Rivers in Illinois
Illinois River at Peoria Lock and Dam
Below flood stage
438.98ftStage
Observed Sun, Sep 27, 10:00 PM CDT
- Flood stage
- 447.00 ft
- Forecast crest
- 438.90 ftMon, Sep 28, 7:00 AM CDT
- Record crest
- 456.57 ft2013
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 455.00 ft |
| Moderate flood | 449.00 ft |
| Minor flood | 447.00 ft |
| Action | 444.00 ft |
Flood outlook
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | 26% |
| Moderate flooding | 15% |
| Major flooding | Under 5% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued September 25, 2026.
Crest history
38 crests on NOAA’s list since 1943.
| # | Date | Stage |
|---|---|---|
| 1 | April 23, 2013 | 456.57 ft |
| 2 | May 24, 1943 | 455.90 ft |
| 3 | March 23, 1979 | 455.80 ft |
| 4 | March 8, 1985 | 455.60 ft |
| 5 | May 7, 2019 | 455.06 ft |
| 6 | May 22, 2020 | 454.89 ft |
| 7 | December 9, 1982 | 454.60 ft |
| 8 | June 30, 2015 | 454.55 ft |
| 9 | September 19, 2008 | 454.30 ft |
| 10 | March 3, 1997 | 454.20 ft |
| 11 | June 2, 2019 | 454.16 ft |
| 12 | January 3, 2016 | 454.13 ft |
| 13 | February 28, 2018 | 452.02 ft |
| 14 | May 5, 2017 | 450.66 ft |
| 15 | February 2, 2024 | 448.99 ft |
| 16 | June 25, 2026 | 448.16 ft |
| 17 | June 24, 2019 | 447.54 ft |
| 18 | October 3, 2019 | 447.28 ft |
| 19 | November 4, 2019 | 447.19 ft |
| 20 | July 4, 2021 | 447.15 ft |
| 21 | November 2, 2021 | 446.59 ft |
| 22 | July 7, 2026 | 446.58 ft |
| 23 | May 5, 2024 | 446.55 ft |
| 24 | February 27, 2019 | 446.48 ft |
| 25 | April 9, 2022 | 446.45 ft |
Most recent crests
- August 20, 2026: 444.96 ft
- July 7, 2026: 446.58 ft
- June 25, 2026: 448.16 ft
- April 23, 2026: 445.29 ft
- April 10, 2026: 445.08 ft
- May 5, 2024: 446.55 ft
- April 10, 2024: 446.08 ft
- February 2, 2024: 448.99 ft
- April 7, 2023: 444.48 ft
- March 10, 2023: 444.80 ft
Nearby
Upstream, downstream and the gauges around this one.
What this means
Forecasts by the North Central River Forecast Center. Forecasts are issued routinely year-round. River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time.
Sources
Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service.