Lower Kaskaskia HUC8 07140204
A 4,161 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
20%
of 5 reporting
Median flow
49%
p29 of record
Water assets
2,694
0 springs · 1,234 wells
USGS gauges (6)
- KASKASKIA RIVER AT NEW ATHENS, IL05595000441 cfsp14 · below normal
- KASKASKIA RIVER NEAR VENEDY STATION, IL05594100262 cfsp29 · normal
- SILVER CREEK NEAR TROY, IL055944501 cfsp29 · normal
- RICHLAND CREEK NEAR HECKER, IL0559520011 cfsp36 · normal
- SILVER CREEK NEAR FREEBURG, IL0559480016 cfsp41 · normal
- SUGAR CREEK NEAR AVISTON, IL055940702 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 0 | 0 | 1/5 | p29 |
Top water assets
- 66Castle Ridge Lake Damreservoir
- 66Baldwin Plant Cooling Lake Dikesreservoir
- 66Willow Wood Lake Damreservoir
- 66Marissa Recreation Association South Lake Damreservoir
- 66Coulterville Coal/Gateway Mine/Slurry Cell 3 Damreservoir
- 66Baldwin Plant Cooling Lake Damreservoir
- 66St. Clair County Retention Pond 1 Damreservoir
- 66Exxonmobil Coal Usa/Mine 2/Refuse Disposal Area 2reservoir
- 66Shale Lake Damreservoir
- 66Stonehenge Lake Damreservoir