Big River at Byrnesville
Observed Tue, Sep 22, 4:45 AM CDT
- Flood stage
- 16.00 ft
- Record crest
- 30.20 ft1915
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 28.00 ft |
| Moderate flood | 20.00 ft |
| Minor flood | 16.00 ft |
| Action | 13.00 ft |
- 30.30 ftThe porch of the upstream left bank residence floods at this level.
- 29.60 ftThe main floor at the Byrnesville mill begins to flood.
- 29.40 ftThe floor of the gage shed begins to flood.
- 28.00 ftAt this height, several homes along Burgan Grove Road are flooded.
- 26.00 ftBased on NWC stage-based categorical flood inundation mapping, at this height water will begin flooding the outfields of the 2 easternmost ball fields at the Northwest Jefferson County Sports Complex.
- 22.40 ftAt this level, Twin Rivers Bridge Road must be closed.
- 20.50 ftBurgan Grove Road begins flooding near Cottage Grove Road, cutting off access to Cottage Grove Road. Highway W near Hoene Spring is closed as water crosses the pavement.
- 19.30 ftSouth Byrnesville Road begins flooding near this level.
- 19.10 ftBackyards and one basement along Burgan Grove Road 2 miles west of House Springs begin to flood.
- 19.00 ftDutch Creek Road south of Byrnesville and Byrnesville Road near John McKeever Road north of Byrnesville begin to flood.
- 18.10 ftState Highway BB southeast of Cedar Hill will be closed near this height.
- 18.00 ftCedar Hill Road at Cedar Hill and Klondike Road south of Cedar Hill begin to flood near this height.
- 15.50 ftRockford Beach Park at the Highway MM bridge begins flooding.
Flood outlook
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | 19% |
| Moderate flooding | 10% |
| Major flooding | Under 5% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.
Crest history
72 crests on NOAA’s list since 1915.
| # | Date | Stage |
|---|---|---|
| 1 | August 21, 1915 | 30.20 ft |
| 2 | May 1, 2017 | 30.09 ft |
| 3 | September 25, 1993 | 29.37 ft |
| 4 | November 16, 1993 | 27.61 ft |
| 5 | April 12, 1994 | 27.57 ft |
| 6 | March 20, 2008 | 27.57 ft |
| 7 | November 6, 2024 | 27.57 ft |
| 8 | December 29, 2015 | 27.18 ft |
| 9 | November 21, 1985 | 26.47 ft |
| 10 | May 2, 1983 | 26.42 ft |
| 11 | July 1, 1957 | 26.41 ft |
| 12 | January 5, 1950 | 25.23 ft |
| 13 | December 5, 1982 | 25.18 ft |
| 14 | April 13, 1979 | 25.10 ft |
| 15 | November 1, 2009 | 24.70 ft |
| 16 | March 12, 1935 | 24.65 ft |
| 17 | May 27, 1990 | 24.37 ft |
| 18 | April 7, 2025 | 23.93 ft |
| 19 | April 20, 2013 | 23.58 ft |
| 20 | March 20, 2013 | 23.51 ft |
| 21 | April 29, 2011 | 22.78 ft |
| 22 | May 10, 2009 | 22.69 ft |
| 23 | February 21, 2018 | 22.61 ft |
| 24 | May 10, 2002 | 22.50 ft |
| 25 | May 7, 2000 | 22.44 ft |
Most recent crests
- March 7, 2026: 22.22 ft
- April 21, 2025: 18.62 ft
- April 7, 2025: 23.93 ft
- November 6, 2024: 27.57 ft
- August 5, 2023: 19.70 ft
- March 26, 2023: 21.95 ft
- March 5, 2023: 19.70 ft
- February 19, 2022: 20.39 ft
- April 30, 2021: 16.47 ft
- March 20, 2021: 18.46 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 24 hours into the future from the forecast issuance time. 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.