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Potomac River – Map & Details

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Located along the mid-Atlantic coast of the United States, and flowing into the Chesapeake Bay, the Potomac River flows through Washington DC, Virginia, Maryland, Pennsylvania and West Virginia.

The Potomac River is 405 miles (652 km) in length, and forms part of the border between Washington DC and Virginia on the left bank, as well as Maryland and Virginia on the right.

With a drainage area of about 14,700 square miles (38,000 square km), the river is the fourth largest river along the Atlantic coast of the United States.

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This page was last updated on June 16, 2020.