Upper Sangamon HUC8 07130006
A 3,732 km² sub-basin of the Upper Mississippi region in IL. Drought coverage is from the US Drought Monitor (map of 2026-09-01); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
77
Healthy
Drought index
0
None
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
0%
of 3 reporting
Median flow
558%
p76 of record
Water assets
3,497
0 springs · 3,329 wells
USGS gauges (3)
- SANGAMON RIVER AT FISHER, IL0557091033 cfsp75 · above normal
- SANGAMON RIVER AT ROUTE 48 AT DECATUR, IL0557354026 cfsp76 · above normal
- SANGAMON RIVER AT MONTICELLO, IL05572000106 cfsp87 · above normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 0 | 0 | 0/3 | p76 |
Top water assets
- 66Lake Decatur Damreservoir
- 65Conway Farm Subdivision Lake Damreservoir
- 65Clear Creekriver
- 65Clear Creekriver
- 65Faries Park Dredge Disposal Damreservoir
- 65Sangamon River At Monticello, Ilriver
- 65Sangamon River At Route 48 At Decatur, Ilriver
- 65Lake Of The Woods Damreservoir
- 65Sangamon River At Fisher, Ilriver
- 65Monroe Street Damreservoir