Rock River at Byron
Observed Sun, Sep 20, 5:15 PM CDT
- Flood stage
- 13.00 ft
- Forecast crest
- 11.70 ftMon, Sep 21, 7:00 PM CDT
- Record crest
- 17.80 ft1973
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 16.00 ft |
| Moderate flood | 14.00 ft |
| Minor flood | 13.00 ft |
| Action | 10.50 ft |
- 17.00 ftWater threatens structures at the water treatment plant in Byron.
- 16.50 ftNumerous residences are threatened between IL-2 and the river just northeast of Byron. River Road is threatened near the river just south of Byron.
- 16.00 ftThe MercyHealth Clinic is threatened along Kysor Drive in Byron.
- 15.50 ftWater threatens lower sections of the water treatment plant property in Byron. Water threatens IL-2 west of Byron.
- 13.50 ftNumerous low-lying structures downstream of Byron are flooded.
- 13.00 ftLow-lying structures downstream of Byron are threatened.
- 12.00 ftWater inundates yards of several houses along River Road near Byron. Low-lying portions of Hamas Park and Sunshine Park are inundated.
- 10.50 ftWater begins to affect low-lying areas along the river near Byron.
Flood outlook
Significant river flooding is possible here through September 25.
Weather conditions indicate that significant flooding could occur; it is neither certain nor imminent.
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | 6% |
| Moderate flooding | Under 5% |
| Major flooding | Under 5% |
The five-day outlook is from the Weather Prediction Center with the River Forecast Centers. The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.
Crest history
41 crests on NOAA’s list since 1959.
| # | Date | Stage |
|---|---|---|
| 1 | April 20, 1973 | 17.80 ft |
| 2 | April 20, 2013 | 17.08 ft |
| 3 | March 16, 2019 | 16.64 ft |
| 4 | July 25, 2010 | 16.50 ft |
| 5 | June 14, 2000 | 16.12 ft |
| 6 | October 8, 2018 | 15.67 ft |
| 7 | August 25, 2007 | 15.52 ft |
| 8 | July 22, 2017 | 15.38 ft |
| 9 | February 22, 2018 | 15.15 ft |
| 10 | March 25, 1975 | 15.00 ft |
| 11 | June 15, 2008 | 14.81 ft |
| 12 | March 21, 1979 | 14.70 ft |
| 13 | April 5, 1959 | 14.70 ft |
| 14 | June 5, 2002 | 14.67 ft |
| 15 | October 4, 2019 | 14.42 ft |
| 16 | September 5, 2018 | 14.28 ft |
| 17 | July 16, 2024 | 13.84 ft |
| 18 | March 11, 2009 | 13.66 ft |
| 19 | September 15, 2019 | 13.53 ft |
| 20 | June 13, 2004 | 13.19 ft |
| 21 | May 18, 2020 | 13.11 ft |
| 22 | March 29, 2020 | 13.06 ft |
| 23 | May 31, 2019 | 13.00 ft |
| 24 | June 21, 2018 | 12.86 ft |
| 25 | June 27, 2018 | 12.82 ft |
Most recent crests
- July 16, 2024: 13.84 ft
- June 24, 2024: 11.23 ft
- April 4, 2024: 12.47 ft
- January 28, 2024: 10.61 ft
- April 5, 2023: 11.67 ft
- December 28, 2022: 10.32 ft
- May 18, 2020: 13.11 ft
- March 29, 2020: 13.06 ft
- October 4, 2019: 14.42 ft
- September 15, 2019: 13.53 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 and future precipitation. The stages/flows that will occur may be different if future rainfall is different than forecast.
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.