The Fresno River ( Spanish for "ash tree") is a river in Central California and a major tributary of the San Joaquin River . It runs approximately 83 miles (134 km) from the Sierra Nevada Range to the San Joaquin River if measured from the source of Rainier Creek, near Raymond Mountain in Yosemite National Park. Although called the 'Fresno' River, it is one of the largest and longest river systems in Madera County.
86-522: Headwaters: The Fresno River forms in the Oakhurst valley, near the western border of city limits. The primary source of the Fresno River is Lewis Fork Creek, which gathers water far northeastward into the hills adjacent to Fish Camp. Lewis Fork Creek itself has a major tributary from Nelder Creek, coming from the lower-montane Nelder Grove area and Speckerman Mountain (7,600 ft). The other major tributary
172-575: A Dolbeer single spool donkey , a steam-powered winch, made the work easier in later years. Due to a lack of water in the grove, a 1 mi (1.6 km) long gravity tramway was built to transport the lumber to the Soquel log flume , which then transported it 52 mi (84 km) to the Madera lumber yards, before it finally reached the national market via the Southern Pacific Railroad . By 1897,
258-521: A foreman working for Sacramento pioneer John Sutter , found shiny metal in the tailrace of a lumber mill Marshall was building for Sutter on the American River . Rumors soon started to spread and were confirmed in March 1848 by San Francisco newspaper publisher and merchant Samuel Brannan . Brannan strode through the streets of San Francisco, holding aloft a vial of gold, shouting "Gold! Gold! Gold from
344-553: A portion of the area, a triangle whose vertices are Reno, Nevada ; Fresno, California ; and Las Vegas, Nevada , has been dubbed the " Nevada Triangle ", in reference to the Bermuda Triangle . Some counts put the number of crashes in the triangle at 2,000, including millionaire and record-breaking flyer Steve Fossett . Hypotheses that the crashes are related in some way to the United States Air Force 's Area 51 , or to
430-448: A powerful stream or jet of water at gold-bearing gravel beds. It is estimated that by the mid-1880s, 11 million troy ounces (340 metric tons) of gold (worth approximately US$ 16 billion in 2020 prices) had been recovered by "hydraulicking". A consequence of these extraction methods was that large amounts of gravel, silt , heavy metals , and other pollutants were washed into streams and rivers. As of 1999 , many areas still bear
516-682: A publication of his photographs under the title Parmelian Prints of the High Sierras , commented, "The name Sierra is already a plural. To add an s is a linguistic, Californian, and mountaineering sin." The Sierra Nevada lies primarily in Central and Eastern California , with the Carson Range , a small but historically important spur, extending into Nevada. West-to-east, the Sierra Nevada's elevation increases gradually from 500 feet (150 m) in
602-482: A result, the natural riverbed has many gaps in it, which are now connected by man-made canals. At Road 17, the natural riverbed has been modified to divert most flows into a manmade canal, which leads to the Eastside Bypass . Water can also be allowed to continue flowing down the main river channel (north of the man-made canal), but that water now ends up in the bypass as well. Once in the bypass, water can exit via
688-501: A short period, and the lightning can start fires. Summer high temperatures average 42–90 °F (6–32 °C). Winters are comparatively mild, and the temperature is usually only just low enough to sustain a heavy snowpack. For example, Tuolumne Meadows , at 8,600 feet (2,600 m) elevation, has winter daily highs about 40 °F (4 °C) with daily lows about 10 °F (−12 °C). The growing season lasts 20 to 230 days, strongly dependent on elevation. The highest elevations of
774-543: A small channel at a diversion dam and continue west along the natural riverbed the rest of the way to the San Joaquin River. Between the Eastside Bypass and the San Joaquin River, the riverbed (which is almost always dry) has been subject to straightening, but more or less follows its natural course. In addition to many small unnamed streams, the Fresno River receives the water from the following streams: Towns along
860-535: A strong correlation between fire severity and the density, growth, and dominance of new giant sequoia seedlings. The successful natural regeneration of these seedlings provides hope for restoring other groves with large burn scars. In July 2022, the U.S. Forest Service authorized an expedited Emergency Response plan to reduce combustible materials in Nelder Grove. Officials aim to replicate the success of wildfire prevention efforts seen in nearby Mariposa Grove during
