contains several basins and terminal lakes, including: Other endorheic lakes and basins in Asia include: Australia , being very dry and having exceedingly low runoff ratios due to its ancient soils, has many endorheic drainages. The most important are: Though

4840-844: The Salt Lake Temple and concludes at the City and County Building . Halfway between those two structures, the Walker Center , at the corner of Main and 200 South, was built in 1912 and was the tallest building between Chicago and San Francisco upon its completion. Other extant pre-war structures include the Kearns Building , Hotel Monaco , the First Security Building, the Joseph Smith Memorial Building (formerly Hotel Utah),

4961-606: The UTA S-Line Streetcar . In late 2015 there were approximately 900 apartment units either recently built or under construction in the Sugar House area, with an additional 492 units proposed. Northeast of Downtown is The Avenues, a neighborhood outside of the regular grid system on smaller blocks. The area between 6th Avenue to South Temple Street is a Historical District that is nearly entirely residential, and contains many historical Victorian era homes. Recently

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5082-477: The University of Utah , commercial precincts, and the Wasatch foothills. The western neighborhoods of the city, such as Poplar Grove , Rose Park , and Glendale tend to be more working-class and ethnically diverse and are popular with immigrants and young people. This divide is a result of the railroad being built in the western half as well as panoramic views from inclined ground in the eastern portion. Housing

5203-631: The Utah State Capitol and Democratic lawmakers have introduced legislation in the Utah State Legislature to make public transportation free during January and July, when air quality is usually at its worst. The population of the Salt Lake City metropolitan area is projected to double by 2040, putting further pressure on the region's air quality. The Great Salt Lake is separated from Salt Lake City by extensive marshlands and mudflats. The metabolic activities of bacteria in

5324-608: The last major glaciation . For most of its existence (that is, during the transgressive plus regressive phases) Lake Bonneville had no river outlet and occupied a hydrographically closed basin. Changes in lake level were the result of changes in water balance caused by climate change (a simplified version of the water-balance equation is inputs equal outputs plus-or-minus storage changes). Storage changes are equal to volume changes, and changes in volume are correlated with changes in lake level. When inputs (e.g., precipitation; runoff in rivers) were greater than outputs (e.g., evaporation from

5445-451: The liquefaction of the clay- and sand-based soil and the possible permanent flooding of portions of the city by the Great Salt Lake. On March 18, 2020, a 5.7 magnitude earthquake , the largest in the Salt Lake City area in modern times, hit Magna , just southwest of Salt Lake City, causing some minor damage throughout the valley. Damage in Salt Lake City was especially evident in historic brick homes— unreinforced masonry buildings —such as

5566-570: The territorial prison in Sugar House in the 1880s for violation of anti-polygamy laws. The church began its eventual abandonment of polygamy in 1890, releasing "The Manifesto" , which officially suggested members obey the law of the land (which was equivalent to forbidding new polygamous marriages inside the US and its territories, but not in church member settlements in Canada and Mexico). This paved

5687-483: The "Gilbert shoreline" as one of the prominent shorelines in the Bonneville basin, but this interpretation has been revised. The "Gilbert shoreline" consists of a line on a map that connects lacustrine shoreline features, such as barrier beaches, but there is no evidence that all the barriers formed at the same time. It is now clear that some of those barrier beaches are transgressive-phase Bonneville in age and some are regressive-phase Bonneville in age. The Gilbert episode

5808-652: The 1892 Sears mansion which required demolition after the earthquake. The Warm Springs Fault and the East Bench Fault, offshoots of the Wasatch Fault, were found in 2021 to connect underneath Salt Lake City, increasing the risk of major metropolitan damage from an earthquake. Prior to this, in 1997 the Salt Lake Tribune published a front-page exposé about how the construction of the downtown Salt Palace convention center had been hastened by

5929-419: The 1970s. Salt Lake City has a humid continental climate ( Dsa ), while western parts may experience a Mediterranean climate ( Csa ), as summers are dry and hot and winters are cold and wet, but rarely frigid. Late summer and early fall monsoonal activity can keep precipitation fairly consistent throughout the year aside from early to mid summer when rain is minimal. The temperature of the Salt Lake City area

