68-718: Gunston Cove is an inlet of the Potomac River , at the confluence of Accotink Creek and Pohick Creek in Northern Virginia . The Cove forms the northern boundary of Mason Neck , once home to the revolutionary hero George Mason and now site of several regional parks and the Mason Neck National Wildlife Refuge . George Mason University 's notable multi-decadal study of water quality and aquatic habitat in Gunston Cove and
136-689: A European spelling of Patawomeck , the Algonquian name of a Native American village on its southern bank. Native Americans had different names for different parts of the river, calling the river above Great Falls Cohongarooton , meaning "honking geese" and "Patawomke" below the Falls, meaning "river of swans". In 1608, Captain John Smith explored the river now known as the Potomac and made drawings of his observations which were later compiled into
204-528: A household in the county was $ 28,916, and the median income for a family was $ 33,813. Males had a median income of $ 24,796 versus $ 18,354 for females. The per capita income for the county was $ 15,696. About 12.60% of families and 16.30% of the population were below the poverty line , including 21.00% of those under age 18 and 18.70% of those age 65 or over. Grant County lies within West Virginia's 2nd congressional district . The current representative of
272-402: A male householder with no spouse present. The average household and family size was 3.49. The median age in the county was 46.3 years with 19.6% of the population under 18. The median income for a household was $ 47,224 and the poverty rate was 12.1%. As of the 2010 United States census , there were 11,937 people, 4,941 households, and 3,435 families living in the county. The population density
340-489: A map and published in London in 1612. This detail from that map shows his rendition of the river that the local tribes had told him was called the "Patawomeck". The spelling of the name has taken many forms over the years from " Patawomeck " (as on Captain John Smith 's map) to "Patomake", "Patowmack", and numerous other variations in the 18th century and now "Potomac". The river's name was officially decided upon as "Potomac" by
408-630: A series of large islands while it heads northeast to Moorefield . At Moorefield, the South Branch is joined by the South Fork South Branch Potomac River and runs north to Old Fields where it is fed by Anderson Run and Stony Run. At McNeill , the South Branch flows into the Trough where it is bound to its west by Mill Creek Mountain (2,119 ft) and to its east by Sawmill Ridge (1,644 ft). This area
476-665: A serpentine path through the eastern Allegheny Mountains. First, it flows northeast by the communities of Bloomington , Luke , and Westernport in Maryland and then on by Keyser , West Virginia to Cumberland , Maryland. At Cumberland, the river turns southeast. 103 miles (166 km) downstream from its source, the North Branch is joined by the South Branch between Green Spring and South Branch Depot , West Virginia from whence it flows past Hancock , Maryland and turns southeast once more on its way toward Washington, D.C. , and
544-724: A water intake 725 feet (220 m) offshore, citing potential harm to Maryland's interests by an increase in Virginia sprawl caused by the project. After years of failed appeals within the Maryland government's appeal processes, in 2000 Virginia took the case to the Supreme Court of the United States , which exercises original jurisdiction in cases between two states. Maryland claimed Virginia lost its riparian rights by acquiescing to MDE's permit process for 63 years (MDE began its permit process in 1933). A Special Master appointed by
612-489: Is a county in the U.S. state of West Virginia . As of the 2020 census , the population was 10,976. Its county seat is Petersburg . The county was created from Hardy County in 1866 and named for Civil War General and the 18th president of the United States Ulysses S. Grant . The territory that became Grant County in 1866 was originally part of Hampshire County , the oldest county formed within
680-733: Is a major river in the Mid-Atlantic region of the United States that flows from the Potomac Highlands in West Virginia to the Chesapeake Bay in Maryland . It is 405 miles (652 km) long, with a drainage area of 14,700 square miles (38,000 km ), and is the fourth-largest river along the East Coast of the United States . More than 6 million people live within its watershed . The river forms part of
