The Flat River is a river in southern Person County, North Carolina

Person County, North Carolina

Person County is a county located in the Piedmont region in north-central North Carolina in the United States. It is part of the Durham-Chapel Hill Metropolitan Area. The population was 39,464 at the 2010 census.The county seat is Roxboro...

 and a portion of Durham County, North Carolina

Durham County, North Carolina

-Demographics:As of the census of 2000, there were 223,314 people, 89,015 households, and 54,032 families residing in the county. The population density was 769 people per square mile . There were 95,452 housing units at an average density of 329 per square mile...

.

The river flows from Person County to combine with the Little

Little River (North Carolina)

Little River may refer to ten streams by that name in the U.S. state of North Carolina:*Little River : A tributary of Albemarle Sound forming a portion of the border between Pasquotank and Perquimans counties....

 and Eno

Eno River

The Eno River, named for the Eno Indians who once lived along its banks, is the initial tributary of the Neuse River in North Carolina, USA.The Eno rises in Orange County. The river's watershed occupies most of Orange and Durham counties...

 rivers to flow into the Neuse River

Neuse River

The Neuse River is a river rising in the Piedmont of North Carolina and emptying into Pamlico Sound below New Bern. Its total length is approximately , making it the longest river entirely contained in North Carolina. The Trent River joins it at New Bern. Its drainage basin, measuring in area,...

. The river is the namesake for the township called Flat River, which has the highest census total of the 9 communities in Person County because it is mostly a combination of Hurdle Mills and Timberlake through which the river passes. North Carolina State University

North Carolina State University

North Carolina State University at Raleigh is a public, coeducational, extensive research university located in Raleigh, North Carolina, United States. Commonly known as NC State, the university is part of the University of North Carolina system and is a land, sea, and space grant institution...

 maintains a research forest within its watershed. Lake Michie

Lake Michie

Lake Michie is a reservoir in central North Carolina, within the Neuse River watershed. The lake is located in northern Durham County near the town of Bahama. Fed principally by the Flat River, Lake Michie is the primary reservoir for the city of Durham...

, the principal reservoir for the city of Durham

Durham, North Carolina

Durham is a city in the U.S. state of North Carolina. It is the county seat of Durham County and also extends into Wake County. It is the fifth-largest city in the state, and the 85th-largest in the United States by population, with 228,330 residents as of the 2010 United States census...

, is located on the lower reaches of the Flat River.