6050-663: The Avenues is becoming known for restaurants and shops opening in old retail space mixed within the community. The Avenues are situated on the upward-sloping bench in the foothills of the Wasatch Range, with the earlier built homes in the lower elevation. The Avenues, along with Federal Heights , just to the east and north of the University of Utah , and the Foothill area, south of the university, contain gated communities, large, multimillion-dollar houses, and panoramic views of

6171-791: The Boston and Newhouse Buildings, the Utah State Capitol , and the Clift Building . Salt Lake City has two historic passenger rail depots, the Denver and Rio Grande Western Depot and the Union Pacific Depot , the latter of which now anchors the Gateway district. Salt Lake City lost many significant structures to forces such as urban renewal in the 20th century, including the Dooly Building , designed by Louis Sullivan ,

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6292-635: The Confederate States of America, marched through the city and found it had been evacuated. They continued their march through the deserted city to vacant land at the southwest corner of the valley. There they set up Camp Floyd (40 miles (64 km) south of the city). Another military installation, Fort Douglas , was established in 1862 to maintain Union allegiance during the American Civil War . Many area leaders were incarcerated at

6413-453: The French word endoréisme , which combines endo- ( Ancient Greek : ἔνδον éndon 'within') and ῥεῖν rheîn 'flow'. Endorheic lakes (terminal lakes) are bodies of water that do not flow into an ocean or a sea. Most of the water that falls to Earth percolates into the oceans and the seas by way of a network of rivers, lakes, and wetlands . Analogous to endorheic lakes is

6534-465: The Great Basin. G.K. Gilbert was one of the greatest geologists of the 19th Century, and his monumental work on Lake Bonneville, published in 1890, set the stage for scientific research on the paleolake that continues today. Gilbert was the first person to describe the major features of Lake Bonneville, however, many other early European and American explorers in the region recognized the shoreline of

6655-600: The Great Salt Lake by two-thirds and reduced it to its lowest recorded levels, resulting in hundreds of square miles of dry lake bed and exposing millions of people living in the fast-growing metropolitan region to dust storms laced with arsenic and other toxic chemicals. Around 65% of the diverted water goes to agriculture, but demand for water is soaring as Utah's population grows. Endorheic basin An endorheic basin ( / ˌ ɛ n d oʊ ˈ r iː . ɪ k / EN -doh- REE -ik ; also endoreic basin and endorreic basin )

6776-404: The Great Salt Lake level to drop to record low levels, and has impacted the local and state economy. The receding lake has exposed arsenic which may become airborne, exposing area residents to poisonous dust. The city is also under threat of major earthquake damage amplified by two offshoots of the nearby Wasatch Fault that join underneath the downtown area. Before settlement by members of

6897-687: The LDS Church, the Shoshone , Weber Ute, and Paiute had dwelt in the Salt Lake Valley for thousands of years. At the time of Salt Lake City's founding, the valley was within the territory of the Northwestern Shoshone . One local Shoshone tribe, the Western Goshute tribe, had names for the Jordan River , City Creek , and Red Butte Canyon (Pi'o-gwût, So'ho-gwût, and Mo'ni-wai-ni). The Goshutes (or, Gosiutes) also lived in

7018-609: The Latter-day Saints in July 1847, during the Mexican-American War . They had traveled beyond the boundaries of the United States into Mexican Territory seeking a secluded area to safely practice their religion away from the violence and the persecution they experienced in the United States . Upon arrival at the Salt Lake Valley, president of the church Brigham Young is recorded as stating, "This

7139-602: The Olympic games, but business did not pick up immediately following. On July 24, 2024, Salt Lake City was formally chosen by the International Olympic Committee (IOC) to host the 2034 Olympic Winter Games. All of the facilities from the previous Games can be re-used, and the bid enjoyed support from the IOC and the city. Salt Lake City hosted the 16th Winter Deaflympic games in 2007, taking place in