946-447: Is Mount Lyell (13,120 ft or 3,999 m). The Sierra rises to almost 14,000 feet (4,300 m) with Mount Humphreys near Bishop, California . Finally, near Lone Pine , Mount Whitney is at 14,505 feet (4,421 m), the highest point in the contiguous United States . South of Mount Whitney, the elevation of the range quickly dwindles. The crest elevation is almost 10,000 feet (3,000 m) near Lake Isabella , but south of
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#17328525718631032-597: Is China Creek, which acts as a drainage for the ridges around the Teaford Saddle. After Oakhurst, the Fresno River runs northwest until it reaches the end of the sloped valley at the calm topography of the Fresno Flats. There the valley and hills start to meet, and the Fresno crosses Potter Ridge at around 2,000 feet. Foothills: As the river carves its way through the ridge, it creates several windy canyons and gulches. This area
1118-611: Is a 1,540-acre (6.2 km ) tract containing 60 mature Giant Sequoia ( Sequoiadendron giganteum ) trees, the largest concentration of giant sequoias in the Sierra National Forest. The grove also contains several historical points of interest, including pioneer cabins, giant sequoia stumps left by 19th-century loggers, and the site where the Forest King exhibition tree was felled in 1870 for display. Before European Americans arrived, Nelder Grove had 400 mature sequoias, but
1204-456: Is either protected from development or strictly managed. The mountain range is home to three National Parks – Yosemite , Kings Canyon , and Sequoia – and two national monuments – Devils Postpile and Giant Sequoia . Ten national forests span much of the mountain range's remaining area. Within these national parks, monuments, and forests lie 26 wilderness areas , which together protect 15.4% of
1290-531: Is higher in the east. A list of biotic zones, and corresponding elevations, is presented below: Archaeological excavations placed Martis people of Paleo-Indians in northcentral Sierra Nevada during the period of 3,000 BCE to 500 CE. The earliest identified sustaining indigenous people in the Sierra Nevada were the Northern Paiute tribes on the east side, with the Mono tribe and Sierra Miwok tribe on
1376-743: Is the source of much of the sedimentary rock in California. In the Cretaceous , a subduction zone formed at the edge of the continent. This means that an oceanic plate started to dive beneath the North American Plate . Magma, formed through the subduction of the ancient Farallon Plate , rose in plumes ( plutons ) deep underground, their combined mass forming what is called the Sierra Nevada batholith . These plutons formed at various times, from 115 Ma to 87 Ma. The earlier plutons formed in
1462-686: Is used to divert water into the Big Main Canal. The dam was built by the United States Bureau of Reclamation in 1964 and is operated by the Madera Irrigation District. From this point, the river is normally dry. The only time water is released past here is when water levels are high enough to spill over the dam. West of Road 17 in Madera County , the Fresno River's natural riverbed has been subject to much intervention by man and as
1548-458: The Basin and Range Province . As this andesitic volcanism began waning about five million years ago, the rivers were able to begin eroding away the 100s of meters of volcanic deposits and resume the incision that had been halted by the first period of volcanism. Some studies have argued that this recent incision is a sign of recent tectonic uplift. Other geologists claim that the elevations of many of
1634-634: The Carson River runs into Carson Sink , the Walker River into Walker Lake ; Rush , Lee Vining and Mill Creeks flow into Mono Lake ; and the Owens River into dry Owens Lake . Although none of the eastern rivers reach the sea, many of the streams from Mono Lake southwards are diverted into the Los Angeles Aqueduct which provides water to Southern California . The height of the mountains in
1720-537: The Central Valley to more than 14,000 feet (4,300 m) atop the highest peaks of its crest 50 to 75 miles (80 to 121 km) to the east. The east slope forms the steep Sierra Escarpment . Unlike its surroundings, the range receives a substantial amount of snowfall and precipitation due to orographic lift . The Sierra Nevada's irregular northern boundary stretches from the Susan River and Fredonyer Pass to
1806-590: The Nevadan orogeny , granite formed deep underground. The range started to uplift less than five million years ago, and erosion by glaciers exposed the granite and formed the light-colored mountains and cliffs that make up the range. The uplift caused a wide range of elevations and climates in the Sierra Nevada, which are reflected by the presence of five life zones (areas with similar plant and animal communities). Uplift continues due to faulting caused by tectonic forces, creating spectacular fault block escarpments along
