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Lake Anna
Lake Anna is one of the largest freshwater inland reservoirs in Virginia, covering an area of , and located south of Washington, D.C., in Louisa and Spotsylvania counties (and partially in Orange County at the northern tip). The lake is easily accessible from Fredericksburg, Richmond, Charlottesville, Northern Virginia, and Washington, D.C., and is one of the most popular recreational lakes in the state. History The reservoir is formed by the North Anna Dam on the North Anna River at . In 1968, Virginia Electric and Power Company (now Dominion) purchased of farmlands in three counties along the North Anna and Pamunkey rivers. The aim was to provide clean, fresh water to help cool the nuclear power generating plants at the North Anna Nuclear Generating Station adjacent to the lake. By 1972, the lake bottom was cleared of all timber, and the dam was nearing completion. It was projected to take three years to completely fill the lake, but with the additional rainfall from Hurr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Louisa County, Virginia
Louisa County is a county located in the Commonwealth of Virginia. As of the 2020 census, the population was 37,596. The county seat is Louisa. History Prior to colonial settlement, the area comprising Louisa County was occupied by several indigenous peoples including the Tutelo, the Monacan, and the Manahoac peoples, who eventually fled to join the Cayuga Iroquois (Haudenosaunee) people in New York state under pressure from English settlers. Louisa County was established in 1742 from Hanover County. The county is named for Princess Louise of Great Britain, youngest daughter of King George II, and wife of King Frederick V of Denmark. Patrick Henry lived for some time in Louisa County on Roundabout Creek in 1764. Henry was being mentored at that time by the Louisa County magnate Thomas Johnson the representative of Louisa County in the House of Burgesses. In 1765, Patrick Henry won his first election to represent Louisa County in the House of Burgesses. At the end o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Canal
Canals or artificial waterways are waterways or engineered channels built for drainage management (e.g. flood control and irrigation) or for conveyancing water transport vehicles (e.g. water taxi). They carry free, calm surface flow under atmospheric pressure, and can be thought of as artificial rivers. In most cases, a canal has a series of dams and locks that create reservoirs of low speed current flow. These reservoirs are referred to as ''slack water levels'', often just called ''levels''. A canal can be called a navigation canal when it parallels a natural river and shares part of the latter's discharges and drainage basin, and leverages its resources by building dams and locks to increase and lengthen its stretches of slack water levels while staying in its valley. A canal can cut across a drainage divide atop a ridge, generally requiring an external water source above the highest elevation. The best-known example of such a canal is the Panama Can ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Brown Bullhead
The brown bullhead (''Ameiurus nebulosus'') is a fish of the family Ictaluridae that is widely distributed in North America. It is a species of bullhead catfish and is similar to the black bullhead (''Ameiurus melas'') and yellow bullhead (''Ameiurus natalis''). It was originally described as ''Pimelodus nebulosus'' by Charles Alexandre Lesueur in 1819, and is also referred to as ''Ictalurus nebulosus''. The brown bullhead is also widely known as the "mud pout", "horned pout", "hornpout", or simply "mud cat", a name also used with the other bullhead species. The brown bullhead is important as a clan symbol of the Ojibwe people. In their tradition, the bullhead or is one of six beings that came out of the sea to form the original clans. Appearance The brown bullhead grows to be approximately in length and is a darker brown-green dorsally, growing lighter green and yellow towards the ventral surface. The belly is off-white or cream, and the fish has no scales. Additionall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Yellow Bullhead
The yellow bullhead (''Ameiurus natalis'') is a species of bullhead catfish, a ray-finned fish that lacks scales. Description The yellow bullhead is a medium-sized member of the catfish family. It is typically yellow-olive to slate black on the back and may appear mottled depending on its habitat, though generally not as strongly as the brown bullhead (''Ameiurus nebulosus''). The sides are lighter and more yellowish, while the underside of the head and body are bright yellow, yellow white, or bright white. The rear edge of its caudal fin is rounded. The anal fin has anywhere between 24 and 27 constituent rays, more than that of other bullheads. The yellow bullhead can be easily distinguished from ''A. nebulosus'' and the black bullhead (''A. melas'') by the group of white barbels or "whiskers" under its chin. The pectoral spines are barbed posteriorly like those of the brown bullhead. Unlike flathead catfish (''Pylodictis olivaris''), there are no lateral extensions present on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
White Bullhead