7260-556: The President of the United States to appoint a surveyor general for Utah Territory, and to cause that the lands of that territory should be surveyed preparatory to bringing them on the market. Because of numerous conflicts between the surveyor and the territorial government the first surveyor general abandoned his post in 1857, not to return till 1869. The pioneers organized a state called State of Deseret , and petitioned for its recognition in 1849. The United States Congress rebuffed

7381-462: The Wasatch Range. The second-highest mountain range is the Oquirrhs, reaching a maximum height of 10,620 feet (3,237 m) at Flat Top. The east–west-oriented Traverse Mountains to the south extend to 6,000' (1830m), nearly connecting the Wasatch and Oquirrh Mountains. The mountains near Salt Lake City are easily visible from the city and have sharp vertical relief caused by ancient earthquakes, with

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7502-506: The ancient lake, such as Captain John C. Frémont in 1843 and even earlier by Father Silvestre Velez de Escalante in 1776. Escalante, in a journal entry after visiting what would be named Utah Lake wrote, "This place, which we named Llano Salado, because we found some thin white shells there, seems to have once had a much larger lake than the present one." Although a general description and understanding of Lake Bonneville has been established by

7623-493: The balance between tectonic subsidence and rates of evaporation and sedimentation. Where the basin floor is dropping more rapidly than water and sediments can accumulate, any lake in the basin will remain below the sill level (the level at which water can find a path out of the basin). Low rainfall or rapid evaporation in the watershed favor this case. In areas where rainfall is higher, riparian erosion will generally carve drainage channels (particularly in times of flood), or cause

7744-460: The basin, eventually making the water saline and also making the basin vulnerable to pollution. Continents vary in their concentration of endorheic regions due to conditions of geography and climate. Australia has the highest percentage of endorheic regions at 21 per cent while North America has the least at five per cent. Approximately 18 per cent of the Earth's land drains to endorheic lakes or seas,

7865-541: The basin, have been given names: Stansbury, Bonneville, and Provo. The Stansbury and Bonneville shorelines formed during the transgressive phase of Lake Bonneville; the Provo shoreline formed during the overflowing phase. Numerous other unnamed shorelines, which cannot be mapped everywhere in the basin, some of which formed during the transgressive phase and some during the regressive phase, are also present on piedmont slopes and alluvial fans . At its maximum, when Lake Bonneville

7986-418: The basin. As the largest of four deep lakes in the basin during the past 800,000 years, Lake Bonneville plus the other three deep Pleistocene lakes, persisted for less than 10% of the time. The conditions experienced in the basin today are typical of over 90% of the past 800,000 years: a dry desert basin with a few scattered low-elevation lakes, the largest of which (Great Salt Lake) was hypersaline . For most of

8107-436: The bulb of the native sego lily , which has long been part of the ordinary diet of the Shoshone, sego being derived from the Shoshone word seego . The sego lily was commemorated by the Sego Lily Dam, a flood-prevention infrastructure project in the shape of a giant sego lily, built in Sugar House Park in 2017. The city was not platted until after the federal surveyor abandoned his post in 1857. In 1855 Congress directed

8228-408: The city has a significant LGBT community. There is also a large Pacific Islander population (mainly Samoans and Tongans ); they compose roughly 2% of the population of the Salt Lake Valley area. Salt Lake City was selected in 1995 to host the 2002 Winter Olympics. The games were plagued with controversy. A bid scandal surfaced in 1998 alleging bribes had been offered to secure the bid. During

8349-408: The city when UTA's TRAX opened in 1999. The S Line (formerly known as Sugar House Streetcar) opened for service in December 2013 on an old D&RGW right-of-way. The city's population began to stagnate during the 20th century as population growth shifted to suburban areas north and south of the city. Few of these areas were annexed to the city, while nearby towns incorporated and expanded. As

8470-411: The city. The city also has a belt route , I-215. Salt Lake City has developed a strong tourist industry based primarily on skiing , outdoor recreation , and religious tourism . It hosted the 2002 Winter Olympics and will host the 2034 Winter Olympics . It is known for its politically liberal culture, which stands in contrast with most of the rest of the state's highly conservative leanings. It