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#17328525718631892-587: The North Fork Feather River . It represents where the granitic bedrock of the Sierra Nevada dives below the southern extent of Cenozoic igneous surface rock from the Cascade Range . It is bounded on the west by California 's Central Valley , on the east by the Basin and Range Province , and on the southeast by the Mojave Desert . The southern boundary is at Tehachapi Pass . Physiographically,
1978-516: The San Joaquin Valley to the rest of the state in the 1870s. This facilitated the nationwide distribution of lumber. In addition, technological advancements, such as the shay locomotive and the v-shaped log flume , made it easier to transport lumber across mountainous terrain. The tourism potential of the Sierra Nevada was recognized early in the European history of the range. Yosemite Valley
2064-526: The United States started to move to California via Sonora and Walker Passes . In the winter of 1844, Lt. John C. Frémont , accompanied by Kit Carson , was the first European American to see Lake Tahoe . The Frémont party camped at 8,050 ft (2,450 m). The California Gold Rush began at Sutter's Mill , near Coloma , in the western foothills of the Sierra. On January 24, 1848, James W. Marshall,
2150-511: The endorheic basin of Tulare Lake , which rarely overflows into the San Joaquin during wet years. The eastern slope watershed of the Sierra is much narrower; its rivers flow out into the endorheic Great Basin of eastern California and western Nevada . From north to south, the Susan River flows into intermittent Honey Lake , the Truckee River flows from Lake Tahoe into Pyramid Lake ,
2236-441: The wildfire ’s intensity to several factors, including the historic 2011–2017 California drought , which caused significant dieback and stress in giant sequoias. Additionally, a century of fire suppression had led to heavy fuel buildup on the forest floor and dense understory growth, making the blaze more destructive. Forest monitors had warned of such risks for decades. As early as the 1960s, Madera County discussed acquiring
2322-511: The 1849 gold rush , filed a homestead claim for 165 acres within the grove in 1874 and built a cabin near its largest tree the following year. Muir wrote about Nelder and the grove for The Atlantic Monthly in 1878, later including it in his book Our National Parks . Since '49 he had wandered over most of the Sierra, sinking innumerable prospect holes like a sailor making soundings, digging new channels for streams, sifting gold-sprinkled boulder and gravel beds with unquenchable energy, life's noon
2408-532: The 2022 Washburn Fire . As part of the initiative, 42 mature giant sequoias now have a 100-foot protective buffer. Sierra Nevada (U.S.) The Sierra Nevada ( / s i ˌ ɛr ə n ɪ ˈ v æ d ə , - ˈ v ɑː d -/ see- ERR -ə nih- VA(H)D -ə ) is a mountain range in the Western United States , between the Central Valley of California and the Great Basin . The vast majority of
2494-716: The American River!" On August 19, 1848, the New York Herald was the first major newspaper on the East Coast to report the discovery of gold. On December 5, 1848, President James Polk confirmed the discovery of gold in an address to Congress . Soon, waves of immigrants from around the world, later called the "forty-niners", invaded the Gold Country of California or "Mother Lode". Miners lived in tents, wood shanties, or deck cabins removed from abandoned ships. Wherever gold
2580-473: The Fresno River include: There are numerous crossings over the Fresno River in Madera and Merced Counties. Crossings are listed here beginning at the source and working downstream: Nelder Grove Nelder Grove , located in the western Sierra Nevada within the Sierra National Forest in Madera County, California , is a Giant sequoia grove that was formerly known as Fresno Grove. The grove
2666-769: The Pacific Ocean at San Francisco . The northern third of the western Sierra is part of the Sacramento River watershed (including the Feather , Yuba , and American River tributaries), and the middle third is drained by the San Joaquin River (including the Mokelumne , Stanislaus , Tuolumne , and Merced River tributaries). The southern third of the range is drained by the Kings , Kaweah , Tule , and Kern rivers, which flow into
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2752-695: The Park in 1906. In the same year, Sequoia National Park was formed to protect the Giant Sequoia: all logging of the Sequoia ceased at that time. In 1903, the city of San Francisco proposed building a hydroelectric dam to flood Hetch Hetchy Valley . The city and the Sierra Club argued over the dam for 10 years, until the U.S. Congress passed the Raker Act in 1913 and allowed dam building to proceed. O'Shaughnessy Dam
