Is the Illinois River flooding?
The Illinois River is tracked by 10 USGS streamgauges in Illinois. This page compares each gauge’s live water level against its official National Weather Service flood stage, refreshed every 15 minutes, so you can tell whether the Illinois River is running normal, rising toward flood stage, or already flooding. 4 of 10 gauges have both a usable water-level reading and a published minor flood stage. Gauges without a published flood stage show water level and flow only. For nearby rivers, see all Illinois river levels.
River facts
The longest-running gauge on this river is Illinois River at Marseilles, IL. The highest level ever recorded there was 35.40 ft on 21 January 1916, carrying 40,000 cfs. Peak records there go back to 1892 (129 annual peaks). It is currently at 13.84 ft, 21.6 ft below that record.
| Gauge | Status | Stage | Flood stage | Updated |
|---|---|---|---|---|
| Illinois River at Morris, IL | No flooding | 7.35 ft | 16 ft | |
| Illinois River at Seneca, IL | No flooding | 21.18 ft | — | |
| Illinois River at Marseilles, IL | No flooding | 13.84 ft | — | |
| Illinois River at Henry, IL | No flooding | 17.84 ft | 23 ft | |
| Illinois River at Meredosia, IL | No flooding | 6.35 ft | 17 ft | |
| Illinois River at Valley City, IL | No flooding | 5.00 ft | 14 ft | |
| Illinois River at Hardin, IL | No current data | — | 25 ft | — |
| Illinois River at Kingston Mines, IL | No flood stage defined | 10.06 ft | — | |
| Illinois River at Copperas Creek, IL | No flood stage defined | 9.11 ft | — | |
| Illinois River at Florence, IL | No flood stage defined | 17.58 ft | — |