Green Spring Run is an 8.9 miles (14.3 km) 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 Hampshire County

Hampshire County, West Virginia

Hampshire County is a county located in the U.S. state of West Virginia. As of 2010, the population was 23,964. Its county seat is Romney, West Virginia's oldest town . Hampshire County was created by the Virginia General Assembly on December 13, 1753, from parts of Frederick and Augusta counties ...

 in the U.S. state

U.S. state

A U.S. state is any one of the 50 federated states of the United States of America that share sovereignty with the federal government. Because of this shared sovereignty, an American is a citizen both of the federal entity and of his or her state of domicile. Four states use the official title of...

 of 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...

. Green Spring Run rises in Greenwood Hollow north of Springfield

Springfield, West Virginia

Springfield is an unincorporated census-designated place in northwestern Hampshire County in the U.S. state of West Virginia. As of the 2010 census, Springfield had a population of 477. Springfield is located north of Romney along West Virginia Route 28 at its junction with Green Spring Road and...

 and meanders northeast through Green Spring Valley. The South Branch Valley Railroad

South Branch Valley Railroad

The South Branch Valley Railroad consists of a 52.4 mile length of railroad in the U.S. state of West Virginia extending north along the South Branch Potomac River from Petersburg to the CSXT mainline at Green Spring adjacent to the Potomac River...

 and Green Spring Road (West Virginia Secondary Route 1) run parallel to the stream. It runs through the community of Green Spring

Green Spring, West Virginia

Green Spring is an unincorporated census-designated place and railroad town in Hampshire County, West Virginia, USA. As of the 2010 census, its population was 218. Green Spring is located north of Springfield on Green Spring Road near the confluence of the North and South Branches of the Potomac...

, from which the stream takes its name. From Green Spring, Green Spring Run flows east where it reaches 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 the North Branch Potomac shortly before the North Branch joins with the South Branch Potomac River to form the Potomac River

Potomac River

The Potomac River flows into the Chesapeake Bay, located along the mid-Atlantic coast of the United States. The river is approximately long, with a drainage area of about 14,700 square miles...

.

According to the Geographic Names Information System

Geographic Names Information System

The Geographic Names Information System is a database that contains name and locative information about more than two million physical and cultural features located throughout the United States of America and its territories. It is a type of gazetteer...

, Green Spring Run has also been known as Greenspring Creek.