2838-431: The San Joaquin River, just north of Highway 152 . Hidden Dam is the only major storage dam on the Fresno River. The dam forms Hensley Lake , a 90,000 acre-foot (110,000,000 m) reservoir . The United States Army Corps of Engineers built the earth-fill dam, which was completed in 1974. Its primary purpose is flood control, but it is also used to regulate flows for irrigation and groundwater recharge . In 1978,
2924-468: The Sierra Nevada increases gradually from north to south. Between Fredonyer Pass and Lake Tahoe, the peaks range from 5,000 feet (1,500 m) to more than 9,000 feet (2,700 m). The crest near Lake Tahoe is roughly 9,000 feet (2,700 m) high, with several peaks approaching the height of Freel Peak (10,881 ft or 3,317 m). Farther south, the highest peak in Yosemite National Park
3010-552: The Sierra Nevada is influenced by the Mediterranean climate of California. During the fall, winter and spring, precipitation in the Sierra ranges from 20 to 80 in (510 to 2,030 mm) where it occurs mostly as snow above 6,000 ft (1,800 m). Precipitation is highest on the central and northern portions of the western slope between 5,000 and 8,000 feet (1,500 and 2,400 m) elevation, due to orographic lift . Above 8,000 feet (2,400 m), precipitation diminishes on
3096-499: The Sierra Nevada started in the early 1800s, when settlers relied on hand tools and ox-teams. Before the California Gold Rush, the industry was relatively small, and most of the lumber used in the state was imported. However, as the demand for lumber to support the mining industry increased, logging became a major industry in the region. Initially, most of the lumber produced in California was used in mining. The Comstock Lode
3182-431: The Sierra have an alpine climate . The Sierra Nevada snowpack is the major source of water and a significant source of electric power generation in California. Many reservoirs were constructed in the canyons of the Sierra throughout the 20th century, Several major aqueducts serving both agriculture and urban areas distribute Sierra water throughout the state. However, the Sierra casts a rain shadow , which greatly affects
3268-646: The Sierra is a section of the Cascade–Sierra Mountains province, which in turn is part of the larger Pacific Mountain System physiographic division. The California Geological Survey states that "the northern Sierra boundary is marked where bedrock disappears under the Cenozoic volcanic cover of the Cascade Range." The range is drained on its western slope by the Central Valley watershed, which discharges into
3354-493: The Sierra's 63,118 km (24,370 sq mi) from logging and grazing. The United States Forest Service and the Bureau of Land Management currently control 52% of the land in the Sierra Nevada. Logging and grazing are generally allowed on land controlled by these agencies, under federal regulations that balance recreation and development on the land. The California Bighorn Sheep Zoological Area near Mount Williamson in
3440-523: The Sierra. The combination of river and glacier erosion exposed the uppermost portions of the plutons emplaced millions of years before, leaving only a remnant of metamorphic rock on top of some Sierra peaks. Extension of the Basin and Range continues today, leading to downdropping of crustal blocks just east of the Sierra Nevada during large earthquakes, such as the Lone Pine earthquake of 1872. The climate of
3526-630: The Tuolumne and Merced River drainage. The group may have been the first non-indigenous people to see Yosemite Valley . The Walker Party probably visited either the Tuolumne or Merced Groves of giant sequoia , becoming the first non-indigenous people to see the giant trees, but journals relating to the Walker party were destroyed in 1839, in a print shop fire in Philadelphia. Starting in 1841, emigrants from
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3612-444: The activities of extra-terrestrial aliens , have no evidence to support them. The Sierra Nevada is divided into a number of biotic zones , each of which is defined by its climate and supports a number of interdependent species. Life in the higher elevation zones adapted to colder weather, and to most of the precipitation falling as snow. The rain shadow of the Sierra causes the eastern slope to be warmer and drier: each life zone
3698-496: The area around Yosemite National Park and what would become Kings Canyon National Park . James S. Hutchinson , a noted mountaineer, climbed the Palisades (1904) and Mount Humphreys (1905). By 1912, the USGS published a set of maps of the Sierra Nevada, and the era of exploration was over. Logging in the Sierra Nevada has significantly impacted the landscape. The logging industry in
