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Mammoth Pool Dam
Mammoth Pool Dam is a hydroelectric dam located on the San Joaquin River in the southern Sierra Nevada mountain range of California, about northeast of Fresno. It forms Mammoth Pool Reservoir and lies within the Sierra National Forest. The dam and reservoir were named after a large natural pool in the river that was once located above the present dam site. History In 1900, engineer John S. Eastwood and several wealthy investors founded the Mammoth Power Company with the goal of harnessing hydroelectric power from the upper San Joaquin River. The Mammoth Pool site, where the San Joaquin River canyon chokes down to a narrow gap between massive walls of solid granite, was immediately seen as an attractive dam site. The company's first proposal was to construct a rockfill diversion dam that would send water into a -long tunnel, developing a hydraulic head of over to supply a 120,000 hp powerhouse. However, the investors involved with Mammoth eventually lost interest due to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fresno County, California
Fresno County (), officially the County of Fresno, is a county located in the central portion of the U.S. state of California. As of the 2020 Census, the population was 1,008,654. The county seat is Fresno, the fifth-most populous city in California. Fresno County comprises the Fresno, CA Metropolitan Statistical Area, which is part of the Fresno- Madera, CA Combined Statistical Area. It is located in the Central Valley, south of Stockton and north of Bakersfield. Since 2010, statewide droughts in California have further strained both Fresno County's and the entire Central Valley's water security. History The area now known as Fresno County was the traditional homeland of Yokuts and Mono peoples, and was later settled by Spaniards during a search for suitable mission sites. In 1846, this area became part of the United States as a result of the Mexican War. Fresno County was formed in 1856 from parts of Mariposa, Merced and Tulare counties. ''Fresno'' is Spanish for "ash ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exfoliation (geology)
Exfoliation joints or sheet joints are surface-parallel fracture systems in rock, and often leading to erosion of concentric slabs. ''(See Joint (geology)).'' General characteristics of exfoliation joints * Commonly follow topography. * Divide the rock into sub-planar slabs. * Joint spacing increases with depth from a few centimeters near the surface to a few meters * Maximum depth of observed occurrence is around 100 meters. * Deeper joints have a larger radius of curvature, which tends to round the corners of the landscape as material is eroded * Fracture mode is tensile * Occur in many different lithologies and climate zones, not unique to glaciated landscapes. * Host rock is generally sparsely jointed, fairly isotropic, and has high compressive strength. * Can have concave and convex upwards curvatures. * Often associated with secondary compressive forms such as arching, buckling, and A-tents (buckled slabs) Formation of exfoliation joints Despite their common occurrenc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buildings And Structures In Fresno County, California
A building, or edifice, is an enclosed structure with a roof and walls standing more or less permanently in one place, such as a house or factory (although there's also portable buildings). Buildings come in a variety of sizes, shapes, and functions, and have been adapted throughout history for a wide number of factors, from building materials available, to weather conditions, land prices, ground conditions, specific uses, prestige, and aesthetic reasons. To better understand the term ''building'' compare the list of nonbuilding structures. Buildings serve several societal needs – primarily as shelter from weather, security, living space, privacy, to store belongings, and to comfortably live and work. A building as a shelter represents a physical division of the human habitat (a place of comfort and safety) and the ''outside'' (a place that at times may be harsh and harmful). Ever since the first cave paintings, buildings have also become objects or canvasses of much artistic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of The Tallest Dams In The United States
This is a list of the tallest dams in the United States. The main list includes all U.S. dams over tall, and a second list gives the tallest dams in each state. Dimensions given are for foundation height, not hydraulic height or head. Structures such as levees, dikes and tailings dams are not included in the lists. Decommissioned or failed dams, such as Teton Dam in Idaho, are included. Both lists are works in progress and will be updated periodically with new information. There are currently 75 entries on the main list. Most of the U.S.'s taller dams are located in the west because of the steeper and more rugged topography. The tallest is Oroville Dam in northern California, a embankment dam completed in 1968. Five of the ten tallest dams in the U.S. are located in California. The Colorado, Columbia and Sacramento– San Joaquin river systems contain the greatest number of tall dams. In the eastern U.S., tall dams are less common because of the lesser vertical relief. The ta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Reservoirs And Dams In California
Following is a list of dams and reservoirs in California in a sortable table. There are over 1,400 named dams and 1,300 named reservoirs in the state of California. Dams in service :''Please add to this list from the below sources.'' Former dams *Baldwin Hills Reservoir (1947–1963) failed December 14, 1963 *St. Francis Dam (1926–1928) failed March 12, 1928 *San Clemente Dam, intentionally removed in 2015 - 2016 because of environmental issues. *Van Norman Dams (1911–1971) failed February 9, 1971, in 1971 San Fernando earthquake Proposed dams * Ah Pah Dam (defunct) * Auburn Dam (defunct) * Centennial Dam * Sites Reservoir * Temperance Flat Dam See also *California State Water Project *List of lakes in California *List of largest reservoirs of California *List of power stations in California *List of the tallest dams in the United States * List of United States Bureau of Reclamation dams *Water in California California's interconnected water system serves over 30 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Power Stations In California