8591-613: The city. The lake effect can enhance rain from summer thunderstorms and produces lake-effect snow approximately 6 to 8 times per year, some of which can produce prodigious snowfall amounts. It is estimated about 10% of the annual precipitation in the city can be attributed to the lake effect. Salt Lake City features large variations in temperatures between seasons. During summer, there are an average of 56 days per year with temperatures of at least 90 °F (32.2 °C), 23 days of at least 95 °F (35 °C), and 9 days of 100 °F (37.8 °C). However, average daytime July humidity

8712-537: The class of bodies of water located in closed watersheds (endorheic watersheds) where the local topography prevents the drainage of water into the oceans and the seas. These endorheic watersheds (containing water in rivers or lakes that form a balance of surface inflows, evaporation and seepage) are often called sinks. Endorheic lakes are typically located in the interior of a landmass, far from an ocean, and in areas of relatively low rainfall. Their watersheds are often confined by natural geologic land formations such as

8833-498: The county geologist who erased the Warm Springs Fault from earthquake maps of Salt Lake City so that the downtown area appeared to be free of faults, enabling the convention center developers to avoid the time and expense of an earthquake hazard and risk assessment. The newspaper showed that the Warm Springs Fault runs north–south along W. Temple, directly adjacent to Temple Square and the convention center. A year later,

8954-422: The danger of earthquakes. Salt Lake City is subject to earthquakes from active fault lines running through it. These faults are related to the regional Wasatch Fault which runs north–south along the western base of the Wasatch Range and is considered at high risk of producing an earthquake as large as 7.5 magnitude . Catastrophic damage is predicted in the event of an earthquake with major damage resulting from

9075-564: The degree that a lake no longer forms. Even most permanent endorheic lakes change size and shape dramatically over time, often becoming much smaller or breaking into several smaller parts during the dry season. As humans have expanded into previously uninhabitable desert areas, the river systems that feed many endorheic lakes have been altered by the construction of dams and aqueducts. As a result, many endorheic lakes in developed or developing countries have contracted dramatically, resulting in increased salinity, higher concentrations of pollutants, and

9196-440: The disruption of ecosystems. Even within exorheic basins, there can be "non-contributing", low-lying areas that trap runoff and prevent it from contributing to flows downstream during years of average or below-average runoff. In flat river basins, non-contributing areas can be a large fraction of the river basin, e.g. Lake Winnipeg 's basin. A lake may be endorheic during dry years and can overflow its basin during wet years, e.g.,

9317-497: The downtown area as of April 2021 and many new breweries and restaurants have opened in the last decade. Regent Street, which in the early 20th century was the city's red-light district , has recently been redeveloped with the notable additions of the 2,468-seat Eccles Theater and 111 Main, an adjacent 24-story office building. A distinctive feature of Salt Lake City's cityscape is its very large block sizes, which are 660 feet square and separated by streets 132 feet wide, making them

9438-513: The eastern city limits. The burgeoning population of Salt Lake City and the surrounding metropolitan area, combined with its geographical situation, has led to air quality becoming a concern. The Great Basin is subject to strong temperature inversions during the winter, which trap pollutants and decrease the air quality. The Utah Division of Air Quality monitors air quality and issues alerts for voluntary and mandatory actions when pollution exceeds federal safety standards. Protests have been held at

9559-783: The former Tulare Lake . Because the Earth's climate has recently been through a warming and drying phase with the end of the Ice Ages, many endorheic areas such as Death Valley that are now dry deserts were large lakes relatively recently. During the last ice age, the Sahara may have contained lakes larger than any now existing. Climate change coupled with the mismanagement of water in these endorheic regions has led to devastating losses in ecosystem services and toxic surges of pollutants. The desiccation of saline lakes produces fine dust particles that impair agriculture productivity and harm human health. Anthropogenic activity has also caused

9680-507: The games, other scandals erupted over contested judging scores and illegal drug use. Despite the controversies, the games were heralded as a financial success, being one of the few in recent history to turn a profit. In preparation major construction projects were initiated. Local freeways were expanded and repaired, and a light rail system was constructed. Olympic venues are now used for local, national, and international sporting events and Olympic athlete training. Tourism has increased since

