Largest tributaries
Perciformes - Perches
Salmoniformes - Salmons and Trouts
Esociformes - Pikes
Siluriformes - Catfishes
Centrarchiformes - Basses and sunfishes
Cypriniformes - Carps
Acipenseriformes - Sturgeons and Paddlefish
Anabantiformes - Gouramies and snakeheads
Clupeiformes - Herrings
Scorpaeniformes - Mail-cheeked fishes
Anguilliformes - Eels and morays
Moroniformes - Temperate basses
Percopsiformes - Trout-perches
Cyprinodontiformes - Toothcarps
The Potomac River is found within the Mid-Atlantic region of the United States and flows from the Potomac Highlands into the Chesapeake Bay.
The river (main stem and North Branch) is approximately 405 miles (652 km) long, with a drainage area of about 14,700 square miles (38,000 km2). In terms of area, this makes the Potomac River 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 the Potomac watershed.
