The Potomac River 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 km2), and is the fourth-largest river along the East Coast of the United States and the 21st-largest in the United States. More than 5 million people live within its watershed.
The Chesapeake Bay is the largest estuary in the United States. The Bay is located in the Mid-Atlantic region and is primarily separated from the Atlantic Ocean by the Delmarva Peninsula, including parts of the Eastern Shore of Maryland, the Eastern Shore of Virginia, and the state of Delaware. The mouth of the Bay at its southern point is located between Cape Henry and Cape Charles. With its northern portion in Maryland and the southern part in Virginia, the Chesapeake Bay is a very important feature for the ecology and economy of those two states, as well as others surrounding within its watershed. More than 150 major rivers and streams flow into the Bay's 64,299-square-mile (166,534 km2) drainage basin, which covers parts of six states, New York, Pennsylvania, Delaware, Maryland, Virginia, and West Virginia, and all of Washington, D.C.
The James River is a river in Virginia that begins in the Appalachian Mountains and flows from the confluence of the Cowpasture and Jackson Rivers in Botetourt County 348 miles (560 km) to the Chesapeake Bay. The river length extends to 444 miles (715 km) if the Jackson River is included, the longer of its two headwaters. It is the longest river in Virginia. Jamestown and Williamsburg, Virginia's first colonial capitals, and Richmond, Virginia's current capital, lie on the James River.
The Patuxent River is a tributary of the Chesapeake Bay in the state of Maryland. There are three main river drainages for central Maryland: the Potomac River to the west passing through Washington, D.C., the Patapsco River to the northeast passing through Baltimore, and the Patuxent River between the two. The 908-square-mile (2,352 km2) Patuxent watershed had a rapidly growing population of 590,769 in 2000. It is the largest and longest river entirely within Maryland, and its watershed is the largest completely within the state.
The Potomac Company was created in 1785 to make improvements to the Potomac River and improve its navigability for commerce. The project is perhaps the first conceptual seed planted in the minds of the new American capitalists in what became a flurry of transportation infrastructure projects, most privately funded, that drove wagon road turnpikes, navigations, and canals, and then as the technology developed, investment funds for railroads across the rough country of the Appalachian Mountains.
The Province of Maryland was an English and later British colony in North America from 1634 until 1776, when the province was one of the Thirteen Colonies that joined in supporting the American Revolution against Great Britain. In 1781, Maryland was the 13th signatory to the Articles of Confederation. The province's first settlement and capital was in St. Mary's City, located at the southern end of St. Mary's County, a peninsula in the Chesapeake Bay bordered by four tidal rivers.
The Monocacy River is a free-flowing left tributary to the Potomac River, which empties into the Atlantic Ocean via the Chesapeake Bay. The river is 58.5 miles (94.1 km) long, with a drainage area of about 970 square miles (2,500 km2). It is the largest Maryland tributary to the Potomac.
The Gunpowder River is a 6.8-mile-long (10.9 km) tidal inlet on the western side of the Chesapeake Bay in Maryland, United States. It is formed by the joining of two freshwater rivers, Gunpowder Falls and Little Gunpowder Falls.
Great Falls is a series of rapids and waterfalls on the Potomac River, 14 miles (23 km) upstream from Washington, D.C., on the border of Montgomery County, Maryland and Fairfax County, Virginia. The Potomac and the falls themselves are legally entirely within Maryland, as the state's boundary follows the south bank of the river.
Mather Gorge is a river gorge south and just downriver of Great Falls in the state of Maryland bordering Virginia. The Maryland land side of the gorge is Bear Island, part of the Chesapeake and Ohio Canal National Historical Park, and the Virginia side is part of Great Falls Park. Both parks are National Park Service sites. The gorge is named after Stephen Mather, the first director of the National Park Service.
Mattawoman Creek is a 30.0-mile-long (48.3 km) coastal-plain tributary to the tidal Potomac River with a mouth at Indian Head, Maryland, 20 miles (32 km) downstream of Washington, D.C. It comprises a 23-mile (37 km) river flowing through Prince George's and Charles counties and a 7-mile (11 km) tidal-freshwater estuary in Charles County. About three-fourths of its 94-square-mile (240 km2) watershed lies in Charles County, with the remainder in Prince George's County immediately to the north.
The Wye River is a 16.3-mile-long (26.2 km) tributary of the Chesapeake Bay, on the Eastern Shore of Maryland. It was named by the Lloyd family, Edward Lloyd (delegate), and Edward Lloyd, after the River Wye in the United Kingdom. It falls within Queen Anne's County and Talbot County, and joins the Miles River near its mouth to the Eastern Bay. The river is popular with recreational boaters because of its secluded anchorages, fishing, crabbing and proximity to the tourist attractions of St. Michaels, Maryland. Like many rivers on the Chesapeake Bay, the Wye is largely tidal. The river's features include the 2,800-acre (11 km2) Wye Island, most of which is part of the Wye Island Natural Resources Management Area, managed by the Maryland Department of Natural Resources State Forest and Park Service. William Paca, the third governor of Maryland and a signatory to the Declaration of Independence, once owned the island.
The South River is a 10-mile-long (16 km) tributary of the Chesapeake Bay in Anne Arundel County, Maryland in the United States. It lies south of the Severn River, east of the Patuxent River, and north of the West River and Rhode River, and drains to the Chesapeake Bay.
In Maryland and Washington, D.C., the effects of Hurricane Isabel were among the most damaging from a tropical cyclone in the respective metropolitan area. Hurricane Isabel formed from a tropical wave on September 6, 2003, in the tropical Atlantic Ocean. It moved northwestward, and within an environment of light wind shear and warm waters, it steadily strengthened to reach peak winds of 165 miles per hour (266 km/h) on September 11. After fluctuating in intensity for four days, Isabel gradually weakened and made landfall on the Outer Banks of North Carolina with winds of 105 miles per hour (169 km/h) on September 18. It quickly weakened over land and became extratropical over western Pennsylvania the next day.
The Yaocomico, also spelled Yaocomaco, were an Algonquian-speaking Native American group who lived along the north bank of the Potomac River near its confluence with the Chesapeake Bay in the 17th century. They were related to the Piscataway, the dominant nation north of the Potomac.
The Cobb Point Bar Light was a screw-pile lighthouse located in the Potomac River.
Mallows Bay is a small bay on the Maryland side of the Potomac River in Charles County, Maryland, United States. The bay is the location of what is regarded as the "largest shipwreck fleet in the Western Hemisphere" and is described as a "ship graveyard."
St. Inigoes, sometimes called St. Inigoes Shores, is a small, rural, unincorporated farming, fishing and crabbing community at the southern end of St. Mary's County in the U.S. state of Maryland that is undergoing a transition to small residential subdevelopment plots. Its western side is bordered by a number of coves and creeks that are connected to the St. Marys River, a brackish tidal tributary, near where it feeds into the mouth of the Potomac River and close to its entry point into the Chesapeake Bay.
St. Mary's Peninsula is part of the Western Shore region of Maryland. From the Charles County line, just north of Charlotte Hall, Maryland, to the southern tip of St. Mary's County at Point Lookout State Park, St. Mary's Peninsula stretches about 39 miles (63 km). It is bordered on the southwest by the Potomac River, on the north and east by the Patuxent River and on the east by Chesapeake Bay. From the end of these two rivers, the peninsula has about 15 miles of shoreline along the Bay's western shore from Lexington Park, Maryland to Point Lookout. Its shoreline stretches for a total of 536 miles along the Patuxent River, Potomac River and the Chesapeake Bay.