Rivers in Illinois
Rock River at Como
Below flood stage
8.06ftStage
Observed Wed, Sep 23, 5:00 AM CDT
- Flood stage
- 12.50 ft
- Record crest
- 15.64 ft2017
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 18.00 ft |
| Moderate flood | 15.50 ft |
| Minor flood | 12.50 ft |
| Action | 10.00 ft |
- 15.60 ftBlue Goose Road near Anderson Road east of Lyndon is overtopped and south of Como, water is encroaching onto Prophetstown Road west of Luther Road.
- 12.80 ftWater begins to encroach into properties on Regan Road northeast of Como.
- 12.30 ftWater begins to encroach on the parking areas at Lawrence Park boat launch in Sterling and the Moline Road rest area boat launch southwest of Como.
- 10.00 ftWater begins to encroach on the parking area at Prophetstown State Park.
Flood outlook
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | Under 5% |
| Moderate flooding | Under 5% |
| Major flooding | Under 5% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.
Crest history
7 crests on NOAA’s list since 2015.
| # | Date | Stage |
|---|---|---|
| 1 | July 23, 2017 | 15.64 ft |
| 2 | March 16, 2019 | 15.18 ft |
| 3 | February 21, 2018 | 14.68 ft |
| 4 | October 5, 2019 | 13.30 ft |
| 5 | July 16, 2024 | 12.97 ft |
| 6 | June 16, 2015 | 11.64 ft |
| 7 | December 15, 2015 | 9.86 ft |
Most recent crests
- July 16, 2024: 12.97 ft
- October 5, 2019: 13.30 ft
- March 16, 2019: 15.18 ft
- February 21, 2018: 14.68 ft
- July 23, 2017: 15.64 ft
- December 15, 2015: 9.86 ft
- June 16, 2015: 11.64 ft
Nearby
Upstream, downstream and the gauges around this one.
What this means
Forecasts by the North Central River Forecast Center. Forecasts are issued as needed during times of high water, but are not routinely available. River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 48 hours into the future from the forecast issuance time.
Sources
Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.