9801-507: The lake across the Red Rock Pass threshold and out of the lake basin continued non-catastrophically for about 3000 years after the flood ended; the Provo shoreline formed during this overflowing phase. The Provo shoreline is distinguished from other shorelines of Lake Bonneville by its topographic position, strong development, and thick accumulations of tufa . At the end of the overflowing phase, about 15,000 years ago, climate change and

9922-444: The lake floor during Provo time. The flood bed is best developed and most obvious in straits between partially submerged mountain ranges or in places where bottom currents were strong as lake water flowed toward its outlet at Red Rock Pass. Because the Bonneville flood bed was deposited in less than a year, it is useful as a well-dated (~18,000 years ago) stratigraphic marker within the Bonneville deposits. Previous publications regarded

10043-496: The lake gradually rose until about 18,000 years ago when it reached its highest elevation, marked by the Bonneville shoreline. At that level the lake had risen to the lowest point on its basin rim and had begun to overflow into the Snake River drainage near Red Rock Pass in what is now southeastern Idaho. The overflow, which would have begun as a trickle across the dam formed by the Marsh Creek alluvial fan, quickly evolved into

10164-413: The lake result in a phenomenon known as "lake stink", a scent reminiscent of foul poultry eggs, two to three times per year for a few hours. The Jordan River flows through the city and is a drainage of Utah Lake that empties into the Great Salt Lake. The highest mountaintop visible from Salt Lake City is Twin Peaks , which reaches 11,330 feet (3,450 m). Twin Peaks is southeast of Salt Lake City in

10285-434: The lake surface; evapotranspiration in the basin), lake level rose, and when outputs were greater than inputs, lake level fell. Changes in global atmospheric circulation led to changes in the water budget of Lake Bonneville and other lakes in the Great Basin of western North America. Mountain glaciers in the Bonneville drainage basin stored less than 5% of the water that Lake Bonneville held at its maximum and so even if all of

10406-468: The lake was very shallow. As an example of isostatic deformation of the shorelines, the elevation of the Bonneville shoreline near Salt Lake City is 5,203 ft (1,586 m), but on Antelope Island in the Great Salt Lake, the elevation of the same shoreline is 5,246 ft (1,599 m). In addition to the abundant geological features produced by Lake Bonneville, such as shorelines and sediments, fossilized fish bones and scales reveal information about

10527-516: The largest in the United States. This and the resulting development patterns gives the city and its buildings a unique sense of scale but also a distinct challenge to urban walkability , with many streets boasting six lanes for automobile traffic. On the other hand, the extra-wide streets have made the addition of dedicated transit lanes and light rail more feasible and many streets are now being redesigned with features such as protected bike lanes, linear parks, and even spaces for urban development within

10648-422: The largest of these land areas being the interior of Asia. In deserts, water inflow is low and loss to solar evaporation high, drastically reducing the formation of complete drainage systems . In the extreme case, where there is no discernible drainage system, the basin is described as arheic . Closed water flow areas often lead to the concentration of salts and other minerals in the basin. Minerals leached from

10769-425: The late 19th and early 20th centuries, an extensive streetcar system was constructed throughout the city, with the first streetcar running in 1872 and electrification of the system in 1889. As in the rest of the country, the automobile usurped the streetcar, and the last trolley was approved for conversion in 1941, yet ran until 1945, due to World War II . Trolley buses ran until 1946. Light rail transit returned to

10890-411: The marl, and consist of granule- to boulder-sized clasts . The Bonneville flood had catastrophic effects along the Snake River in what is now Idaho, but the influence of the flood can also be detected within the lake basin where a distinctive layer of sediment was deposited. The Bonneville flood bed can be identified in many surface exposures below the Provo shoreline and in sediment cores. The flood bed

11011-535: The medians. The city also encourages new projects to incorporate mid-block walkways and other scale-mitigation strategies into planning to promote pedestrian engagement. Salt Lake City has many distinct neighborhoods. There is a general east–west socioeconomic divide. The eastern neighborhoods of the city, such as the Avenues , 9th & 9th , Yalecrest , Federal Heights , and Sugar House tend to be more affluent. These districts are popular with professionals, families, and students due to their proximity to Downtown,