3784-562: The area close to the mill had been completely logged, and the last sequoia in Nelder Grove was cut. The Nelder Grove is home to several giant sequoias that are notable for their size and history. Nelder Grove is less accessible compared to the nearby Mariposa Grove , which can be easily reached by paved roads and shuttle buses. Under favorable conditions, visitors can reach Nelder Grove within two hours from Fresno by heading north, or from Yosemite National Park by traveling south on Highway 41 to Road 632, also known as Sky Ranch Road. However,
3870-632: The area served as a seasonal hub for the Mono and Miwok tribes during their trans-Sierra travels. Other tribes, including the Dumma, Heuchi, Chuckchansi , Chowchillas, Paiute , Kechayi , and Dalinchi, also traveled through the region. Artifacts such as mortar holes, which were used to grind acorns into flour, are evidence of this longstanding human presence. In July 1858, conservationist Galen Clark formally discovered Nelder Grove, naming it Fresno Grove due to its location in Fresno County and proximity to
3956-484: The border of the Central Valley. At one of the widest sections of the river, Hidden Dam was constructed and Hensley Lake created. Now a popular recreation spot, the lake covers a considerable area when full from late spring snow melts. Central Valley: Below the lake, the river flows southwest to Madera , then west to the Eastside Bypass . The river exits the bypass then flows generally northwest to its confluence with
4042-521: The climate and ecology of the central Great Basin . This rain shadow is largely responsible for Nevada being the driest state in the United States. Precipitation varies substantially from year to year. It is not uncommon for some years to receive precipitation totals far above or below normal. The height of the range and the steepness of the Sierra Escarpment, particularly at the southern end of
4128-631: The crest and north of 37.2°N. In the Triassic and into the Jurassic , an island arc collided with the west coast of North America and raised a chain of volcanoes, in an event called the Nevadan orogeny . Nearly all subaerial Sierran Arc volcanoes have since disappeared; their remains were redeposited during the Great Valley Sequence and the subsequent Cenozoic filling of the Great Valley, which
4214-566: The dirt road leading into the grove can be difficult, with muddy and rutted conditions, and is often impassable due to deep snow during the winter months. The Shadow of the Giants National Recreation Trail, located in Nelder Grove, was built in 1965 and designated a National Recreation Trail in 1978. However, the Railroad Fire in 2015 destroyed the trail’s informational panels, bridges, and other infrastructure. As of 2022,
4300-407: The eastern edge of the southern Sierra. The Sierra Nevada has played an important role in the history of California and the United States. The California gold rush occurred in the western foothills from 1848 through 1855. Due to its inaccessibility, the range was not fully explored until 1912. Used in 1542 by Juan Rodríguez Cabrillo to describe a Pacific Coast Range ( Santa Cruz Mountains ),
4386-461: The grove to bypass federal restrictions on timber cutting and prescribed burns in the Sierra National Forest . Despite these warnings, no major preventive actions were taken before the Railroad Fire. “We’d better reduce the fuels, or we’re going to lose this resource,” Paul Rich, a retired 33-year veteran of the U.S. Forest Service, warned in 2000. Following the Railroad Fire , researchers noted
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#17328525718634472-687: The headwaters of the Fresno River . However, a later discovery in Robert Eccleston 's diary revealed that the Mariposa Battalion had already passed through the grove in 1851 during the Mariposa War , a discovery that had not been publicized at the time. The grove is now named for John A. Nelder, known as the "Hermit of the Fresno Forest" by John Muir . Nelder, who came to California during
4558-406: The highest peak in the range. In 1873, Mount Whitney was climbed for the first time by 3 men from Lone Pine, California, on a fishing trip. From 1892 to 1897 Theodore Solomons made the first attempt to map a route along the crest of the Sierra. Other people finished exploring and mapping the Sierra. Bolton Coit Brown explored the Kings River watershed in 1895–1899. Joseph N. LeConte mapped
