Sangamon River

Sangamon River
The Sangamon River near Decatur.
Location
Country	United States
Physical characteristics
Source
• location	Southern McLean County, Illinois
• coordinates	40°26′43.12″N 88°43′57.24″W / 40.4453111°N 88.7325667°W / 40.4453111; -88.7325667
Mouth
• location	Illinois River at Beardstown, Illinois
• coordinates	40°1′21.17″N 90°25′58.45″W / 40.0225472°N 90.4329028°W / 40.0225472; -90.4329028
Length	246 mi (396 km)
Discharge
• location	Oakford, Illinois
• average	3,639 cu/ft. per sec.[1]
Basin features
Progression	Illinois River — Mississippi River
River system	Mississippi River
Tributaries
• right	Salt Creek
GNIS ID	421688

The Sangamon River is a principal tributary of the Illinois River, approximately 246 miles (396 km) long,^[2] in central Illinois in the United States. It drains a mostly rural agricultural area and runs through Decatur and Springfield. The river is associated with the early career of Abraham Lincoln and played an important role in early European settlement of Illinois, when the area around was known as the "Sangamon River Country". The section of the Sangamon River that flows through Robert Allerton Park near Monticello was named a National Natural Landmark in 1971.