Are there any large bodies of water close to Washington DC?

- About 200 miles from Washington, D.C.

- Largest estuary in the United States

Atlantic Ocean:

- About 100 miles from Washington, D.C.

- Contains the coastline of Maryland, Virginia, and Delaware

Potomac River:

- Flows through Washington, D.C.

- Meets Chesapeake Bay at the southern end of Maryland