748-463: Is at least 3.5 million years old, likely extending back ten to twenty million years before the present when the Atlantic Ocean lowered and exposed coastal sediments along the fall line. This included the area at Great Falls, which eroded into its present form during recent glaciation periods. The stream gradient of the entire river is 0.14%, a drop of 930 m over 652 km. "Potomac" is
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#1732790680393816-825: Is currently re-bounding as a result of the ICPRB 's successful "American Shad Restoration Project" that was begun in 1995. In addition to stocking the river with more than 22 million shad fry, the Project supervised the construction of a fishway that was built to facilitate the passage of adults around the Little Falls Dam on the way to their traditional spawning grounds upstream. *denotes naturalized species; Sources: Striped mullet Mugil cephalus Spot Leiostomus xanthurus Spotted seatrout Cynoscion nebulosus Atlantic Croaker Micropogonias undulatus Grant County, West Virginia Grant County
884-762: Is located on its banks, as is Mount Vernon , the home of "Father of his Country" George Washington . During the American Civil War, the river became the boundary between the Union and the Confederacy , and the Union's largest army, the Army of the Potomac , was named after the river. The Potomac River runs 405 mi (652 km) from Fairfax Stone Historical Monument State Park in West Virginia on
952-701: Is represented in the West Virginia House of Delegates by one Delegate. The Delegate for Grant County is John Paul Hott (R) for district 85. Grant County's government consists the County Administrator and the County Commission. The County Administrator is the county executive that handles all administrative duties for and reports to the County Commission. The position of the Grant County Administrator
1020-402: Is said that President Abraham Lincoln used to escape to the highlands on summer nights to escape the river's stench. In the 1960s, with dense green algal blooms covering the river's surface, President Lyndon Johnson declared the river "a national disgrace" and set in motion a long-term effort to reduce pollution from sewage and restore the beauty and ecology of this historic river. One of
1088-443: Is the habitat to bald eagles . The Trough passes into Hampshire County and ends at its confluence with Sawmill Run south of Glebe and Sector . The South Branch continues north parallel to South Branch River Road ( County Route 8) toward Romney with a number of historic plantation farms adjoining it. En route to Romney, the river is fed by Buffalo Run, Mill Run , McDowell Run, and Mill Creek at Vanderlip . The South Branch
1156-526: Is traversed by the Northwestern Turnpike ( U.S. Route 50 ) and joined by Sulphur Spring Run where it forms Valley View Island to the west of town. Flowing north of Romney, the river still follows the eastern side of Mill Creek Mountain until it creates a horseshoe bend at Wappocomo 's Hanging Rocks around the George W. Washington plantation, Ridgedale . To the west of Three Churches on
1224-545: The Allegheny Plateau to Point Lookout , Maryland, and drains 14,679 sq mi (38,020 km ). The length of the river from the junction of its North and South Branches to Point Lookout is 302 mi (486 km). The river has two sources. The source of the North Branch is at the Fairfax Stone located at the junction of Grant , Tucker , and Preston counties in West Virginia . The source of
1292-807: The Atlantic coastal plain . Once the Potomac drops from the Piedmont to the Coastal Plain at the Atlantic Seaboard fall line at Little Falls , tides further influence the river as it passes through Washington, D.C., and beyond. Salinity in the Potomac River Estuary increases thereafter with distance downstream. The estuary also widens, reaching 11 statute miles (17 km) wide at its mouth, between Point Lookout, Maryland, and Smith Point , Virginia, before flowing into
1360-522: The Board on Geographic Names in 1931. The similarity of the name to the Ancient Greek word for river, potamos , has been noted for more than two centuries but it appears to be due to chance. The Potomac River brings together a variety of cultures throughout the watershed from the coal miners of upstream West Virginia to the urban residents of the nation's capital and, along the lower Potomac,