11132-525: The menu from a high-society ball. Disputes with the federal government ensued over the church's practice of polygamy . A climax occurred in 1857 when President James Buchanan declared the area in rebellion after Brigham Young refused to step down as governor, beginning the Utah War . A division of the United States Army , commanded by Albert Sidney Johnston , later a general in the army of

11253-462: The mountain glaciers in the basin melted at once and the water flowed into the lake (that did not happen since it took thousands of years for the mountain glaciers to melt, and Lake Bonneville was falling by that time), it would have had little effect on lake level. Lake Bonneville had no river connection with the huge North American ice sheets. While Lake Bonneville existed, the patterns of wave- and current-forming winds were not significantly affected by

11374-599: The nearby Utah Valley (the 1776 Dominguez-Escalante expedition were undoubtedly aware of Salt Lake Valley's existence). U.S. Army officer John C. Frémont surveyed the Great Salt Lake and the Salt Lake Valley in 1843 and 1845. The Donner Party , a group of ill-fated pioneers, had traveled through the Great Salt Lake Valley in August 1846. The settling of Salt Lake City dates to the arrival of

11495-462: The ocean. In general, water basins with subsurface outflows that lead to the ocean are not considered endorheic; but cryptorheic . Endorheic basins constitute local base levels , defining a limit of the erosion and deposition processes of nearby areas. Endorheic water bodies include the Caspian Sea , which is the world's largest inland body of water. The term endorheic derives from

11616-768: The physical and chemical characteristics of the paleolake. Pollen from plants that lived in the Bonneville basin is abundant in Bonneville marl. Invertebrate fossils in Lake Bonneville deposits include mollusks and ostracodes, and bones of extinct mammals are found in Pleistocene deposits in the Bonneville basin. Volcanic ashes in sediments of Lake Bonneville help with correlations and aid in deciphering lake history. Lake Bonneville shorelines, and those of other paleolakes on Earth, are good analogs for shorelines on other planets, such as Mars. Salt Lake City Salt Lake City , often shortened to Salt Lake or SLC ,

11737-469: The population and foster future growth. Salt Lake City's street grid system is based on a standard compass grid plan, with the southeast corner of Temple Square (the area containing the Salt Lake Temple in downtown Salt Lake City) serving as the origin of the Salt Lake meridian . Owing to its proximity to the Great Salt Lake , the city was originally named Great Salt Lake City. In 1868, the word "Great"

11858-418: The record low is −30 °F (−34 °C), which occurred on February 9, 1933. During mid-winter, strong areas of high pressure often stagnate over the Great Basin , leading to strong temperature inversions . This causes air stagnation and thick smog in the valley from several days to weeks at a time and can result in the nation's worst air-pollution levels. This same effect will also occasionally play

11979-631: The record monthly precipitation of 7.04 inches (179 mm) in September 1982. 1983 was the wettest year on record, with 24.26 inches (616 mm), while 1979 was the driest, when 8.70 inches (221 mm) were recorded. Spring snowmelt from the surrounding mountains can cause localized stream flooding during late spring and early summer, the worst examples being in 1952 and especially 1983, when City Creek burst its banks, forcing city engineers to convert several downtown streets into waterways. Snow falls on average from November 6 to April 18, producing

12100-626: The rest of the city. Smith's Plat of Zion specified the city was to be developed into 135 10-acre (4.0 ha) lots. However, the blocks in Salt Lake City became irregular during the late 19th century when the Church of Jesus Christ of Latter-day Saints lost authority over growth and before the adoption of zoning ordinances in the 1920s. The original 10-acre (4.0 ha) blocks allowed for large garden plots, and many were supplied with irrigation water from ditches that ran approximately where modern curbs and gutters would be laid. The original water supply

