Lower Illinois-Lake Chautauqua HUC8 07130003
A 4,203 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
81
Healthy
Drought index
0
None
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
0%
of 1 reporting
Median flow
120%
p61 of record
Water assets
1,106
0 springs · 674 wells
USGS gauges (2)
- ILLINOIS RIVER AT KINGSTON MINES, IL055685007,850 cfsp61 · normal
- MASON TAZEWELL DRAINAGE D AT CR2350E NR TOPEKA, IL0556870561 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 0 | 0 | 0/1 | p61 |
Top water assets
- 67Duck Creek Station Damsreservoir
- 66Coal And Crane Ws Str 14reservoir
- 66Deep Lake Damreservoir
- 66Charter Oak North Lake Damreservoir
- 66Hollis Park Damreservoir
- 66Duck Creek Recycle Pond Damreservoir
- 66Hidden Point Damreservoir
- 66Threw Lake Damreservoir
- 66Duck Creek Gypsum Stack Damreservoir
- 66Lake Camelot Damreservoir