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Williamson, West Virginia
Williamson is a city in Mingo County, West Virginia, United States, situated along the Tug Fork River. The population was 3,191 at the 2010 census. It is the county seat of Mingo County, and is the county's largest and most populous city. Williamson is home to Southern West Virginia Community and Technical College. The Tug Fork River separates Williamson from South Williamson, Kentucky. Williamson is the site of a large rail yard built by the former Norfolk and Western Railroad (now Norfolk Southern Railway), which was built to service the many coal mines of the region. The city is protected by a floodwall, completed by the U.S. Army Corps of Engineers in 1991 in response to devastating floods along the Tug Fork River in 1977 and again in 1984. The wall incorporates floodgates along major access points which, when locked, form a solid barrier against floodwaters. There have only been two uses of the gates thus far: the first occurring in 2002 during a major flood in the region, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
City
A city is a human settlement of notable size.Goodall, B. (1987) ''The Penguin Dictionary of Human Geography''. London: Penguin.Kuper, A. and Kuper, J., eds (1996) ''The Social Science Encyclopedia''. 2nd edition. London: Routledge. It can be defined as a permanent and densely settled place with administratively defined boundaries whose members work primarily on non-agricultural tasks. Cities generally have extensive systems for housing, transportation, sanitation, utilities, land use, production of goods, and communication. Their density facilitates interaction between people, government organisations and businesses, sometimes benefiting different parties in the process, such as improving efficiency of goods and service distribution. Historically, city-dwellers have been a small proportion of humanity overall, but following two centuries of unprecedented and rapid urbanization, more than half of the world population now lives in cities, which has had profound consequences for g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rail Yard
A rail yard, railway yard, railroad yard (US) or simply yard, is a series of tracks in a rail network for storing, sorting, or loading and unloading rail vehicles and locomotives. Yards have many tracks in parallel for keeping rolling stock or unused locomotives stored off the main line, so that they do not obstruct the flow of traffic. Cars or wagons are moved around by specially designed yard switchers (US) or shunters, a type of locomotive. Cars or wagons in a yard may be sorted by numerous categories, including railway company, loaded or unloaded, destination, car type, or whether they need repairs. Yards are normally built where there is a need to store rail vehicles while they are not being loaded or unloaded, or are waiting to be assembled into trains. Large yards may have a tower to control operations. Many yards are located at strategic points on a main line. Main-line yards are often composed of an up yard and a down yard, linked to the associated direction of travel. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Population Density
Population density (in agriculture: standing stock or plant density) is a measurement of population per unit land area. It is mostly applied to humans, but sometimes to other living organisms too. It is a key geographical term.Matt RosenberPopulation Density Geography.about.com. March 2, 2011. Retrieved on December 10, 2011. In simple terms, population density refers to the number of people living in an area per square kilometre, or other unit of land area. Biological population densities Population density is population divided by total land area, sometimes including seas and oceans, as appropriate. Low densities may cause an extinction vortex and further reduce fertility. This is called the Allee effect after the scientist who identified it. Examples of the causes of reduced fertility in low population densities are * Increased problems with locating sexual mates * Increased inbreeding Human densities Population density is the number of people per unit of area, usuall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Census
A census is the procedure of systematically acquiring, recording and calculating information about the members of a given population. This term is used mostly in connection with national population and housing censuses; other common censuses include censuses of agriculture, traditional culture, business, supplies, and traffic censuses. The United Nations (UN) defines the essential features of population and housing censuses as "individual enumeration, universality within a defined territory, simultaneity and defined periodicity", and recommends that population censuses be taken at least every ten years. UN recommendations also cover census topics to be collected, official definitions, classifications and other useful information to co-ordinate international practices. The UN's Food and Agriculture Organization (FAO), in turn, defines the census of agriculture as "a statistical operation for collecting, processing and disseminating data on the structure of agriculture, covering th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Williamson West Virginia Aerial View
Williamson may refer to: Places *Williamson, Arizona *Williamson, Georgia *Williamson, Illinois *Williamson, Iowa *Williamson, New York, a town in Wayne County, New York. * Williamson (CDP), New York, a hamlet and census-designated place in Wayne County, New York. *Williamson, West Virginia *Williamson County, Illinois *Williamson County, Tennessee *Williamson County, Texas People *Williamson (surname) Other uses *'' Williamson v. Lee Optical Co.'', a 1955 U.S. Supreme Court case *Williamson amplifier, a type of push-pull audio amplifier with low distortion first designed in 1947 *Williamson Road Junior Public School, an elementary school in Toronto, Ontario *Williamson ether synthesis, one of the most common methods for preparing ethers See also *Williams (other) *Williamston (other) *Williamstown (other) *Justice Williamson (other) Justice Williamson * John Isaac Williamson, associate justice of the Supreme Court of Missouri * Robert B. Will ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tug Fork
