Kaskaskia River at Vandalia
Observed Wed, Sep 23, 4:00 AM CDT
- Flood stage
- 18.00 ft
- Record crest
- 28.27 ft2002
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 26.00 ft |
| Moderate flood | 24.00 ft |
| Minor flood | 18.00 ft |
| Action | 16.00 ft |
- 33.29 ftFlood waters reach the instrument shelf of the manometer gage house.
- 31.00 ftFloodwaters will threaten the wastewater treatment facility near this height.
- 30.50 ftFlood waters reach the floor of the gage house.
- 27.90 ftU.S. Highway 51 south of Vandalia begins to flood near this height.
- 27.50 ftNear this level, the left bank levee just south of the U.S. Highway 51 bridge is overtopped.
- 27.20 ftAt this height, Thrill Hill Road (County Road 1800) is flooded from U.S. 51 for about 3000 ft westward.
- 27.10 ftAt this height about 75% of County Road 2000 between US 51 and the bridge over the Kaskaskia River is flooded.
- 26.00 ftThe Dively and Vandalia Levees begin to be overtopped.
- 25.80 ftAlong South 4th Street, numerous homes begin flooding near the St. Clair Street intersection.
- 25.50 ftSouth 4th Street begins flooding near and south of Jefferson Street in Vandalia.
- 23.00 ftAgricultural levee begins to be slightly overtopped. No residences are affected at this level.
- 19.20 ftState Highway J just east of County Road 206 begins to flood near this height.
- 18.00 ftFlood Stage. Minor flooding begins. Unprotected farmland begins to flood.
Flood outlook
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | 25% |
| Moderate flooding | 7% |
| Major flooding | Under 5% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.
Crest history
147 crests on NOAA’s list since 1908.
| # | Date | Stage |
|---|---|---|
| 1 | May 8, 2002 | 28.27 ft |
| 2 | April 19, 2013 | 27.88 ft |
| 3 | January 12, 2020 | 27.84 ft |
| 4 | December 28, 2015 | 27.83 ft |
| 5 | January 6, 2005 | 27.70 ft |
| 6 | May 1, 2017 | 27.65 ft |
| 7 | April 28, 2011 | 27.45 ft |
| 8 | April 30, 1996 | 27.41 ft |
| 9 | May 18, 1995 | 27.40 ft |
| 10 | June 29, 1951 | 27.39 ft |
| 11 | April 6, 2025 | 27.22 ft |
| 12 | January 4, 1950 | 27.10 ft |
| 13 | February 24, 1985 | 26.95 ft |
| 14 | December 12, 1985 | 26.71 ft |
| 15 | April 13, 1994 | 26.57 ft |
| 16 | May 18, 1990 | 26.45 ft |
| 17 | February 8, 1999 | 26.41 ft |
| 18 | March 4, 1979 | 26.39 ft |
| 19 | April 1, 2022 | 26.21 ft |
| 20 | March 20, 2008 | 26.17 ft |
| 21 | April 24, 1944 | 26.05 ft |
| 22 | April 23, 1984 | 25.98 ft |
| 23 | December 26, 2009 | 25.91 ft |
| 24 | December 23, 1967 | 25.90 ft |
| 25 | February 13, 2009 | 25.88 ft |
Most recent crests
- April 6, 2025: 27.22 ft
- April 3, 2024: 18.24 ft
- January 25, 2024: 18.15 ft
- May 16, 2023: 18.26 ft
- March 26, 2023: 23.93 ft
- March 6, 2023: 18.99 ft
- August 7, 2022: 20.70 ft
- April 1, 2022: 26.21 ft
- March 9, 2022: 22.87 ft
- February 19, 2022: 23.70 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.