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San Juan Creek Valley
San Juan Creek, also called the San Juan River, is a long stream in Orange Orange most often refers to: *Orange (fruit), the fruit of the tree species '' Citrus'' × ''sinensis'' ** Orange blossom, its fragrant flower *Orange (colour), from the color of an orange, occurs between red and yellow in the visible spectrum * ... and Riverside County, California, Riverside Counties, draining a watershed of .7.5 Minute Quadrangle Map, U.S. Geological Survey, San Juan Capistrano, 1968, photorevised 1981 Its mainstem (hydrology), mainstem begins in the southern Santa Ana Mountains in the Cleveland National Forest. It winds west and south through San Juan Canyon, and is joined by Arroyo Trabuco as it passes through San Juan Capistrano, California, San Juan Capistrano. It flows into the Pacific Ocean at Doheny State Beach. San Juan Canyon provides a major part of the route for California State Route 74 (the Ortega Highway). Before Spanish colonization in the 1770s, the San Juan Creek wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mission San Juan Capistrano
Mission San Juan Capistrano ( es, Misión San Juan Capistrano) is a Spanish mission in San Juan Capistrano, Orange County, California. Founded November 1, 1776 in colonial ''Las Californias'' by Spanish Catholic missionaries of the Franciscan Order, it was named for Saint John of Capistrano. The Spanish Colonial Baroque style church was located in the Alta California province of the Viceroyalty of New Spain. The Mission was founded less than 60 yards from the village of Acjacheme. The Mission was secularized by the Mexican government in 1833, and returned to the Roman Catholic Church by the United States government in 1865. The Mission was damaged over the years by a number of natural disasters, but restoration and renovation efforts date from around 1910. It functions today as a museum. Introduction The mission was founded in 1776, by the Spanish Catholics of the Franciscan Order. Named for Saint John of Capistrano, a 14th-century theologian and "warrior priest" who resided ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mainstem (hydrology)
In hydrology, a mainstem (or trunk) is "the primary downstream segment of a river, as contrasted to its tributaries". Water enters the mainstem from the river's drainage basin, the land area through which the mainstem and its tributaries flow.. A drainage basin may also be referred to as a ''watershed'' or ''catchment''. Hydrological classification systems assign numbers to tributaries and mainstems within a drainage basin. In the Strahler number, a modification of a system devised by Robert E. Horton in 1945, channels with no tributaries are called "first-order" streams. When two first-order streams meet, they are said to form a second-order stream; when two second-order streams meet, they form a third-order stream, and so on. In the Horton system, the entire mainstem of a drainage basin was assigned the highest number in that basin. However, in the Strahler system, adopted in 1957, only that part of the mainstem below the tributary of the next highest rank gets the highest num ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bell Canyon
Bell Canyon is a major drainage of the Santa Ana Mountains in Orange County, California in the United States. Bell Creek (also known as Bell Canyon Creek or Arroyo de las Campanas) flows about in a southerly direction to its confluence with San Juan Creek. The Bell Canyon drainage is located to the east and parallel to Cañada Gobernadora, and to the south of Trabuco Creek. After Trabuco Creek, it is the second largest tributary of San Juan Creek in terms of length and its watershed area of . Most of Bell Canyon consists of wilderness in the Cleveland National Forest and Ronald W. Caspers Wilderness Park. The valley is more than deep and averages a mile (1.61 km) wide, and is joined by the major tributaries of Dove Canyon, Crow Canyon and Tick Creek. Human history The Juaneño or ''Acagchemem'' Native Americans have lived in the Bell Canyon area for almost 10,000 years, from archeology at the San Dieguito complex. It is said they would strike rocks against boulders in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alluvium
Alluvium (from Latin ''alluvius'', from ''alluere'' 'to wash against') is loose clay, silt, sand, or gravel that has been deposited by running water in a stream bed, on a floodplain, in an alluvial fan or beach, or in similar settings. Alluvium is also sometimes called alluvial deposit. Alluvium is typically geologically young and is not consolidated into solid rock. Sediments deposited underwater, in seas, estuaries, lakes, or ponds, are not described as alluvium. Floodplain alluvium can be highly fertile, and supported some of the earliest human civilizations. Definitions The present consensus is that "alluvium" refers to loose sediments of all types deposited by running water in floodplains or in alluvial fans or related landforms. However, the meaning of the term has varied considerably since it was first defined in the French dictionary of Antoine Furetière, posthumously published in 1690. Drawing upon concepts from Roman law, Furetière defined ''alluvion'' (the F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hot Springs Canyon
Hot or the acronym HOT may refer to: Food and drink *Pungency, in food, a spicy or hot quality *Hot, a wine tasting descriptor Places *Hot district, a district of Chiang Mai province, Thailand **Hot subdistrict, a sub-district of Hot District, Thailand **Tha Kham, Chiang Mai, also known as Hot, a town in Hot District, Chiang Mai province, Thailand *Hot, Albania, a village in the Malësi e Madhe municipality, Shkodër County, Albania Music *H.O.T. pronounced "H. O. T.", (High-Five of Teenagers), a South Korean boy band *Hawaii Opera Theatre, an opera company in Honolulu, Hawaii *Hot (American vocal group), best known for 1977 hit "Angel in Your Arms" 1976–1980 *Hot 97, branding for hip-hop radio station WQHT in New York City Albums * ''Hot'' (Freda Payne album), 1979 * ''Hot'' (Half Japanese album), 1995 * ''Hot'' (Inna album) or the title song (see below), 2009 * ''Hot'' (James Brown album) or the title song (see below), 1976 * ''Hot'' (Mel B album), 2000 * ''Hot'' (Paul Bl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ortega Highway