4644-456: The lake was opened to the public for recreation and is a popular boating and fishing destination for locals. Below Hidden Dam, the Fresno River provides water to Madera Lake via an unnamed distributary. Excess flow from the lake is returned to the Fresno River by the lake's dam. Further downstream, on the northeast edge of Madera, is the John Franchi Diversion Dam , a 15-foot (4.6 m) high, 263-foot (80 m)-wide earth and steel dam that
4730-442: The lake, the peaks reach only a modest 8,000 feet (2,400 m). There are several notable geographical features in the Sierra Nevada: Communities in the Sierra Nevada include Paradise , South Lake Tahoe , Truckee , Grass Valley , Lee Vining , Mammoth Lakes , Sonora , Nevada City , Placerville , Pollock Pines , Portola , Auburn , Colfax and Kennedy Meadows . Much of the Sierra Nevada consists of federal lands and
4816-511: The land to the U.S. Forest Service , placing the grove under federal protection. Nelder Grove, a montane forest in the Sierra Nevada, is primarily composed of giant sequoias along with other tree species such as ponderosa pine , white fir , and California incense-cedar . The sequoias in Nelder Grove exhibit a low level of genetic diversity, unusual even for their species. Despite its proximity, just 4.3 mi (6.9 km) from Mariposa Grove , there's no evidence of genetic exchange between
4902-620: The largest tree in the world by volume; Lake Tahoe , the largest alpine lake in North America; Mount Whitney at 14,505 ft (4,421 m), the highest point in the contiguous United States ; and Yosemite Valley sculpted by glaciers from one-hundred-million-year-old granite , containing high waterfalls . The Sierra is home to three national parks , twenty-six wilderness areas, ten national forests, and two national monuments. These areas include Yosemite , Sequoia , and Kings Canyon National Parks , as well as Devils Postpile National Monument . More than one hundred million years ago during
4988-435: The late 1800s at nearby Bildeo Meadow, were moved to Nelder Grove in the 1980s under a project funded by the National Historic Preservation Act . They are among the oldest structures in the Sierra National Forest. In September 2017, the Railroad Fire swept through much of Nelder Grove, destroying 38 of its giant sequoias and leading to the permanent closure of the popular Shadow of the Giants trail. Experts attribute
5074-429: The late 1800s due to several factors. The Timber and Stone Act of 1878 allowed individuals to claim ownership of old-growth timber tracts, which were later consolidated under joint-stock companies , such as those founded by Midwestern lumber magnates. These companies had the financial resources to transport timber from remote locations and build sawmills near the tracks of the Southern Pacific railroad which connected
5160-455: The late 1800s, the logging industry moved westward due to the depletion of white pine forests in the upper Midwest. This shift was encouraged by the positive portrayal of the Sierra Nevada as a promising timber region. In 1859, Horace Greely marveled, "I never saw anything so much like good timber in the course of any seventy-five miles' travel as I saw in crossing the Sierra Nevada." The logging industry experienced significant growth in
5246-422: The late 19th century. The Madera Flume and Trading Company logged 277 mature sequoias, each measuring over four feet in diameter, between 1880 and 1892. Many of the surrounding trees, including sugar pines , ponderosa pines , white firs , and incense-cedars were also clearcut . The logging process in the grove was grueling, with horse and oxen teams hauling heavy wagons of logs to the mill. The arrival of
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#17328525718635332-412: The meanwhile passing unnoticed into late afternoon shadows. Then, health and gold gone, the game played and lost, like a wounded deer creeping into this forest solitude, he awaits the sundown call. John Nelder was killed in 1889 when a fire consumed his cabin. His son inherited his estate and deeded it to the Madera Flume and Trading Company in 1892. Nelder Grove was subjected to extensive logging in
5418-417: The miners, provoking counter-attacks on native villages. The Native Americans, out-gunned, were often slaughtered. The Gold Rush populated the western foothills of the Sierra Nevada, but even by 1860, most of the Sierra was unexplored. The state legislature authorized the California Geological Survey to officially explore the Sierra (and survey the rest of the state). Josiah Whitney was appointed to head
5504-440: The modern rivers flowing down the range are only 100–300 meters (300–1,000 ft) lower than their ancient counterparts from 30–40 million years ago and the overall elevation and bedrock topography of the northern Sierra Nevada has changed little since at least 30–40 million years ago. About 2.5 Ma, the Earth's climate cooled, and ice ages started. Glaciers carved out characteristic U-shaped canyons throughout
