Lower Illinois-Senachwine Lake HUC8 07130001
A 5,076 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
70
Moderate
Drought index
0
None
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
50%
of 4 reporting
Median flow
92%
p28 of record
Water assets
3,682
0 springs · 3,317 wells
USGS gauges (5)
- ILLINOIS RIVER AT HENRY, IL055583002,970 cfsp9 · much below normal
- FONDULAC CREEK NEAR EAST PEORIA, IL055615000 cfsp10 · below normal
- FARM CREEK AT FARMDALE, IL055605002 cfsp46 · normal
- BIG BUREAU CREEK AT PRINCETON, IL055565008 cfsp52 · normal
- EAST BUREAU CREEK NEAR BUREAU, IL055575002 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 0 | 0 | 2/4 | p28 |
Top water assets
- 66Tiskilwa Structure 5 Damreservoir
- 66Lake Thunderbird Damreservoir
- 66Wildwood Lake Damreservoir
- 66Putnam County Conservation District Damreservoir
- 66Hennepin Ash Pond 2 Damreservoir
- 66Tiskilwa Strucure 2 Damreservoir
- 66Condit Dam 1reservoir
- 66White Oak Lake Damreservoir
- 66Tiskilwa Structure 4 Damreservoir
- 66Fondulac Damreservoir