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Arroyo Seco (Alameda County)
Arroyo Seco is an U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map, accessed March 15, 2011 watercourse in Alameda County, California, that traverses through the city of Livermore, emptying into Arroyo Las Positas. ''Arroyo Seco'' means "dry stream" in Spanish. Arroyo Seco lies above the Arroyo Seco watershed, which includes the eastern part of the city of Livermore and also the Sandia National Laboratory. The Mocho Subbasin is the largest of the subbasins in the Livermore Valley watershed. This subbasin is bounded to the west by the Livermore Fault Zone and to the east by the Tesla Fault. Some groundwater flow occurs across these fault boundaries, but flows are discontinuous below a depth of across the Tesla Fault and south of the Arroyo Mocho channel across the Livermore Fault. A number of threatened and endangered species reside in this watershed. See also *Mocho Subbasin The Mocho Subbasin is the largest of the gro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alameda County, California
Alameda County ( ) is a county located in the U.S. state of California. As of the 2020 census, the population was 1,682,353, making it the 7th-most populous county in the state and 21st most populous nationally. The county seat is Oakland. Alameda County is in the San Francisco Bay Area, occupying much of the East Bay region. The Spanish word ''alameda'' means either "a grove of poplars...or a tree lined street." The name was originally used to describe the Arroyo de la Alameda. The willow and sycamore trees along the banks of the river reminded the early Spanish explorers of a road lined with trees. Although a strict translation to English might be "Poplar Grove Creek," the name of the principal stream that flows through the county is now simply "Alameda Creek." Alameda County is part of the San Francisco–Oakland–Berkeley, CA Metropolitan Statistical Area, and the San Jose–San Francisco–Oakland, CA Combined Statistical Area. History The county was formed on March ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tesla Fault
The Tesla Fault can be found in the northeastern Diablo Range, California. This fault is only semi-active. Geology This fault has been demonstrated to have a dextral offset of and is closely associated with the Greenville Fault. Mocho Subbasin The Tesla Fault forms the eastern boundary of the large aquifer known as the Mocho Subbasin. Some groundwater flow of the Mocho Subbasin occurs across the Tesla fault boundary, but flows are discontinuous below a depth of across the Tesla Fault.''Environmental Site Screening Analysis, 2127 Railroad Avenue, Livermore, California'', Earth Metrics rpt no. 7785, San Mateo, Ca., Feb., 1989 See also *Arroyo Valle Arroyo Valle or Arroyo Del Valle is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map, accessed March 15, 2011 westward-flowing stream that begins in northeastern Santa Clara County, California ... * Tassajara Formation References External linksUSGS Database Search, Partial ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
El Camino Viejo
El Camino Viejo a Los Ángeles ( en, the Old Road to Los Angeles), also known as El Camino Viejo and the Old Los Angeles Trail, was the oldest north-south trail in the interior of Spanish colonial Las Californias (1769–1822) and Mexican Alta California (1822–1848), present day California. It became a well established inland route, and an alternative to the coastal El Camino Real trail used since the 1770s in the period. It ran from San Pedro Bay and the Pueblo de Los Ángeles, over the Transverse Ranges through Tejon Pass and down through the San Emigdio Mountains to the San Joaquin Valley, where it followed a route along the eastern slopes of the Coast Ranges between '' aguaje'' (watering places) and '' arroyos''. It passed west out of the valley, over the Diablo Range at Corral Hollow Pass into the Livermore Valley, to end at the Oakland Estuary on the eastern San Francisco Bay. History The route of El Camino Viejo was well established by the 1820s, and the route was in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rivers Of Alameda County, California
A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of water. Small rivers can be referred to using names such as creek, brook, rivulet, and rill. There are no official definitions for the generic term river as applied to geographic features, although in some countries or communities a stream is defined by its size. Many names for small rivers are specific to geographic location; examples are "run" in some parts of the United States, "burn" in Scotland and northeast England, and "beck" in northern England. Sometimes a river is defined as being larger than a creek, but not always: the language is vague. Rivers are part of the water cycle. Water generally collects in a river from precipitation through a drainage basin from surface runoff and other sources such as groundwater recharge, sprin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endangered Species
An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching and invasive species. The International Union for Conservation of Nature (IUCN) Red List lists the global conservation status of many species, and various other agencies assess the status of species within particular areas. Many nations have laws that protect conservation-reliant species which, for example, forbid hunting, restrict land development, or create protected areas. Some endangered species are the target of extensive conservation efforts such as captive breeding and habitat restoration. Human activity is a significant cause in causing some species to become endangered. Conservation status The conservation status of a species indicates the likelihood that it will become extinct. Multiple factors are considered when assessing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Threatened
Threatened species are any species (including animals, plants and fungi) which are vulnerable to endangerment in the near future. Species that are threatened are sometimes characterised by the population dynamics measure of ''critical depensation'', a mathematical measure of biomass related to population growth rate. This quantitative metric is one method of evaluating the degree of endangerment. IUCN definition The International Union for Conservation of Nature (IUCN) is the foremost authority on threatened species, and treats threatened species not as a single category, but as a group of three categories, depending on the degree to which they are threatened: *Vulnerable species * Endangered species * Critically endangered species Less-than-threatened categories are near threatened, least concern, and the no longer assigned category of conservation dependent. Species which have not been evaluated (NE), or do not have sufficient data ( data deficient) also are not conside ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arroyo Mocho