12221-482: The settlers in 1850 and established the Utah Territory , vastly reducing its size, and designated Fillmore as its capital city. Great Salt Lake City replaced Fillmore as the territorial capital in 1856, and the name later was shortened to Salt Lake City. The city's population continued to swell with an influx of converts to the LDS Church and Gold Rush gold seekers, making it one of the most populous cities in

12342-455: The source of the unusual width. These wide streets and grid pattern are typical of other Mormon towns of the pioneer era throughout the West. Though the nomenclature may initially confuse new arrivals and visitors, most consider the grid system an aid to navigation. Some streets have names, such as State Street, which would otherwise be known as 100 East. Other streets have honorary names, such as

12463-595: The street. A common explanation for the unusually wide streets of Salt Lake City is that Brigham Young wanted a wagon with a team of oxen to be able to turn around. However, Young was never recorded giving this directive. Joseph Smith, founder of the Latter Day Saint movement, planned the layout in the " Plat of the City of Zion " (intended as a template for Mormon towns wherever they might be built). This plan included streets 132 ft (40 m) wide, and may be

12584-543: The summer of 2007, 9th and 9th saw sidewalk and street improvements as well as an art installation by Troy Pillow of Seattle, Washington inspired by the 9 Muses of Greek myth, thanks in part to a monetary grant from Salt Lake City. Many of the homes in the valley date from pre–World War II times, and only a select few areas, such as Federal Heights and the East Bench, as well as the far west side, including parts of Rose Park and Glendale, have seen new home construction since

12705-599: The surrounding rocks are deposited in the basin, and left behind when the water evaporates. Thus endorheic basins often contain extensive salt pans (also called salt flats, salt lakes, alkali flats , dry lake beds, or playas). These areas tend to be large, flat hardened surfaces and are sometimes used for aviation runways , or land speed record attempts, because of their extensive areas of perfectly level terrain. Both permanent and seasonal endorheic lakes can form in endorheic basins. Some endorheic basins are essentially stable because climate change has reduced precipitation to

12826-468: The temple was dedicated on April 6, 1893. The temple has become an icon for the city and serves as its centerpiece. The southeast corner of Temple Square is the point of reference for the Salt Lake meridian , and for all addresses in the Salt Lake Valley. During the winter of 1847, an outbreak of measles killed many of the Shoshone in the area. The Shoshone saved the pioneers when they taught them to eat

12947-598: The territorial legislature passed the Act in Relation to Service and the Act for the relief of Indian Slaves and Prisoners formally legalizing slavery in the territory. On June 19, 1862, during the American Civil War , Congress prohibited slavery in all US territories. Explorer, ethnologist, and author Richard Francis Burton traveled by coach in the summer of 1860 to document life in Great Salt Lake City. He

13068-521: The time between the end of the youngest of the deep pre-Bonneville lakes (the Little Valley lake cycle, about 150,000 years ago) and the initial rise of Lake Bonneville about 30,000 years ago, the lake would have resembled modern Great Salt Lake in surface area and depth. A short episode of slightly higher lake levels during the Cutler Dam lake cycle occurred about 60,000 years ago; at this time

13189-594: The valley. Many consider this some of the most desirable real estate in the valley. In addition to larger centers like Sugar House and Downtown, Salt Lake City contains several smaller neighborhoods, each named after the closest major intersection. Two examples are the 9th and 9th (at the intersection of 900 East and 900 South Streets) and 15th & 15th (at the intersection of 1500 East and 1500 South Streets) neighborhoods. These areas are home to foot-traffic friendly, amenities-based businesses such as art galleries, clothing retail, salons, restaurants and coffee shops. During

13310-423: The venues in Salt Lake City and Park City , and Rotary International chose the city as the host site of their 2007 convention, which was the single largest gathering in Salt Lake City since the 2002 Winter Olympics. The U.S. Volleyball Association convention in 2005 drew 39,500 attendees. In 2020, the city experienced a 5.7 magnitude earthquake , protests against the killing of Bernardo Palacios-Carbajal , and

13431-541: The vicinity of Salt Lake and the valleys to the west. The land was treated by the United States as public domain; no aboriginal title by the Northwestern Shoshone was ever ceded or relinquished by treaty with the United States. The first explorer of European descent in the Salt Lake area was likely Jim Bridger in 1825, although others had been in Utah earlier, including some who traveled as far north as

