The Potomac River ( ) is in the Mid-Atlantic region of the United States and flows from the Potomac Highlands in West Virginia to 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. More than 6 million people live within its watershed.
The river forms the boundary separating the jurisdictions on its left descending bank (Maryland and Washington, D.C.) from those on its right descending bank (West Virginia and Virginia). Except for a small portion of its...
Click any point for details. Sections without stored geometry are drawn as straight put-in → take-out lines — actual courses follow the river.