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. Right now, every gauge on the Illinois River is below flood stage. Gauges without a published flood stage show water level and flow only. For nearby rivers, see all Illinois river levels.
| Gauge | Status | Stage | Flood stage | Updated |
|---|---|---|---|---|
| Illinois River at Morris, IL | No flooding | 6.32 ft | 16 ft | |
| Illinois River at Seneca, IL | No flooding | 20.74 ft | 26 ft | |
| Illinois River at Marseilles, IL | No flooding | 12.61 ft | 17 ft | |
| Illinois River at Henry, IL | No flooding | 15.44 ft | 23 ft | |
| Illinois River at Meredosia, IL | No flooding | 4.01 ft | 17 ft | |
| Illinois River at Valley City, IL | No flooding | 3.14 ft | 14 ft | |
| Illinois River at Hardin, IL | No current data | — | 25 ft | — |
| Illinois River at Kingston Mines, IL | No flood stage defined | 5.32 ft | — | |
| Illinois River at Copperas Creek, IL | No flood stage defined | 4.77 ft | — | |
| Illinois River at Florence, IL | No flood stage defined | 15.94 ft | — |
Provisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.