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 2026-10-13); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
67
Moderate
Drought index
161
Moderate
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
20%
of 5 reporting
Median flow
48%
p31 of record
Water assets
2,694
0 springs · 1,234 wells
USGS gauges (7)
- SILVER CREEK NEAR TROY, IL055944500 cfsp0 · much below normal
- KASKASKIA RIVER NEAR VENEDY STATION, IL05594100146 cfsp26 · normal
- KASKASKIA RIVER AT NEW ATHENS, IL05595000410 cfsp31 · normal
- RICHLAND CREEK NEAR HECKER, IL0559520012 cfsp34 · normal
- SILVER CREEK NEAR FREEBURG, IL0559480026 cfsp49 · normal
- SUGAR CREEK NEAR AVISTON, IL055940700 cfsno long-term record
- SILVER CREEK AT ROUTE 161 NR MASCOUTAH, IL0559460016 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-21 | 161 | 0 | 1/5 | p31 |
| 2026-10-20 | 161 | 0 | 0/5 | p41 |
| 2026-10-19 | 161 | 0 | 0/5 | p47 |
| 2026-10-18 | 161 | 0 | 0/5 | p50 |
| 2026-10-17 | 161 | 0 | 0/5 | p76 |
| 2026-10-16 | 161 | 0 | 0/5 | p79 |
| 2026-10-15 | 118 | 0 | 0/5 | p44 |
| 2026-10-14 | 118 | 0 | 1/5 | p33 |
| 2026-10-13 | 118 | 0 | 0/5 | p33 |
| 2026-10-12 | 118 | 0 | 1/5 | p29 |
| 2026-10-11 | 118 | 0 | 0/5 | p30 |
| 2026-10-10 | 118 | 0 | 0/5 | p30 |
| 2026-10-09 | 118 | 0 | 1/5 | p33 |
| 2026-10-08 | 118 | 0 | 1/5 | p36 |
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