1428-516: The Chesapeake Bay . The exact location of the South Branch's source is northwest of Hightown along U.S. Route 250 on the eastern side of Lantz Mountain (3,934 ft) in Highland County. From Hightown, the South Branch is a small meandering stream that flows northeast along Blue Grass Valley Road through the communities of New Hampden and Blue Grass . At Forks of Waters , the South Branch joins with Strait Creek and flows north across
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#17327906803931496-1545: The Fall Line . This 108-mile (174-km) stretch encompasses the Potomac from a short distance below the Washington, DC - Montgomery County line, just downstream of the Little Falls of the Potomac River , to the Chesapeake Bay . Along the way the following tributaries drain into the Potomac: Pimmit Run , Gulf Branch , Donaldson Run , Windy Run , Spout Run , Maddox Branch , Foundry Branch , Rock Creek , Rocky Run, Tiber Creek , Roaches Run, Washington Channel , Anacostia River , Four Mile Run , Oxon Creek , Hunting Creek , Broad Creek , Henson Creek, Swan Creek, Piscataway Creek , Little Hunting Creek , Dogue Creek , Accotink Creek , Pohick Creek , Pomonkey Creek , Occoquan River , Neabsco Creek , Powell's Creek , Mattawoman Creek , Chicamuxen Creek , Quantico Creek , Little Creek , Chopawamsic Creek , Tank Creek , Aquia Creek , Potomac Creek , Nanjemoy Creek , Chotank Creek , Port Tobacco River , Popes Creek , Gambo Creek , Clifton Creek , Piccowaxen Creek , Upper Machodoc Creek , Wicomico River , Cobb Island , Monroe Creek , Mattox Creek , Popes Creek , Breton Bay, Leonardtown , St. Marys River , Yeocomico River , Coan River , and Hull Creek . The river itself
1564-563: The Interstate Commission on the Potomac River Basin . The compact was amended in 1970 to include coordination of water supply issues and land use issues related to water quality. Beginning in the 19th century, with increasing mining and agriculture upstream and urban sewage and runoff downstream, the water quality of the Potomac River deteriorated. This created conditions of severe eutrophication . It
1632-619: The US Geological Survey and the Fish and Wildlife Service , began to identify fish in the Potomac and tributaries that exhibited "intersex" characteristics, as a result of endocrine disruption caused by some form of pollution. On November 13, 2007, the Potomac Conservancy, an environmental group, issued the river a grade of "D-plus", citing high levels of pollution and the reports of " intersex " fish. Since then,
1700-547: The 1980s, through sewage plant upgrades and restrictions on phosphorus in detergents. By the end of the 20th century, notable success had been achieved, as massive algal blooms vanished and recreational fishing and boating rebounded. Still, the aquatic habitat of the Potomac River and its tributaries remain vulnerable to eutrophication, heavy metals , pesticides and other toxic chemicals, over-fishing, alien species , and pathogens associated with fecal coliform bacteria and shellfish diseases. In 2005 two federal agencies,
1768-404: The 4,941 households, 29.3% had children under the age of 18 living with them, 56.3% were married couples living together, 8.3% had a female householder with no husband present, 30.5% were non-families, and 25.7% of all households were made up of individuals. The average household size was 2.39 and the average family size was 2.84. The median age was 44.0 years. The median income for a household in
1836-702: The Chesapeake Bay. The source of the North Branch Potomac River is at the Fairfax Stone located at the junction of Grant , Tucker and Preston counties in West Virginia. From the Fairfax Stone, the North Branch Potomac River flows 27 mi (43 km) to the man-made Jennings Randolph Lake , an impoundment designed for flood control and emergency water supply. Below the dam, the North Branch cuts
1904-437: The Potomac and its North Branch since both states' original colonial charters grant the entire river rather than half of it as is normally the case with boundary rivers. In its first state constitution adopted in 1776, Virginia ceded its claim to the entire river but reserved free use of it, an act disputed by Maryland. Both states acceded to the 1785 Mount Vernon Compact and the 1877 Black-Jenkins Award which granted Maryland
