Sangamon River River Levels

Last Updated: March 27, 2026

The Sangamon River is a 246-mile-long tributary of the Illinois River.


Summary

Total streamflow across the Sangamon River was last observed at 4,450 cfs, and is expected to yield approximately 8,826 acre-ft of water today; about 38% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 11,621 cfs, with recent peaks last observed on 2016-01-01 when daily discharge volume was observed at 192,837 cfs.

Maximum discharge along the river is currently at the Sangamon River Near Oakford reporting a streamflow rate of 1,690 cfs. However, the streamgauge with the highest stage along the river is the Sangamon River At Petersburg with a gauge stage of 5.95 ft. This river is monitored from 6 different streamgauging stations along the Sangamon River, the highest being situated at an altitude of 693 ft, the Sangamon River At Fisher.




15-Day Weather Outlook


River Details

Last Updated 2026-03-27
Discharge Volume 8,826 ACRE-FT
Streamflow 4,449.8 cfs
+634.1 cfs (+16.62%)
Percent of Normal 38.29%
Maximum 192,837.0 cfs
2016-01-01
Seasonal Avg 11,621 cfs
       
River Streamflow Levels
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Sangamon River At Fisher
USGS 05570910
15 cfs 4.65 ft 50
Sangamon River At Monticello
USGS 05572000
58 cfs 4.99 ft 179.23
Sangamon River At Rt 48 At Decatur
USGS 05573540
743 cfs 5.66 ft 213.5
Sangamon River At Riverton
USGS 05576500
834 cfs 4.97 ft 4.51
Sangamon River At Petersburg
USGS 05578000
1110 cfs 5.95 ft 1.83
Sangamon River Near Oakford
USGS 05583000
1690 cfs 4.91 ft 1.81
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile

The Sangamon River is a principal tributary of the Illinois River, approximately 246 miles (396 km) long, in central Illinois in the United States. It drains a mostly rural agricultural area between Peoria and Springfield. The river is associated with the early career of Abraham Lincoln and played an important role in the early white 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.