The Pigg River is a river

River

A river is a natural watercourse, usually freshwater, flowing towards an ocean, a lake, a sea, or another river. In a few cases, a river simply flows into the ground or dries up completely before reaching another body of water. Small rivers may also be called by several other names, including...

 in south-central Virginia

Virginia

The Commonwealth of Virginia , is a U.S. state on the Atlantic Coast of the Southern United States. Virginia is nicknamed the "Old Dominion" and sometimes the "Mother of Presidents" after the eight U.S. presidents born there...

 in the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. It is a 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...

 of the Roanoke River

Roanoke River

The Roanoke River is a river in southern Virginia and northeastern North Carolina in the United States, 410 mi long. A major river of the southeastern United States, it drains a largely rural area of the coastal plain from the eastern edge of the Appalachian Mountains southeast across the Piedmont...

, which flows to the Atlantic Ocean

Atlantic Ocean

The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...

 via Albemarle Sound

Albemarle Sound

Albemarle Sound is a large estuary on the coast of North Carolina in the United States located at the confluence of a group of rivers, including the Chowan and Roanoke. It is separated from the Atlantic Ocean by the Outer Banks, a long barrier peninsula upon which the town of Kitty Hawk is located,...

.

The Pigg River rises on Fivemile Mountain in western Franklin County

Franklin County, Virginia

As of the census of 2000, there were 47,286 people, 18,963 households, and 13,918 families residing in the county. The population density was 68 people per square mile . There were 22,717 housing units at an average density of 33 per square mile...

 and flows generally eastwardly through Franklin and Pittsylvania

Pittsylvania County, Virginia

As of the census of 2000, there were 61,745 people, 24,684 households, and 18,216 families residing in the county. The population density was 64 people per square mile . There were 28,011 housing units at an average density of 29 per square mile...

 Counties, past the town of Rocky Mount

Rocky Mount, Virginia

Rocky Mount is the county seat of Franklin County, Virginia, United States. The town is part of the Roanoke Metropolitan Statistical Area, and had a population of 4,066 at the 2000 census. It is located in the Roanoke Region of Virginia-History:...

. It joins the Roanoke River from the south (along a section of the Roanoke often known locally as the Staunton River) as part of the Leesville Reservoir, which is formed by a dam

Dam

A dam is a barrier that impounds water or underground streams. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees are used to manage or prevent water flow into specific land regions. Hydropower and pumped-storage hydroelectricity are...

on the Roanoke.