River stage
Meredosia, Illinois River
- River level
- 8.36 ft
- Status
- Below flood stage
- 7-day change
- -1.31 ft
- Recent high
- 20.34 ft
- Recent low
- 2.97 ft
Last reported 2026-10-13 | NWS MROI2
- 30-day change
- +4.98 ft
- Average
- 10.43 ft
- Readings
- 122
- Data span
- 122 days
- Record crest
- 28.86 ft
In brief
The Illinois River at Meredosia, IL read 8.36 ft on Oct 13, 2026, 5.64 ft below action stage. That is 4.98 ft higher than 30 days earlier.
Source: National Weather Service gauge MROI2
At this level: At and below this height, barge traffic will need to consider lowering tonnage to avoid grounding.
River level timeline
Stage threshold profile
Highest crests on record
| Rank | Crest | Date |
|---|---|---|
| 1 | 28.86 ft | 2015-07-02 |
| 2 | 28.70 ft | 1943-05-26 |
| 3 | 28.69 ft | 2013-04-27 |
| 4 | 28.39 ft | 2019-06-04 |
| 5 | 28.30 ft | 1995-05-30 |
| 6 | 28.03 ft | 2016-01-05 |
| 7 | 27.62 ft | 1985-03-10 |
| 8 | 27.57 ft | 2002-05-19 |
Flood crests recorded at this gauge by the National Weather Service.
What happens at each level
- 1.00 ft
At and below this height, barge traffic will need to consider lowering tonnage to avoid grounding.
- 13.00 ft
Sunset Beach Road begins flooding about two miles north of Meredosia near this level.
- 17.39 ft
Meredosia boat dock floods.
- 18.00 ft
City of Meredosia plugs storm sewer outlets.
- 20.00 ft
Beach Road just north of Shady Acres floods near this height.
- 21.00 ft
Chambers Road south of Naples floods at Mauvaise Terre Creek near this level.
- 22.00 ft
Cargill Company in Florence begins flood fighting activities. Also, unloading operations are shut down at the Ameren power plant.
- 22.20 ft
Low roads in Florence overtopped.
- 22.40 ft
Meredosia Lake Road overtopped.
- 23.00 ft
Flood fighting activities begin at Big Swan Lake and Dam.
Written by the local National Weather Service forecast office for this exact gauge.
Frequently asked questions
Is the Illinois River flooding at Meredosia?
No. The Illinois River at Meredosia is at 8.36 ft, 5.64 ft below action stage.
What is the flood stage at Meredosia?
The National Weather Service sets action stage 14 ft, minor flooding 17 ft, moderate flooding 22 ft and major flooding 24 ft.
What is the highest the Illinois River has been at Meredosia?
The highest crest on record is 28.86 ft, on 2015-07-02.
Is the Illinois River high or low right now at Meredosia?
At 8.36 ft it is higher than 40% of readings over the last 122 days.
Stage and flood information from the NOAA National Weather Service (gauge MROI2); daily history from the U.S. Geological Survey (site 05585500). Last reading 2026-10-13. For flood safety decisions always follow official National Weather Service warnings.