This is a list of power stations in the U.S. state of California that are used for utility-scale electricity generation. This includes baseload, peaking, and energy storage power stations, but does not include large backup generators. , California had 80 GW of installed generation capacity encompassing more than 1,500 power plants; with 41 GW of natural gas, 26.5 GW of renewable (12 GW solar, 6 GW wind), 12 GW large hydroelectric, and 2.4 GW nuclear. In 2020, California had a total summer capacity of 78,055 MW through all of its power plants, and a net energy generation of 193,075 GWh. Its electricity production was the third largest in the nation behind Texas and Florida. California ranks first in the nation as a producer of solar, geothermal, and biomass resources. Utility-scale solar photovoltaic and thermal sources together generated 17% of electricity in 2021. Small-scale solar including customer-owned PV panels delivered an additional net 19,828 GWh to Ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Big Creek (San Joaquin River)
Big Creek is a tributary of the San Joaquin River in the Sierra Nevada, within the Sierra National Forest, central California. The creek flows in Fresno County.U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map, accessed March 11, 2011 The settlement of Big Creek is named for it, as was the 2020 Creek Fire, which started in the Big Creek drainage and became one of California's largest wildfires ever recorded. Big Creek Hydroelectric Project The Big Creek Hydroelectric Project, one of the most extensive hydroelectric systems in the world, is partly located on Big Creek. It is owned by Southern California Edison. There are nine power plants in the project: Portal, Eastwood, Mammoth Pool; and Big Creek 1, 2, 2A, 3, 4, and 8. Reservoirs in the project include Huntington Lake, Shaver Lake, Redinger Lake, Florence Lake, Lake Thomas A Edison, and Mammoth Pool Reservoir. The terminus of the system is the outlet of Big Creek 4, which disc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mule Deer
The mule deer (''Odocoileus hemionus'') is a deer indigenous to western North America; it is named for its ears, which are large like those of the mule. Two subspecies of mule deer are grouped into the black-tailed deer. Unlike the related white-tailed deer (''Odocoileus virginianus''), which is found throughout most of North America east of the Rocky Mountains and in the valleys of the Rocky Mountains from Idaho and Wyoming northward, mule deer are only found on the western Great Plains, in the Rocky Mountains, in the southwest United States, and on the west coast of North America. Mule deer have also been introduced to Argentina and Kauai, Kauai, Hawaii. Taxonomy Mule deer can be divided into two main groups: the mule deer (''sensu stricto'') and the black-tailed deer. The first group includes all subspecies, except ''O. h. columbianus'' and ''Sitka deer, O. h. sitkensis'', which are in the black-tailed deer group. The two main groups have been treated as separate species, but ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Geological Survey
The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization's work spans the disciplines of biology, geography, geology, and hydrology. The USGS is a fact-finding research organization with no regulatory responsibility. The agency was founded on March 3, 1879. The USGS is a bureau of the United States Department of the Interior; it is that department's sole scientific agency. The USGS employs approximately 8,670 people and is headquartered in Reston, Virginia. The USGS also has major offices near Lakewood, Colorado, at the Denver Federal Center, and Menlo Park, California. The current motto of the USGS, in use since August 1997, is "science for a changing world". The agency's previous slogan, adopted on the occasion of its hundredt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surge Chamber
Surge means a sudden transient rush or flood, and may refer to: Science * Storm surge, the onshore gush of water associated with a low-pressure weather system * Surge (glacier), a short-lived event where a glacier can move up to velocities 100 times faster than normal * Pyroclastic surge, the fluidised mass of turbulent gas and rock fragments ejected during some volcanic eruptions * Characteristic impedance, also known as "surge impedance" in electrical engineering * Voltage surge, short duration surges in electrical circuits * Compressor stall, also known as "compressor surge", in aviation * Surge in compressors in industrial compressors * Hydraulic surge in liquid pipes; also called pressure surge and water hammer (see surge control) * Surge (translational motion), one of the translational degrees of freedom of any stiff body (for example a vehicle), describing motion along the longitudinal axis (forward or backwards) * Surge (waves), transient or periodic motion in the direct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megawatt
The watt (symbol: W) is the unit of Power (physics), power or radiant flux in the International System of Units, International System of Units (SI), equal to 1 joule per second or 1 kg⋅m2⋅s−3. It is used to quantification (science), quantify the rate of Energy transformation, energy transfer. The watt is named after James Watt (1736–1819), an 18th-century Scottish people, Scottish invention, inventor, mechanical engineer, and chemist who improved the Newcomen steam engine, Newcomen engine with his own Watt steam engine, steam engine in 1776. Watt's invention was fundamental for the Industrial Revolution. Overview When an object's velocity is held constant at one metre per second against a constant opposing force of one Newton (unit), newton, the rate at which Work (physics), work is done is one watt. : \mathrm In terms of electromagnetism, one watt is the rate at which electrical work is performed when a current of one ampere (A) flows across an electrical potentia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Penstock
A penstock is a sluice or gate or intake structure that controls water flow, or an enclosed pipe that delivers water to hydro turbines and sewerage systems. The term is inherited from the earlier technology of mill ponds and watermills. Hydroelectric systems and dams Penstocks for hydroelectric installations are normally equipped with a gate system and a surge tank. They can be a combination of many components such as anchor block, drain valve, air bleed valve, and support piers depending on the application. Flow is regulated by turbine operation and is nil when turbines are not in service. Penstocks, particularly where used in polluted water systems, need to be maintained by hot water washing, manual cleaning, antifouling coatings, and desiccation. The term is also used in irrigation dams to refer to the channels leading to and from high-pressure sluice gates. Penstocks are also used in mine tailings dam construction. The penstock is usually situated fairly close to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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