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Shenandoah River
The Shenandoah River is the principal tributary of the Potomac River, long with two River fork, forks approximately long each,U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed August 15, 2011 in the U.S. states of Virginia and West Virginia. The river and its Tributary, tributaries drain the central and lower Shenandoah Valley and the Page Valley in the Appalachian Mountains, Appalachians on the west side of the Blue Ridge Mountains, in northwestern Virginia and the eastern panhandle of West Virginia. There is a hydroelectric plant along the Shenandoah River constructed in 2014 by Dominion Energy, Dominion. Course The Shenandoah River is formed northeast of Front Royal, Virginia, Front Royal near Riverton, by the confluence (geography), confluence of the South Fork Shenandoah River, South Fork and the North Fork Shenandoah River, North Fork. It flows northeast across Warren County, Virginia, Warren County, passing unde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harpers Ferry, West Virginia
Harpers Ferry is a historic town in Jefferson County, West Virginia, United States. The population was 269 at the 2020 United States census. Situated at the confluence of the Potomac River, Potomac and Shenandoah River, Shenandoah Rivers in the lower Shenandoah Valley, where Maryland, Virginia, and West Virginia meet, it is the easternmost town in West Virginia as well as its lowest point above sea level. Originally named Harper's Ferry after an 18th-century ferry owner, the town lost its apostrophe in 1891 in an update by the United States Board on Geographic Names. It gained fame in 1859 when abolitionist John Brown (abolitionist), John Brown led John Brown's raid on Harpers Ferry, a raid on the Harpers Ferry Armory in a doomed effort to start a slave rebellion in Virginia and across the South. During the American Civil War, the town became the northernmost point of Confederate States of America, Confederate-controlled territory, and changed hands several times due to its strat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Appalachian Mountains
The Appalachian Mountains, often called the Appalachians, are a mountain range in eastern to northeastern North America. The term "Appalachian" refers to several different regions associated with the mountain range, and its surrounding terrain. The general definition used is one followed by the United States Geological Survey and the Geological Survey of Canada to describe the respective countries' Physiographic region, physiographic regions. The U.S. uses the term Appalachian Highlands and Canada uses the term Appalachian Uplands; the Appalachian Mountains are not synonymous with the Appalachian Plateau, which is one of the provinces of the Appalachian Highlands. The Appalachian range runs from the Newfoundland (island), Island of Newfoundland in Canada, southwestward to Central Alabama in the United States; south of Newfoundland, it crosses the 96-square-mile (248.6 km2) archipelago of Saint Pierre and Miquelon, an overseas collectivity of France, meaning it is technica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agriculture
Agriculture encompasses crop and livestock production, aquaculture, and forestry for food and non-food products. Agriculture was a key factor in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that enabled people to live in the cities. While humans started gathering grains at least 105,000 years ago, nascent farmers only began planting them around 11,500 years ago. Sheep, goats, pigs, and cattle were domesticated around 10,000 years ago. Plants were independently cultivated in at least 11 regions of the world. In the 20th century, industrial agriculture based on large-scale monocultures came to dominate agricultural output. , small farms produce about one-third of the world's food, but large farms are prevalent. The largest 1% of farms in the world are greater than and operate more than 70% of the world's farmland. Nearly 40% of agricultural land is found on farms larger than . However, five of every six farm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limestone
Limestone is a type of carbonate rock, carbonate sedimentary rock which is the main source of the material Lime (material), lime. It is composed mostly of the minerals calcite and aragonite, which are different Polymorphism (materials science), crystal forms of calcium carbonate . Limestone forms when these minerals Precipitation (chemistry), precipitate out of water containing dissolved calcium. This can take place through both biological and nonbiological processes, though biological processes, such as the accumulation of corals and shells in the sea, have likely been more important for the last 540 million years. Limestone often contains fossils which provide scientists with information on ancient environments and on the evolution of life. About 20% to 25% of sedimentary rock is carbonate rock, and most of this is limestone. The remaining carbonate rock is mostly Dolomite (rock), dolomite, a closely related rock, which contains a high percentage of the mineral Dolomite (mine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reflecting Cavern Lake
Reflection or reflexion may refer to: Science and technology * Reflection (physics), a common wave phenomenon ** Specular reflection, mirror-like reflection of waves from a surface *** Mirror image, a reflection in a mirror or in water ** Diffuse reflection, where ray incident on the surface is scattered ** Retroreflection, technology for returning light in the direction from which it came ** Signal reflection, in signal transmission * Elastic scattering, a process in nuclear and particle physics * Reflection nebula, a nebula that is extended and has no boundaries * Reflection seismology or seismic reflection, a method of exploration geophysics Mathematics * Reflection principle, in set theory * Point reflection, a reflection across a point * Reflection (mathematics), a transformation of a space * Reflection formula, a relation in a function * Reflective subcategory, in category theory * Reflection symmetry, the property of being unchanged by a reflection Computing * Reflec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Confluence