1972-571: The Potomac as its principal source of drinking water with the opening of the Washington Aqueduct in 1864, using a water intake constructed at Great Falls. An average of approximately 486 million US gallons (1,840,000 m ) of water is withdrawn daily from the Potomac in the Washington area for water supply , providing about 78 percent of the region's total water usage, this amount includes approximately 80 percent of
2040-986: The Potomac from just above Harpers Ferry in West Virginia down to Little Falls, Maryland on the border between Maryland and Washington, DC. Along the way the following tributaries drain into the Potomac: Antietam Creek , Shenandoah River , Catoctin Creek (Virginia) , Catoctin Creek (Maryland) , Tuscarora Creek , Monocacy River , Little Monocacy River , Broad Run , Goose Creek , Broad Run , Horsepen Branch, Little Seneca Creek , Tenmile Creek , Great Seneca Creek , Old Sugarland Run, Muddy Branch , Nichols Run, Watts Branch , Limekiln Branch, Carroll Branch, Pond Run, Clarks Branch, Mine Run Branch, Difficult Run , Bullneck Run, Rock Run , Scott Run, Dead Run, Turkey Run, Cabin John Creek , Minnehaha Branch, and Little Falls Branch . The Tidal Potomac River lies below
2108-411: The Potomac, including bass , muskellunge , pike , walleye . The northern snakehead , an invasive species resembling the native bowfin , lamprey , and American eel , was first seen in 2004. Many species of sunfish are also present in the Potomac and its headwaters. Although rare, bull sharks can be found. After having been depressed for many decades, the river's population of American shad
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2176-545: The South Branch continues north through the Monongahela National Forest to Upper Tract where it joins with three sizeable streams: Reeds Creek, Mill Run, and Deer Run. Between Big Mountain (2,582 ft) and Cave Mountain (2,821 ft), the South Branch bends around the Eagle Rock (1,483 ft) outcrop and continues its flow northward into Grant County . Into Grant, the South Branch follows
2244-724: The South Branch is located near Hightown in northern Highland County , Virginia. The river's two branches converge just east of Green Spring in Hampshire County , West Virginia, to form the Potomac. As it flows from its headwaters down to the Chesapeake Bay, the Potomac traverses five geological provinces: the Appalachian Plateau , the Ridge and Valley , the Blue Ridge , the Piedmont Plateau , and
2312-521: The South Branch of the Potomac River crested at 22.6 feet during the incident. Flood stage in the shallow riverbed was only 7 feet. According to the United States Census Bureau , the county has a total area of 480 square miles (1,200 km ), of which 477 square miles (1,240 km ) is land and 2.9 square miles (7.5 km ) (0.6%) is water. As of the 2020 census , there were 10,976 people and 4,147 households residing in
2380-514: The Supreme Court to investigate recommended the case be settled in favor of Virginia, citing the language in the 1785 Compact and the 1877 Award. On December 9, 2003, the Court agreed in a 7–2 decision. The original charters are silent as to which branch from the upper Potomac serves as the boundary, but this was settled by the 1785 Compact. When West Virginia seceded from Virginia in 1863,
2448-518: The Virginia side of the river, it was not completed until 1802. Financial troubles led to the closure of the canal in 1830. The Chesapeake and Ohio Canal operated along the banks of the Potomac in Maryland from 1831 to 1924 and also connected Cumberland to Washington, D.C. This allowed freight to be transported around the rapids known as the Great Falls of the Potomac River , as well as many other, smaller rapids. Washington, D.C. began using
2516-507: The Virginia/West Virginia border into Pendleton County . The river then travels on a northeastern course along the western side of Jack Mountain (4,045 ft), followed by Sandy Ridge (2,297 ft) along U.S. Route 220 . North of the confluence of the South Branch with Smith Creek, the river flows along Town Mountain (2,848 ft) around Franklin at the junction of U.S. Route 220 and U.S. Route 33 . After Franklin,
2584-510: The adjacent Potomac River has illustrated how a tidal freshwater ecosystem can gradually recover from human-induced eutrophication following management of upstream nutrient pollution. 38°40′10″N 77°08′55″W / 38.66944°N 77.14861°W / 38.66944; -77.14861 This Fairfax County, Virginia state location article is a stub . You can help Misplaced Pages by expanding it . Potomac River The Potomac River ( / p ə ˈ t oʊ m ə k / )