5590-472: The mountains were amongst a group led by fur trapper Jedediah Smith , crossing north of the Yosemite area in May 1827, at Ebbetts Pass . In 1833, a subgroup of the Bonneville Expedition led by Joseph Reddeford Walker was sent westward to find an overland route to California . Eventually the party discovered a route along the Humboldt River across present-day Nevada , ascending the Sierra Nevada, starting near present-day Bridgeport and descending between
5676-409: The mountains. Washo and Maidu were also in this area prior to the era of European exploration and displacement. American exploration of the mountain range started in 1827. Although prior to the 1820s there were Spanish missions , pueblos (towns), presidios (forts), and ranchos along the coast of California, no Spanish explorers visited the Sierra Nevada. The first Americans to visit
5762-399: The northern Sierran valleys with volcanic deposits. These pyroclastic flows, which continued for about 10 million years, were followed by andesitic lahars which nearly completely buried the northern Sierran landscape such that only the tallest peaks emerged above a volcanic plain. This second period of volcanism appears to have been triggered by crustal extension associated with extension of
5848-399: The oldest being metasedimentary rocks from the Cambrian in the Mount Morrison region. These dark-colored hornfels , slates , marbles , and schists are found in the western foothills (notably around Coarsegold , west of the Tehachapi Pass ) and east of the Sierra Crest. The earliest granite of the Sierra started to form in the Triassic period. This granite is mostly found east of
5934-413: The plural ( Smokies , Rockies , Cascades , etc.), since Sierra is already pluralized in its native language, some locals who live in "the Sierra" are not hesitant to admonish those who refer to the area as "the Sierras". However, there are historical and literary references that use the plural, such as the 1871 collection of Joaquin Miller poems, Songs of the Sierras . Ansel Adams , in response to
6020-427: The population has experienced several steep declines since then. About 70% of the mature trees were cut during the late 19th century timber era. Despite federal protection in the 20th century, the sequoias have been further impacted by decades of fire exclusion, with 38 trees lost in the Railroad Fire of 2017. Today, only 60 mature specimens remain in the grove. In 1928, the Madera Sugar Pine Company transferred
6106-456: The range lies in the state of California , although the Carson Range spur lies primarily in Nevada . The Sierra Nevada is part of the American Cordillera , an almost continuous chain of mountain ranges that forms the western "backbone" of the Americas. The Sierra runs 400 mi (640 km) north-south, and its width ranges from 50 mi (80 km) to 80 mi (130 km) across east–west. Notable features include General Sherman ,
6192-420: The range, produces a wind phenomenon known as the "Sierra Rotor". This is a horizontal rotation of the atmosphere just east of the crest of the Sierra, set in motion as an effect of strong westerly winds. Because of the large number of airplanes that have crashed in the Sierra Nevada, primarily due to the complex weather and atmospheric conditions such as downdrafts and microbursts caused by geography there,
6278-554: The scars of hydraulic mining, since the resulting exposed earth and downstream gravel deposits do not support plant life. It is estimated that by 1855, at least 300,000 gold-seekers, merchants, and other immigrants had arrived in California from around the world. The huge numbers of newcomers brought by the Gold Rush drove Native Americans out of their traditional hunting, fishing and food-gathering areas. To protect their homes and livelihood, some Native Americans responded by attacking
6364-454: The southern Sierra was established to protect the endangered Sierra Nevada bighorn sheep . Starting in 1981, hikers were unable to enter the Area from May 15 through December 15, in order to protect the sheep. As of 2010, the restriction has been lifted and access to the Area is open for the whole year. The earliest rocks in the Sierra Nevada are metamorphic roof pendants of Paleozoic age,
6450-425: The survey. Men of the survey, including William H. Brewer , Charles F. Hoffmann and Clarence King , explored the backcountry of what would become Yosemite National Park in 1863. In 1864, they explored the area around Kings Canyon . In 1869, John Muir started his wanderings in the Sierra Nevada range, and in 1871, King was the first to climb Mount Langley , mistakenly believing he had summited Mount Whitney ,