In geography, a confluence (also ''conflux'') occurs where two or more watercourses join to form a single channel (geography), channel. A confluence can occur in several configurations: at the point where a tributary joins a larger river (main stem); or where two streams meet to become the river source, source of a river of a new name (such as the confluence of the Monongahela River, Monongahela and Allegheny River, Allegheny rivers, forming the Ohio River); or where two separated channels of a river (forming a river island) rejoin downstream from their point of separation. Scientific study Confluences are studied in a variety of sciences. Hydrology studies the characteristic flow patterns of confluences and how they give rise to patterns of erosion, bars, and scour pools. The water flows and their consequences are often studied with mathematical models. Confluences are relevant to the distribution of living organisms (i.e., ecology) as well; "the general pattern [downstream o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jefferson County, West Virginia
Jefferson County is the easternmost county in the U.S. state of West Virginia. It is located in the Shenandoah Valley in the Eastern Panhandle of West Virginia. As of the 2020 census, the population was 57,701. Its county seat is Charles Town. The county was founded in 1801, and today is part of the Washington metropolitan area. History Formation Jefferson County was established on October 26, 1801 from Berkeley County because the citizens of southeastern Berkeley County felt they had to travel too far to the county seat of Martinsburg. Charles Washington, the founder of Charles Town and brother to George Washington, petitioned for a new county to be formed. It was named for Thomas Jefferson, author of the Declaration of Independence and third President of the United States. Virginia previously had a Jefferson County, which is now part of Kentucky. Accordingly, in the State records of Virginia, there are listings for Jefferson County from 1780 to 1792 and Jefferson Co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
State Route 7 (Virginia)
Virginia State Route 7 (VA 7) is a major primary state highway and busy commuter route in northern Virginia, United States. It travels southeast from downtown Winchester to SR 400 (Washington Street) in downtown Alexandria. Its route largely parallels those of the Washington & Old Dominion Trail (W&OD Trail) and the Potomac River. Between its western terminus and Interstate 395 (I-395), SR 7 is part of the National Highway System. In 1968, the Virginia State Highway Commission designated the road as the "Harry Flood Byrd Highway" between Alexandria and Winchester to commemorate Harry F. Byrd Sr. (1887–1966). Route description SR 7 begins downtown in the independent city of Winchester, as East Piccadilly Street at an intersection with U.S. Route 11 (US 11) and US 522, and it continues through the east end of the city, along North East Lane, National Avenue, and finally Berryville Avenue. SR 7 exits the city into surro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clarke County, Virginia
Clarke County is a County (United States), county in the Virginia, Commonwealth of Virginia. As of the 2020 United States census, 2020 census, the population was 14,783. Its county seat is Berryville, Virginia, Berryville. Clarke County is included in the Washington metropolitan area, Washington-Arlington-Alexandria, DC-VA-MD-WV Metropolitan Statistical Area. History The first settlement of the Virginia Colony in the future Clarke County was in 1736 by Thomas Fairfax, 6th Lord Fairfax of Cameron who built a home, Greenway Court, on part of his property, near what is now the village of White Post, Virginia, White Post. White Post was named for the large signpost pointing the way to Lord Fairfax's home. As it lay just west of the Blue Ridge border demarcated under Governor Spotswood at Albany in 1722, the area was claimed along with the rest of the Shenandoah Valley by the Six Nations Iroquois (who had overrun it during the later Beaver Wars in around 1672), until the Treaty of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Interstate 66
Interstate 66 (I-66) is a 76.32 mile east–west Interstate Highway in the East Coast of the United States, eastern United States. The highway runs from an interchange with Interstate 81 in Virginia, I-81 near Middletown, Virginia, on its western end to an interchange with U.S. Route 29 in the District of Columbia, U.S. Route 29 (US 29) in Washington, D.C., at the eastern terminus. The route parallels Virginia State Route 55, State Route 55 (SR 55) from its western terminus at I-81 to Gainesville, Virginia, Gainesville, and U.S. Route 29 in Virginia, US 29 from Gainesville to its eastern terminus in Washington. I-66 is unrelated to U.S. Route 66, US 66, which was located in the Midwest-West region of the United States. The E Street Expressway is a spur from I-66 into the Foggy Bottom neighborhood of Washington, D.C. Route description , - , Virginia, VA , 74.8 , 120.54 , - , Washington, D.C., DC , 1.6 , 2.57 , - , Total , 76.4 , 123.11 V ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Warren County, Virginia
Warren County is a U.S. county located in the Commonwealth of Virginia. The 2020 United States census places Warren County within the Washington-Arlington-Alexandria, DC-VA-MD-WV Metropolitan Statistical Area with a population of 40,727. The county was established in 1836. The county seat is Front Royal. History By 1672, the entire Shenandoah Valley was claimed for hunting by the Iroquois Confederation following the Beaver Wars. Some bands of the Shawnee settled in the area as client groups to the Iroquois and alternately to the Cherokee after 1721. The Iroquois formally sold their entire claim east of the Alleghenies to the Virginia Colony at the Treaty of Lancaster in 1744. Warren County was established in 1836 from Frederick and Shenandoah Counties. At that time the county had a population of 7,000 people, a quarter of which were enslaved. Wedding records show marriages of people born in the 1770s marrying in the 1800s who head households of four to eight "fre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Confluence (geography)
In geography, a confluence (also ''conflux'') occurs where two or more watercourses join to form a single channel. A confluence can occur in several configurations: at the point where a tributary joins a larger river ( main stem); or where two streams meet to become the source of a river of a new name (such as the confluence of the Monongahela and Allegheny rivers, forming the Ohio River); or where two separated channels of a river (forming a river island) rejoin downstream from their point of separation. Scientific study Confluences are studied in a variety of sciences. Hydrology studies the characteristic flow patterns of confluences and how they give rise to patterns of erosion, bars, and scour pools. The water flows and their consequences are often studied with mathematical models. Confluences are relevant to the distribution of living organisms (i.e., ecology) as well; "the general pattern ownstream of confluencesof increasing stream flow and decreasing slopes driv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