2652-651: The battles of Antietam (September 17, 1862) and Gettysburg (July 1–3, 1863). Confederate General Jubal Early crossed the river in July 1864 on his attempted raid on the nation's capital. The river not only divided the Union from the Confederacy, but also gave name to the Union's largest army, the Army of the Potomac . The Patowmack Canal was intended by George Washington to connect the Tidewater region near Georgetown with Cumberland , Maryland. Started in 1785 on
2720-473: The borders between Maryland and Washington, D.C. , on the left descending bank, and West Virginia and Virginia on the right descending bank. Except for a small portion of its headwaters in West Virginia, the North Branch Potomac River is considered part of Maryland to the low-water mark on the opposite bank. The South Branch Potomac River lies completely within the state of West Virginia except for its headwaters , which lie in Virginia. All navigable parts of
2788-416: The catching near Fletcher's Boat House of a Striped Bass estimated to weigh 35 lb (16 kg) was seen as a further indicator of the continuing improvement in the health of the river. The average daily flow during the water years 1931–2018 was 11,498 cubic feet (325.6 m ) /s. The highest average daily flow ever recorded on the Potomac at Little Falls, Maryland (near Washington, D.C.),
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2856-445: The county was $ 35,593 and the median income for a family was $ 46,193. Males had a median income of $ 35,000 versus $ 24,643 for females. The per capita income for the county was $ 19,358. About 10.6% of families and 12.9% of the population were below the poverty line , including 15.0% of those under age 18 and 12.8% of those age 65 or over. As of the census of 2000, there were 11,299 people, 4,591 households, and 3,273 families living in
2924-420: The county. The population density was 24 people per square mile (9.3 people/km ). There were 6,105 housing units at an average density of 13 units per square mile (5.0 units/km ). The racial makeup of the county was 98.33% White , 0.67% Black or African American , 0.26% Indigenous American , 0.14% Asian , 0.02% Pacific Islander , 0.13% from other races , and 0.45% from two or more races. 0.55% of
2992-484: The county. There were 5,598 housing units in Preston. The racial makeup of the county was 95.6% White , 0.8% African American , 0.2% Asian , 0.2% Native American , 0.5% from other races , and 2.8% from two or more races . Hispanics or Latinos of any race were 0.8% of the population. Of the 12,510 households, 48.9% were married couples living together, 24.3% had a female householder with no spouse present, 23.1% had
3060-458: The district is Alex Mooney (R). Politically, Grant County was historically a major outlier in West Virginia. While the rest of the state did not become a Republican bastion until the 21st century after having leaned heavily Democratic between the New Deal and Bill Clinton ’s presidency, Grant County has always been among the most strongly Republican counties in the country. Since Grant County
3128-503: The drinking water consumed by the region's estimated 6.1 million residents. As a result of damaging floods in 1936 and 1937, the Army Corps of Engineers proposed the Potomac River basin reservoir projects , a series of dams that were intended to regulate the river and to provide a more reliable water supply. One dam was to be built at Little Falls, just north of Washington, backing its pool up to Great Falls. Just above Great Falls,
3196-506: The much larger Seneca Dam was proposed whose reservoir would extend to Harpers Ferry. Several other dams were proposed for the Potomac and its tributaries. Operational Non-Operational Planned, but never built When detailed studies were issued by the Corps in the 1950s, they met sustained opposition, led by U.S. Supreme Court Justice William O. Douglas , resulting in the plans' abandonment. The only dam project that did get built
3264-651: The nation's capital was to be located on the river. The 1859 siege of Harper's Ferry at the river's confluence with the Shenandoah was a precursor to numerous epic battles of the American Civil War in and around the Potomac and its tributaries, such as the 1861 Battle of Ball's Bluff and the 1862 Battle of Shepherdstown . General Robert E. Lee crossed the river, thereby invading the North and threatening Washington, D.C., twice in campaigns climaxing in