Arroyo Mocho is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map, accessed March 15, 2011 stream which originates in the far northeastern corner of Santa Clara County and flows northwesterly into eastern Alameda County, California. After traversing the cities of Livermore and Pleasanton it joins South San Ramon Creek to become Arroyo de la Laguna, which in turn flows to Alameda Creek and thence to San Francisco Bay. History Arroyo Mocho means "cutoff creek". Erwin G. Gudde's ''California Place Names'' says it got the name because it historically had no outlet but dissipated into the ground after spreading out into many smaller streams between Livermore and Pleasanton. As early as 1852 it was also called Mocho Creek. Frank Latta, in his book on Joaquin Murrieta, says it got its name from the nickname of the man who ran the Murrietta gang's water stations and holding corrals in this area along La Vereda del Monte, the route o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Groundwater
Groundwater is the water present beneath Earth's surface in rock and soil pore spaces and in the fractures of rock formations. About 30 percent of all readily available freshwater in the world is groundwater. A unit of rock or an unconsolidated deposit is called an aquifer when it can yield a usable quantity of water. The depth at which soil pore spaces or fractures and voids in rock become completely saturated with water is called the water table. Groundwater is recharged from the surface; it may discharge from the surface naturally at springs and seeps, and can form oases or wetlands. Groundwater is also often withdrawn for agricultural, municipal, and industrial use by constructing and operating extraction wells. The study of the distribution and movement of groundwater is hydrogeology, also called groundwater hydrology. Typically, groundwater is thought of as water flowing through shallow aquifers, but, in the technical sense, it can also contain soil moisture, permafros ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Livermore Fault
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Livermore may refer to: Places in the United States *Livermore, California ** Lawrence Livermore National Laboratory, a U.S. Department of Energy lab in Livermore, California **Livermore Valley AVA, California wine region in Alameda County *Livermore, Colorado *Livermore, Iowa *Livermore, Kentucky **Livermore Bridge, south of Livermore, Kentucky *Livermore, Maine *Livermore Falls, Maine *Livermore, New Hampshire *Livermore, Pennsylvania Other uses *Livermore (surname) See also * Livermere *Livermorium, the official name for element 116 (formerly called ununhexium), named after the laboratory (and the city) * Justice Livermore (other) *Liverpool Liverpool is a city and metropolitan borough in Merseyside, England. With a population of in 2019, it is the 10th largest English district by population and its metropolitan area is the fifth largest in the United Kingdom, with a populat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Livermore, California
Livermore (formerly Livermorès, Livermore Ranch, and Nottingham) is a city in Alameda County, California. With a 2020 population of 87,955, Livermore is the most populous city in the Tri-Valley. It is located on the eastern edge of California's San Francisco Bay Area. The current mayor is Bob Woerner. Livermore was platted and registered on November 4, 1869, as a railroad town by and named for Robert Livermore, his friend and a local rancher who settled in the area in the 1840s. It is the home of the Lawrence Livermore National Laboratory, for which the chemical element livermorium is named (and thus, placing the city's name in the periodic table). It is also the California site of Sandia National Laboratories, which is headquartered in Albuquerque, New Mexico. Its south side is home to local vineyards. The city has redeveloped its downtown district and is considered part of the Tri-Valley area, comprising Amador, Livermore and San Ramon valleys. History Pre-C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Livermore Valley
The Livermore Valley, historically known as the Valle de San José (Valley of San José), is a valley in Alameda County, California, located in the East Bay region. The city of Livermore is located in the valley. Geography The valley is bounded by the Diablo Range on the north, east, and south; and is linked to the west with the Amador Valley. Watercourses draining the Livermore Valley include Arroyo Mocho, Arroyo Valle, Arroyo Seco, and Arroyo Las Positas. Wine Country The southern side of Livermore is wine country. Wineries in the area include Wente Vineyards and Concannon Vineyards. Laboratories In the east of Livermore is the Lawrence Livermore Laboratory. Element 116 on the periodic table, Livermorium, is named after this laboratory. Sandia Laboratory is also located in eastern Livermore. Due to these laboratories, much of eastern Livermore is off-limits to the general public. History Livermore Valley was named after Robert Livermore, an immigrant American ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mocho Subbasin
The Mocho Subbasin is the largest of the groundwater subbasins in the Livermore Valley watershed in Northern California. This subbasin is bounded to the west by the Livermore Fault Zone and to the east by the Tesla Fault. Some groundwater flow occurs across these fault boundaries, but flows are discontinuous below a depth of fifty feet across the Tesla Fault and south of the Arroyo Mocho channel across the Livermore Fault. Surface watercourses in this unit include Arroyo Valle and Arroyo Seco. Aquifer details To the north, the Tiago Macheira Subbasin contacts the Tassajara Formation, with which no groundwater exchange occurs. Groundwater flow in the subbasin is generally from southeast toward the northwest or north, corresponding to the slope of the regional terrain and water table surface. Uncontained shallow groundwater occurs within of the surface, while deeper confined water has levels that occur at various depths from to below the surface. Groundwater quality ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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