Ortega is a Spanish surname. A baptismal record in 1570 records a ''de Ortega'' "from the village of Ortega". There were several villages of this name in Spain. The toponym derives from Latin ''urtica'', meaning "nettle". Some of the Ortega spelling variants are Ortega, Ortego, de Ortega, Ortegada, Ortegal, Hortega, Ortiga, Ortigueda, Ortigueira, Ortigosa, Orreaga, etc. A cognate surname in Italian is ''Ortica'', in Romanian '' Urzică'', in French ''Ortie'', all from Latin ''urtica''. Origin Roberto Faure, coauthor of the ''Diccionario de Apellidos Españoles'', states that Ortega is derived from the noun ''ortega'', a spelling variant of the modern Castilian Spanish '' ortiga'' "nettle". The name of the plant is found as a toponym in various places in Spain, such as Ortega (Burgos), Ortega ( Jaén) or Ortega (Monfero, A Coruña). Mexican author Gutierre Tibón advanced the alternative theory that the name derives from ''Ortún'', earlier ''Fortún'', from the Latin name ''For ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Juan Canyon
San Juan Creek is a creek in Orange County in the U.S. state of California. It is about long, and along with its major tributary, Trabuco Creek, drains near the southernmost extent of Orange County. This article describes the course of San Juan Creek. Headwaters to San Juan Canyon San Juan Creek begins in the southern Santa Ana Mountains, a few miles northwest of Lake Elsinore. Its highest elevation is above sea level. Paralleling the Ortega Highway (California State Route 74) the creek flows erratically south, west and occasionally northwest. In the furthest upper reaches of the watershed, the creek is typically ephemeral. The creek channel in the uppermost few miles is a narrow mountain stream with many rapids and waterfalls, which include a series of large cascades, known as San Juan Falls. There are little alluvial deposits in the canyons, and the creek mostly cascades over bedrock. In this upper reach, the pool-and-riffle stream channel structure is evident. There are a few ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Elsinore
Lake Elsinore is a natural freshwater lake in Riverside County, California, located east of the Santa Ana Mountains and fed by the San Jacinto River. Originally named ''Laguna Grande'' by Spanish explorers, it was renamed for the town of Elsinore, established on its northeastern shore on April 9, 1888. Limnology Lake Elsinore is the largest natural freshwater lake in Southern California. With its own 750-mi2 (1,900-km2) watershed, it is situated at the lowest point within the San Jacinto River watershed of , at the terminus of the San Jacinto River. It is the terminal lake of a partially closed basin called the San Jacinto Basin. Lake levels are healthy at an average of above sea level with a volume of that often fluctuates, although much has been done recently to prevent the lake from drying up, flooding, or becoming stagnant. At , the lake will spill into the outflow channel on its northeastern shore, known properly as Temescal Wash, flowing northwest through Temescal C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Urbanization
Urbanization (or urbanisation) refers to the population shift from rural to urban areas, the corresponding decrease in the proportion of people living in rural areas, and the ways in which societies adapt to this change. It is predominantly the process by which towns and cities are formed and become larger as more people begin living and working in central areas. Although the two concepts are sometimes used interchangeably, urbanization should be distinguished from urban growth. Urbanization refers to the ''proportion'' of the total national population living in areas classified as urban, whereas urban growth strictly refers to the ''absolute'' number of people living in those areas. It is predicted that by 2050 about 64% of the developing world and 86% of the developed world will be urbanized. That is equivalent to approximately 3 billion urbanites by 2050, much of which will occur in Africa and Asia. Notably, the United Nations has also recently projected that nearly all gl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Urban Runoff
Urban runoff is surface runoff of rainwater, landscape irrigation, and car washing created by urbanization. Impervious surfaces (roads, parking lots and sidewalks) are constructed during land development. During rain , storms and other precipitation events, these surfaces (built from materials such as asphalt and concrete), along with rooftops, carry polluted stormwater to storm drains, instead of allowing the water to percolate through soil. This causes lowering of the water table (because groundwater recharge is lessened) and flooding since the amount of water that remains on the surface is greater.Water Environment Federation Alexandria, VA; an American Society of Civil Engineers Reston, VA [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Floodplain
A floodplain or flood plain or bottomlands is an area of land adjacent to a river which stretches from the banks of its channel to the base of the enclosing valley walls, and which experiences flooding during periods of high discharge.Goudie, A. S., 2004, ''Encyclopedia of Geomorphology'', vol. 1. Routledge, New York. The soils usually consist of clays, silts, sands, and gravels deposited during floods. Because the regular flooding of floodplains can deposit nutrients and water, floodplains frequently have high soil fertility; some important agricultural regions, such as the Mississippi river basin and the Nile, rely heavily on the flood plains. Agricultural regions as well as urban areas have developed near or on floodplains to take advantage of the rich soil and fresh water. However, the risk of flooding has led to increasing efforts to control flooding. Formation Most floodplains are formed by deposition on the inside of river meanders and by overbank flow. Whereve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