3332-441: The population were Hispanic or Latino of any race. There were 4,591 households, out of which 30.20% had children under the age of 18 living with them, 59.50% were married couples living together, 8.20% had a female householder with no husband present, and 28.70% were non-families. 24.50% of all households were made up of individuals, and 11.30% had someone living alone who was 65 years of age or older. The average household size
3400-410: The present boundaries of West Virginia, in 1754. In 1786, Hardy County was formed from the southern portion of Hampshire County. The county's boundaries were relatively stable from 1788 until 1866, when Grant County was formed from the western portion of Hardy. The first counties formed in the state following the admission of West Virginia to the Union were Grant and Mineral in 1866, the latter formed from
3468-478: The question of West Virginia's succession in title to the lands between the branches of the river was raised, as well as title to the river itself. Claims by Maryland to West Virginia land north of the South Branch (all of Mineral and Grant Counties and parts of Hampshire , Hardy , Tucker and Pendleton Counties) and by West Virginia to the Potomac's high-water mark were rejected by the Supreme Court in two separate decisions in 1910. A variety of fish inhabit
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#17327906803933536-677: The river bank-to-bank from the low-water mark on the Virginia side while permitting Virginia full riparian rights short of obstructing navigation. From 1957 to 1996, the Maryland Department of the Environment (MDE) routinely issued permits applied for by Virginia entities concerning the use of the Potomac. However, in 1996 the MDE denied a permit submitted by the Fairfax County Water Authority to build
3604-502: The river has improved with a reduction in nutrient runoff, return of fish populations, and land protection along the river. As a result, the same group issued a grade of "B" for 2017 and 2018. In March 2019, the Potomac Riverkeeper Network launched a laboratory boat dubbed the "Sea Dog", which will be monitoring water quality in the Potomac and providing reports to the public on a weekly basis; in that same month,
3672-625: The river were designated as a National Recreation Trail in 2006, and the National Oceanic and Atmospheric Administration designated an 18-square-mile (47 km ) portion of the river in Charles County , Maryland, as the Mallows Bay–Potomac River National Marine Sanctuary in 2019. The river has significant historical and political significance, as the nation's capital of Washington, D.C.
3740-628: The section of the Potomac River from the confluence of its North and South Branches through Opequon Creek near Shepherdstown, West Virginia . Along the way the following tributaries drain into the Potomac: North Branch Potomac River , South Branch Potomac River , Town Creek , Little Cacapon River , Sideling Hill Creek , Cacapon River , Sir Johns Run , Warm Spring Run , Tonoloway Creek , Fifteenmile Creek , Sleepy Creek , Cherry Run , Back Creek , Conococheague Creek , and Opequon Creek . This section covers
3808-430: The significant pollution control projects at the time was the expansion of the Blue Plains Advanced Wastewater Treatment Plant , which serves Washington and several surrounding communities. Enactment of the 1972 Clean Water Act led to construction or expansion of additional sewage treatment plants in the Potomac watershed. Controls on phosphorus , one of the principal contributors to eutrophication, were implemented in
3876-410: The townships were converted into magisterial districts . Between its establishment and 1870, Grant County was divided into three townships: Grant, Milroy, and Union, which became magisterial districts in 1872. Most of the 47 people killed in the 1985 Election day floods were in Pendleton and Grant counties, according to the National Weather Service . At Franklin , the Pendleton County seat,
3944-456: The vote in any of his four successful campaigns, and Lyndon Johnson only managed 37.8 percent in 1964. Jimmy Carter is the only other Democrat besides LBJ to have cracked the 30 percent barrier. Notably, in 2016, 2020, and 2024, Donald Trump received the highest percentages of the vote ever cast for a presidential candidate in this county. He held Democratic candidates Hillary Clinton , Joe Biden , and Kamala Harris to 10%, 11%, and 10% of