13552-495: The water level in the terminal lake to rise until it finds an outlet, breaking the enclosed endorheic hydrological system's geographical barrier and opening it to the surrounding terrain. The Black Sea was likely such a lake, having once been an independent hydrological system before the Mediterranean Sea broke through the terrain separating the two. Lake Bonneville was another such lake, overflowing its basin in

13673-514: The water while the lake existed, but when the lake evaporated and the water load was considerably reduced, the crust beneath the lake basin rebounded. As a result, the elevation of the Bonneville shoreline is 243 ft (74 m) higher in the Lakeside Mountains, elevation 5,335 ft (1,626 m), west of the Great Salt Lake near the center of the Lake Bonneville water load, than at Red Rock Pass, 5,092 ft (1,552 m), where

13794-582: The way for statehood in 1896, when Salt Lake City became the state capital. The First Transcontinental Railroad was completed in 1869 at Promontory Summit on the north side of the Great Salt Lake. A railroad was connected to the city from the Transcontinental Railroad in 1870, making travel less burdensome. Mass migration of different groups followed. Ethnic Chinese (who had laid most of the Central Pacific railway) established

13915-604: The western portion of 300 South, named "Adam Galvez Street" (for a local Marine corporal killed in action) or others honoring Rosa Parks , Martin Luther King Jr. , César Chávez , Harvey Milk , and John Stockton . These honorary names appear only on street signs and cannot be used in postal addresses. In the Avenues neighborhood , north–south streets are given letters of the alphabet, and east–west streets are numbered in 2.5-acre (1.0 ha) blocks, smaller than those in

14036-407: The work of many people, details of the paleolake, including its history and connections to global environmental systems, will be pursued for many years to come. Lake Bonneville began to rise from elevations similar to those of modern Great Salt Lake about 30,000 years ago. During its transgressive phase in the closed basin (an endorheic basin ), lake level oscillated because of changes in climate but

14157-454: Was a rise of Great Salt Lake about 49 ft (15 m) higher than modern average levels, which culminated 11,600 years ago. But a mappable shoreline of the Gilbert episode has not been recognized. The shorelines of Lake Bonneville have been warped by isostatic processes, as was recognized by Gilbert and extensively studied since Gilbert's day. Earth's crust subsided beneath the weight of

14278-520: Was dropped from the city's name. Immigration of international members of the Church of Jesus Christ of Latter-day Saints (LDS Church), mining booms , and the construction of the first transcontinental railroad brought economic growth, and the city was nicknamed "The Crossroads of the West". It was traversed by the Lincoln Highway , the first transcontinental highway, in 1913. Two major cross-country freeways, I-15 and I-80 , now intersect in

14399-528: Was from City Creek . Subsequent development of water resources was from successively more southern streams flowing from the mountains east of the city. Some old irrigation ditches are still visible in the eastern suburbs, or are still marked on maps, years after they were gone. There are still some canals that deliver water as required by water rights. Many lots, in Salt Lake City and surrounding areas, have irrigation water rights attached to them. Local water systems, in particular Salt Lake City Public Utilities, have

14520-467: Was granted unprecedented access during his three-week visit, including audiences with Brigham Young and other contemporaries of Joseph Smith. The records of his visit include sketches of early city buildings, a description of local geography and agriculture, commentary on its politics and social order, essays, speeches, and sermons from Young, Isaac Morley, George Washington Bradley and other leaders, and snippets of everyday life such as newspaper clippings and

14641-544: Was more than 980 ft (300 m) deep and almost 20,000 sq mi (51,000 km) in surface area, it covered almost as much area as modern Lake Michigan although its shoreline was more complex with many islands and peninsulas . Great Salt Lake , Utah Lake , and Sevier Lake are the largest post-Bonneville lakes in the Bonneville basin. Lake Bonneville was not a proglacial lake although it formed between about 30,000 and 13,000 years ago, when glaciers at many places on Earth were expanded relative to today during

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