The Tug Fork is a tributary of the Big Sandy River, long,U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed June 13, 2011 in southwestern West Virginia, southwestern Virginia, and eastern Kentucky in the United States. Via the Big Sandy and Ohio rivers, it is part of the watershed of the Mississippi River. It is also known as the Tug Fork River. The United States Board on Geographic Names settled on "Tug Fork" as the stream's official name in 1975. The Tug Fork rises in the Appalachian Mountains of extreme southwestern West Virginia, in southern McDowell County, near the Virginia state line. It flows in a meandering course through the mountains generally northwest, past Welch. Approximately northwest of Welch, it briefly forms approximately of the state line between West Virginia (northeast) and Virginia (southwest). For the remainder of its course it forms part of the boundary between West Virginia (east) and Kentuc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Humid Subtropical Climate
A humid subtropical climate is a zone of climate characterized by hot and humid summers, and cool to mild winters. These climates normally lie on the southeast side of all continents (except Antarctica), generally between latitudes 25° and 40° and are located poleward from adjacent tropical climates. It is also known as warm temperate climate in some climate classifications. Under the Köppen climate classification, ''Cfa'' and ''Cwa'' climates are either described as humid subtropical climates or warm temperate climates. This climate features mean temperature in the coldest month between (or ) and and mean temperature in the warmest month or higher. However, while some climatologists have opted to describe this climate type as a "humid subtropical climate", Köppen himself never used this term. The humid subtropical climate classification was officially created under the Trewartha climate classification. In this classification, climates are termed humid subtropical when the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Köppen Climate Classification
The Köppen climate classification is one of the most widely used climate classification systems. It was first published by German-Russian climatologist Wladimir Köppen (1846–1940) in 1884, with several later modifications by Köppen, notably in 1918 and 1936. Later, the climatologist Rudolf Geiger (1894–1981) introduced some changes to the classification system, which is thus sometimes called the Köppen–Geiger climate classification system. The Köppen climate classification divides climates into five main climate groups, with each group being divided based on seasonal precipitation and temperature patterns. The five main groups are ''A'' (tropical), ''B'' (arid), ''C'' (temperate), ''D'' (continental), and ''E'' (polar). Each group and subgroup is represented by a letter. All climates are assigned a main group (the first letter). All climates except for those in the ''E'' group are assigned a seasonal precipitation subgroup (the second letter). For example, ''Af'' indi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Floodgate
Floodgates, also called stop gates, are adjustable gates used to control water flow in flood barriers, reservoir, river, stream, or levee systems. They may be designed to set spillway crest heights in dams, to adjust flow rates in sluices and canals, or they may be designed to stop water flow entirely as part of a levee or storm surge system. Since most of these devices operate by controlling the water surface elevation being stored or routed, they are also known as crest gates. In the case of flood bypass systems, floodgates sometimes are also used to lower the water levels in a main river or canal channels by allowing more water to flow into a flood bypass or detention basin when the main river or canal is approaching a flood stage. Types Valves Valves used in floodgate applications have a variety of design requirements and are usually located at the base of dams. Often, the most important requirement (besides regulating flow) is energy dissipation. Since water is very he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Floods
A flood is an overflow of water ( or rarely other fluids) that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Floods are an area of study of the discipline hydrology and are of significant concern in agriculture, civil engineering and public health. Human changes to the environment often increase the intensity and frequency of flooding, for example land use changes such as deforestation and removal of wetlands, changes in waterway course or flood controls such as with levees, and larger environmental issues such as climate change and sea level rise. In particular climate change's increased rainfall and extreme weather events increases the severity of other causes for flooding, resulting in more intense floods and increased flood risk. Flooding may occur as an overflow of water from water bodies, such as a river, lake, or ocean, in which the water overtops or breaks levees, resulting in some of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Floodwall
A flood wall (or floodwall) is a primarily vertical artificial barrier designed to temporarily contain the waters of a river or other waterway which may rise to unusual levels during seasonal or extreme weather events. Flood walls are mainly used on locations where space is scarce, such as cities or where building levees or dikes (dykes) would interfere with other interests, such as existing buildings, historical architecture or commercial use of embankments. Flood walls are nowadays mainly constructed from pre-fabricated concrete elements. Flood walls often have floodgates which are large openings to provide passage except during periods of flooding, when they are closed. As a flood walls mostly consist of relatively short elements compared to dikes, the connections between the elements are critical to prevent the failure of the flood wall. The substantial costs of flood walls can be justified by the value of commercial property thus protected from damage caused by flooding. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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