4012-410: The vote, respectively. At the state level, Grant County voted for popular Democratic governor Joe Manchin over his GOP opponent Russ Weeks by over 20 points in 2008 . Grant County is represented in one Senate district with two Senators in the West Virginia Senate . Senate members Senate members Jay Taylor (R) and Randy Smith (R) both serve in West Virginia's 14th Senate district . The county
4080-482: The watermen of Virginia's Northern Neck. Being situated in an area rich in American history and American heritage has led to the Potomac being nicknamed "the Nation's River". George Washington , the first President of the United States , was born in, surveyed, and spent most of his life within, the Potomac basin. All of Washington, D.C., the nation's capital city , also lies within the watershed. The First United States Congress by act of July 16, 1790 stated that
4148-403: The western portion of Hampshire County, and thus adjoining Grant. They were the fifty-first and fifty-second counties in West Virginia, and only Lincoln , Summers , and Mingo were created after them. Beginning in 1863, West Virginia's counties were divided into civil townships , with the intention of encouraging local government. This proved impractical in the heavily rural state, and in 1872
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#17327906803934216-421: The western side of South Branch Mountain , 3,028 feet (923 m), the South Branch creates a series of bends and flows to the northeast by Springfield through Blue's Ford. After two additional horseshoe bends (meanders), the South Branch flows under the old Baltimore and Ohio Railroad mainline between Green Spring and South Branch Depot , and joins the North Branch to form the Potomac. This stretch encompasses
4284-481: The western side of Cave Mountain through the 20-mile (32 km) long Smoke Hole Canyon , until its confluence with the North Fork at Cabins , where it flows east to Petersburg . At Petersburg, the South Branch Valley Railroad begins, which parallels the river until its mouth at Green Spring . In its eastern course from Petersburg into Hardy County , the South Branch becomes more navigable allowing for canoes and smaller river vessels. The river splits and forms
4352-407: Was Jennings Randolph Lake on the North Branch. The Corps built a supplementary water intake for the Washington Aqueduct at Little Falls in 1959. In 1940 Congress passed a law authorizing the creation of an interstate compact to coordinate water quality management among states in the Potomac basin. Maryland, West Virginia, Pennsylvania, Virginia, and the District of Columbia agreed to establish
4420-400: Was 2.43 and the average family size was 2.87. In the county, the population was spread out, with 22.70% under the age of 18, 7.80% from 18 to 24, 27.50% from 25 to 44, 26.80% from 45 to 64, and 15.30% who were 65 years of age or older. The median age was 39 years. For every 100 females there were 97.70 males. For every 100 females age 18 and over, there were 94.50 males. The median income for
4488-508: Was 25.0 inhabitants per square mile (9.7/km ). There were 6,366 housing units at an average density of 13.3 units per square mile (5.1 units/km ). The racial makeup of the county was 97.7% white, 0.7% black or African American, 0.2% Asian, 0.2% American Indian, 0.5% from other races, and 0.9% from two or more races. Those of Hispanic or Latino origin made up 1.0% of the population. In terms of ancestry, 26.9% were German , 15.0% were American , 9.3% were Irish , and 5.3% were English . Of
4556-455: Was created in 1866, no Democrat has managed to receive 40 percent of the county's vote in any Presidential election. The only Republican to ever lose Grant County has been William Howard Taft in 1912 when the GOP was divided and Progressive Theodore Roosevelt claimed the majority of the county's vote. The county's Republican bent has held even in national Democratic landslides. Franklin Delano Roosevelt never tallied more than 26.8 percent of
4624-487: Was in March 1936 when it reached 426,000 cubic feet (12,100 m ) /s. The lowest average daily flow ever recorded at the same location was 601.0 cubic feet (17.02 m ) /s in September 1966 The highest crest of the Potomac ever registered at Little Falls was 28.10 ft, on March 19, 1936; however, the most damaging flood to affect Washington, DC and its metropolitan area was that of October 1942. For 400 years Maryland and Virginia have disputed control of
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