The Potomac River drains the Mid-Atlantic United States, flowing from the Potomac Highlands into Chesapeake Bay. 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. Over 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 with its mouth of the Bay at the south end 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 and all of District of Columbia.
Colonial Beach, Virginia (CBVA) is a river and beach town located in the northwestern part of Westmoreland County on Virginia's Northern Neck peninsula. It is bounded by the Potomac River, Monroe Bay and Monroe Creek. It is located 65 mi (105 km) from Washington, D.C.; 70 mi (110 km) from the state capital of Richmond; and 35 nautical miles from the Chesapeake Bay.
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 St. Marys River is a 22.3-mile-long (35.9 km) river in southern Maryland in the United States. It rises in southern St. Mary's County, and flows to the southeast through Great Mills, widening into a tidal estuary near St. Mary's City, approximately 2 miles (3 km) wide at its mouth on the north bank of the Potomac River, near the Chesapeake Bay to the east.
The Pocomoke River stretches approximately 66 miles (106 km) from southern Delaware through southeastern Maryland in the United States. At its mouth, the river is essentially an arm of Chesapeake Bay, whereas the upper river flows through a series of relatively inaccessible wetlands called the Great Cypress Swamp, largely populated by Loblolly Pine, Red Maple and Bald Cypress. The river is the easternmost river that flows into Chesapeake Bay. "Pocomoke", though traditionally interpreted as "dark water" by local residents, is now agreed by scholars of the Algonquian languages to be derived from the words for "broken ground."
The Rappahannock River is a river in eastern Virginia, in the United States, approximately 195 miles (314 km) in length. It traverses the entire northern part of the state, from the Blue Ridge Mountains in the west where it rises, across the Piedmont to the Fall Line, and onward through the coastal plain to flow into the Chesapeake Bay, south of the Potomac River.
The Patapsco River mainstem is a 39-mile-long (63 km) river in central Maryland which flows into the Chesapeake Bay. The river's tidal portion forms the harbor for the city of Baltimore. With its South Branch, the Patapsco forms the northern border of Howard County, Maryland. The name "Patapsco" is derived from the Algonquian pota-psk-ut, which translates to "backwater" or "tide covered with froth."
The Seven Foot Knoll Light was built in 1855 and is the oldest screw-pile lighthouse in Maryland. It was located atop Seven Foot Knoll in the Chesapeake Bay until it was replaced by a modern navigational aid and relocated to Baltimore's Inner Harbor as a museum exhibit.
Cherry Run is a 7.2-mile-long (11.6 km) meandering stream that forms the northern section of the boundary between Morgan and Berkeley counties in West Virginia's Eastern Panhandle. While it is mostly non-navigable, Cherry Run provides many pools of varying depths for fishing and swimming. As a tributary of the Potomac River, Cherry Run is part of the Potomac and Chesapeake Bay watersheds.
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.
Helen Delich Bentley Port of Baltimore is a shipping port along the tidal basins of the three branches of the Patapsco River in Baltimore, Maryland on the upper northwest shore of the Chesapeake Bay. It is the nation's largest port facilities for specialized cargo and passenger facilities. It is operated by the Maryland Port Administration (MPA), a unit of the Maryland Department of Transportation.
Curtis Creek is a tidal creek located in Baltimore City and Anne Arundel County, Maryland. It is a tributary of the cove Curtis Bay and is adjacent to the west of the South Baltimore community of Curtis Bay. The creek begins at the confluence of Furnace Creek and Marley Creek in northern Anne Arundel County, Maryland and flows north about 2.5 miles (4.0 km) into Curtis Bay which opens to the east into the main branch and stem of the Patapsco River and Chesapeake Bay.
USCGC Cuyahoga (WIX-157) was an Active-class patrol boat built in 1927 which saw action in World War II. Cuyahoga sank after a night-time collision in the Chesapeake Bay while on patrol in 1978. She was later raised and re-sunk as an artificial reef off the Virginia coast and is a popular recreational dive site.
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."
Designated in 1991, the Chesapeake Bay National Estuarine Research Reserve - Virginia (CBNERR-VA) is one of 29 protected areas that make up the National Estuarine Research Reserve System (NERRS). Established to promote informed management of the nation's estuaries and coastal habitats, national estuarine research reserves inspire solutions for healthy coasts and maintain strong local economies, effectively functioning as America's bridge between freshwater and salt.
Gwynns Falls is a 24.9-mile-long (40.1 km) stream located in Baltimore County and Baltimore City, Maryland. Its headwaters are located in Reisterstown in Baltimore County, and the stream flows southeast, entering the city of Baltimore and emptying into the Middle Branch of the Patapsco River. The Patapsco drains into the Chesapeake Bay. The watershed area of Gwynns Falls covers 66 square miles (170 km2), with 133 miles (214 km) of streams.
The Broadneck Peninsula is an area in Anne Arundel County, Maryland. The area is north of the Severn River, south of the Magothy River and west of the Chesapeake Bay. At the lower end of the Broadneck Peninsula is the 4.3 mile Chesapeake Bay Bridge.
Harris Creek (Maryland) is a tidal creek on the eastern shore of Maryland. It is a location for oyster restoration.
