Split Rock Creek at Corson
Observed Wed, Sep 23, 10:45 AM CDT
- Flood stage
- 8.50 ft
- Record crest
- 19.01 ft2019
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 16.00 ft |
| Moderate flood | 11.00 ft |
| Minor flood | 8.50 ft |
| Action | 7.50 ft |
- 20.00 ft260th St begins to flood west of the bridge.
- 19.00 ftWater reaches the bottom of the bridge on McHardy Rd.
- 17.00 ftAspen Blvd near McHardy Rd may be flooded and water will be approaching a couple homes and outbuildings near Rushmore Dr. The bridge on 264th St is overtopped.
- 16.00 ftMcHardy Rd in Brandon may begin to flood.
- 14.50 ftIf not already flooded, Highway 11 south of Madison St begins to flood, as does 264th St.
- 12.50 ftThe athletic fields at Pioneer Park begin to flood as does much of the lower lying areas of the surrounding golf courses.
- 11.00 ftThe nursery near the mouth of Split Rock Creek begins flooding if the Big Sioux River is high enough to cause a backwater effect. Highway 11 between Highway 42 and Madison St can be flooded if Beaver Creek flows are also high.
- 9.00 ftThe parking lot at the racetrack may be flooded and the lower portions of McHardy Park begins to flood.
- 8.50 ftFlooding of the lower lying agricultural land begins.
- 5.50 ftPortions of the short walking trail in McHardy Park begins to flood.
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 September 23, 2026.
Crest history
58 crests on NOAA’s list since 1966.
| # | Date | Stage |
|---|---|---|
| 1 | September 12, 2019 | 19.01 ft |
| 2 | May 8, 1993 | 17.58 ft |
| 3 | June 22, 2024 | 16.18 ft |
| 4 | June 17, 2014 | 16.16 ft |
| 5 | September 24, 2010 | 15.50 ft |
| 6 | April 8, 1969 | 15.00 ft |
| 7 | June 21, 1984 | 14.08 ft |
| 8 | September 22, 1986 | 13.98 ft |
| 9 | April 7, 2006 | 12.82 ft |
| 10 | April 1, 1997 | 12.80 ft |
| 11 | June 21, 2018 | 12.80 ft |
| 12 | March 22, 1979 | 12.65 ft |
| 13 | April 24, 2001 | 11.95 ft |
| 14 | March 14, 2019 | 11.66 ft |
| 15 | April 19, 1995 | 11.65 ft |
| 16 | July 15, 2011 | 11.59 ft |
| 17 | July 1, 1992 | 10.69 ft |
| 18 | May 7, 2012 | 10.48 ft |
| 19 | June 13, 1994 | 10.48 ft |
| 20 | July 6, 2022 | 9.99 ft |
| 21 | March 7, 1983 | 9.96 ft |
| 22 | April 10, 2023 | 9.91 ft |
| 23 | March 13, 2007 | 9.87 ft |
| 24 | October 10, 1973 | 9.75 ft |
| 25 | April 22, 1985 | 9.72 ft |
Most recent crests
- June 30, 2025: 3.06 ft
- June 22, 2024: 16.18 ft
- April 10, 2023: 9.91 ft
- July 6, 2022: 9.99 ft
- March 24, 2021: 3.07 ft
- March 29, 2020: 5.08 ft
- September 12, 2019: 19.01 ft
- March 14, 2019: 11.66 ft
- June 21, 2018: 12.80 ft
- May 21, 2017: 5.31 ft
Nearby
Upstream, downstream and the gauges around this one.
What this means
Forecasts by the Missouri Basin 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. 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. Gauge reading may be affected by ice.
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.