Dans Run is a 2.3 miles (3.7 km) non-navigable tributary

Tributary

A tributary or affluent is a stream or river that flows into a main stem river or a lake. A tributary does not flow directly into a sea or ocean...

 stream

Stream

A stream is a body of water with a current, confined within a bed and stream banks. Depending on its locale or certain characteristics, a stream may be referred to as a branch, brook, beck, burn, creek, "crick", gill , kill, lick, rill, river, syke, bayou, rivulet, streamage, wash, run or...

 of the North Branch Potomac River in Mineral County

Mineral County, West Virginia

Mineral County is a county located in the U.S. state of West Virginia. It is part of the Cumberland, MD-WV Metropolitan Statistical Area. As of 2010, the population was 28,212. Its county seat is Keyser.-Ancient history:...

, West Virginia

West Virginia

West Virginia is a state in the Appalachian and Southeastern regions of the United States, bordered by Virginia to the southeast, Kentucky to the southwest, Ohio to the northwest, Pennsylvania to the northeast and Maryland to the east...

. Dans Run rises to the east of Patterson Creek Mountain

Patterson Creek Mountain

Patterson Creek Mountain is a mountain ridge that forms the border between Mineral and Hampshire counties and Grant and Hardy Counties in West Virginia's Eastern Panhandle. The mountain's namesake, Patterson Creek, parallels its western flank...

 and empties into the North Branch at the community of Dans Run

Dans Run, West Virginia

Dans Run is an unincorporated community in Mineral County, West Virginia. It is part of the Cumberland, MD-WV Metropolitan Statistical Area. Dans Run is located along the former Baltimore and Ohio Railroad at the confluence of Dans Run and the North Branch Potomac River....

 on the old Baltimore & Ohio Railroad. Dans Run Island in the North Branch Potomac, at its confluence

Confluence

Confluence, in geography, describes the meeting of two or more bodies of water.Confluence may also refer to:* Confluence , a property of term rewriting systems...

with Dans Run, is also named for the small stream.