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 2026-10-13); 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 1 reporting
Median flow
220%
p81 of record
Water assets
1,106
0 springs · 674 wells
USGS gauges (2)
- ILLINOIS RIVER AT KINGSTON MINES, IL0556850013,900 cfsp81 · above normal
- MASON TAZEWELL DRAINAGE D AT CR2350E NR TOPEKA, IL0556870559 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-20 | 0 | 0 | 0/1 | p81 |
| 2026-10-19 | 0 | 0 | 0/1 | p68 |
| 2026-10-18 | 0 | 0 | 0/1 | p79 |
| 2026-10-17 | 0 | 0 | 0/1 | p80 |
| 2026-10-16 | 0 | 0 | 0/1 | p76 |
| 2026-10-15 | 0 | 0 | 0/1 | p76 |
| 2026-10-14 | 0 | 0 | 0/1 | p75 |
| 2026-10-13 | 0 | 0 | 0/1 | p78 |
| 2026-10-12 | 0 | 0 | 0/1 | p87 |
| 2026-10-11 | 0 | 0 | 0/1 | p89 |
| 2026-10-10 | 0 | 0 | 0/1 | p89 |
| 2026-10-09 | 0 | 0 | 0/1 | p90 |
| 2026-10-08 | 0 | 0 | 0/1 | p92 |
| 2026-10-07 | 0 | 0 | 0/1 | p92 |
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