Flat River Tributary to Neuse River
Location of Flat River mouth
Location
Country	United States
State	North Carolina
Counties	Person Durham
Physical characteristics
Source	confluence of North and South Flat Rivers
• location	about 10 miles north-northwest of Bahama, North Carolina[2]
• coordinates	36°15′04″N 078°55′48″W / 36.25111°N 78.93000°W / 36.25111; -78.93000[1]
• elevation	1,540 ft (470 m)[3]
Mouth	Eno River at Falls Lake
• location	Durham, North Carolina
• coordinates	36°05′42″N 078°48′48″W / 36.09500°N 78.81333°W / 36.09500; -78.81333[1]
• elevation	252 ft (77 m)[3]
Length	19.23 mi (30.95 km)[4]
Basin size	175.06 square miles (453.4 km2)
Discharge
• location	Falls Lake
• average	184.31 cu ft/s (5.219 m3/s) at mouth with Eno River at Falls Lake[5]
Basin features
Progression	Eno River → Neuse River → Pamlico Sound → Atlantic Ocean
River system	Neuse River
Tributaries
• left	Deep Creek Dry Creek Rocky Creek
Waterbodies	Lake Michie

The Flat River is a river in southern Person County, North Carolina and a portion of Durham County, North Carolina.^[6]

The river flows from Person County to combine with the Eno river to flow into the Neuse River. 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 maintains a research forest within its watershed. Lake Michie, the principal reservoir for the city of Durham, is located on the lower reaches of the Flat River.