The white bullhead (''Ameiurus catus''), also known as the white catfish, is a member of the family Ictaluridae of the order Siluriformes. Distribution The white bullhead is native to river systems of the Eastern United States from the Hudson River in New York to the Peace River in Florida and west to the Apalachicola River, Florida. White bullheads may have migrated naturally into Connecticut rivers as a result of the white bullhead's salt tolerance. Elsewhere, the white bullhead has been widely introduced as a food and game fish, notably into California waters as a result of intentional stocking near Stockton in 1874. It has additionally become established in the Columbia River basin and in Puerto Rico as an introduced species. It was reportedly introduced to the Philippines but did not become established there. Escapees from fee-fishing ponds and stocked lakes have led to the establishment of white bullhead in Missouri. Description ''Ameiurus catus '' has a head wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Channel Catfish
The channel catfish (''Ictalurus punctatus''), known informally as the "channel cat", is a species of catfish native to North America. They are North America's most abundant catfish species, and the official state fish of Kansas, Missouri, Nebraska and Tennessee. The channel catfish is the most fished species of catfish in the United States, with around 8 million anglers angling them per year. The popularity of channel catfish for food has contributed to the rapid expansion of this species' aquaculture in the United States. It has also been widely introduced to Europe, Asia and South America, and many countries consider it an invasive species. Evolution The channel catfish appears to be a rather old species that has persisted for nearly 20 million years, as fossil remains assigned to it are abundant in numerous geological formations of central North America from the Miocene onwards. Fossil remains of the channel catfish are known from the Sheep Creek, Runningwater, Valentin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Redear Sunfish
The redear sunfish (''Lepomis microlophus''), also known as the shellcracker, Georgia bream, cherry gill, chinquapin, improved bream, and sun perch, is a freshwater fish in the family Centrarchidae and is native to the southeastern United States. Due to its popularity as a sport fish, it has been widely introduced across North America. Description Redear sunfish generally resemble bluegill except for coloration and somewhat larger maximum size. The redear sunfish also has faint vertical bars traveling downwards from its dorsal. It is dark-colored dorsally and yellow-green ventrally. Unlike bluegill, the male has a cherry-red edge on its operculum; females have orange coloration in this area. The adult fish are between in length. Max length is , compared to a maximum of about for the bluegill. Redear sunfish on average reach about , also larger than the average bluegill. Habitat and range Redear sunfish are native to the southeastern United States. They range from North ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Bluegill
The bluegill (''Lepomis macrochirus''), sometimes referred to as "bream", "brim", "sunny", or, in Texas, "copper nose", is a species of North American freshwater fish, native to and commonly found in streams, rivers, lakes, ponds and wetlands east of the Rocky Mountains. It is the type species of the genus ''Lepomis'' (true sunfish), from the family (biology), family Centrarchidae (sunfishes, crappies and black basses) in the order (biology), order Centrarchiformes. Bluegills can grow up to long and about . While their color can vary from population to population, they typically have a very distinctive coloring, with deep blue and purple on the face and gill cover, dark olive-colored bands down the side, and a fiery orange to yellow belly. They are omnivorous and will consume anything they can fit in their mouth, but mostly feed on small aquatic insects and baitfishes. The fish are important prey for bass (fish), bass, other larger Centrarchidae, sunfish, northern pike and musk ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Largemouth Bass
The largemouth bass (''Micropterus nigricans'') is a carnivorous, freshwater fish, freshwater, ray-finned fish in the Centrarchidae (sunfish) family, native to the eastern United States, eastern and central United States, southeastern Canada and northern Mexico. It is known by a variety of regional names, such as the widemouth bass, ''bigmouth bass'', ''black bass'', ''largie'', Potter's fish, Florida bass or ''Florida largemouth'', ''green bass'', bucketmouth bass, ''green trout'', growler, Gilsdorf bass, Oswego bass, LMB, and southern largemouth and northern largemouth. The largemouth bass, as it is known today, was first described by French naturalist Georges Cuvier in 1828. A recent study concluded that the correct scientific name for the Florida bass is ''Micropterus salmoides'', while the largemouth bass is ''Micropterus nigricans''. It is the largest species of the black bass, with a maximum recorded length of and an unofficial weight of . The largemouth bass is the Lis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Megawatt
The watt (symbol: W) is the unit of Power (physics), power or radiant flux in the 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 Work (physics), energy transfer. The watt is named in honor of James Watt (1736–1819), an 18th-century Scottish people, Scottish inventor, mechanical engineer, and chemist who improved the Newcomen engine with his own Watt steam engine, steam engine in 1776, which became fundamental for the Industrial Revolution. Overview When an object's velocity is held constant at one meter 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 potential difference of one volt (V), meaning the watt is equivalent to the vo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