6536-490: The term "Sierra Nevada" was a general identification of less familiar ranges toward the interior. In 1776, Pedro Font 's map applied the name to the range currently known as the Sierra Nevada. The literal translation is "snowy mountains", from sierra "a range of mountains", 1610s, from Spanish sierra "jagged mountain range", lit. "saw", from Latin serra "a saw"; and from fem. of Spanish nevado "snowy". While many mountain ranges are unanimously referred to in
6622-429: The trail remains closed and overgrown with brush. Additionally, there is a Sierra National Forest campground located at the Nelder Grove which serves as a spot for camping and outdoor activities. The Nelder Grove Interpretive Center features several artifacts from the area's logging era, including two restored log cabins and replicas of traditional logging chutes. These cabins, originally constructed by pioneers in
6708-496: The two populations. This genetic isolation heightens Nelder Grove's vulnerability to climate change , underscoring its conservation importance. The grove also supports rare plant species, including the mountain-lady slipper orchid and the veined water lichen . Its wildlife includes black bear , mule deer , long-tailed weasel , raccoon , gray squirrel , chipmunk , and flying squirrels . Human occupation of Nelder Grove dates back approximately 15,000 years. Historically,
6794-424: The water from an entire river into a sluice alongside the river, and then dig for gold in the newly exposed river bottom. By 1853, most of the easily accessible gold had been collected, and attention turned to extracting gold from more difficult locations. Hydraulic mining was used on ancient gold-bearing gravel beds on hillsides and bluffs in the gold fields. In hydraulic mining, a high-pressure hose directed
6880-523: The western half of the Sierra, while the later plutons formed in the eastern half of the Sierra. At this time, the Sierra Nevada formed the western ramp of a high plateau to the east, the Nevadaplano . During this period, rivers cut deep canyons into the range, generating topographic relief similar to the modern Sierra Nevada. This period of incision was halted approximately 30 million years ago by vast outpourings of pyroclastic flows from Nevada which filled
6966-500: The western side, and the Kawaiisu and Tübatulabal tribes in the southern Sierra. Today, some historic intertribal trade route trails over mountain passes are known artifact locations, such as Duck Pass with its obsidian arrowheads . The California and Sierra Native American tribes were predominantly peaceful, with occasional territorial disputes between the Paiute and Sierra Miwok tribes in
7052-501: The western slope up to the crest, since most of the precipitation has been wrung out at lower elevations. Most parts of the range east of the crest are in a rain shadow , and receive less than 25 inches of precipitation per year. While most summer days are dry, afternoon thunderstorms are common, particularly during the North American Monsoon in mid and late summer. Some of these summer thunderstorms drop over an inch of rain in
7138-463: Was a major center for logging, with operations supplying lumber for the construction of mine structures, such as tunnels, shafts, and buildings, as well as fuel for the mines. Dan DeQuille observed in 1876, "the Comstock Lode may truthfully be said to be the tomb of the forests of the Sierra. Millions upon millions of feet of lumber are annually buried in the mines, nevermore to be resurrected.” In
7224-473: Was discovered, hundreds of miners would collaborate to put up a camp and stake their claims. Because the gold in the California gravel beds was so richly concentrated, the early forty-niners simply panned for gold in California's rivers and streams. However, panning cannot take place on a large scale, and miners and groups of miners graduated to more complex placer mining. Groups of prospectors would divert
7310-440: Was first protected by the federal government in 1864. The Valley and Mariposa Grove were ceded to California in 1866 and turned into a state park. John Muir perceived overgrazing by sheep and logging of giant sequoia to be a problem in the Sierra. Muir successfully lobbied for the protection of the rest of Yosemite National Park: Congress created an Act to protect the park in 1890. The Valley and Mariposa Grove were added to
7396-537: Was mildly popular during the Central Sierra era of the Gold Rush, throughout the early to mid-1850s. Past the ridge, the Fresno River descends the foothills mildly. The harsh canyons ease up and start to widen. It crosses Road 415 at around 1,000 feet elevation, an intersection known as the Fresno Crossing. Hensley Lake: Once the Fresno River gets out of the foothills, it creates a gently sloped river valley down to
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