Sleepy Creek is a 44.0-mile-long (70.8 km) tributary of the Potomac River in the United States, belonging to the Chesapeake Bay's watershed. The stream rises in Frederick County, Virginia, and flows through Morgan County, West Virginia before joining the Potomac near the community of Sleepy Creek. While Sleepy Creek Lake is a part of the Sleepy Creek watershed, it is an impoundment of its tributary, Meadow Branch, in Berkeley County, West Virginia and not of Sleepy Creek itself.