Rivers in Missouri
Missouri River at St. Charles
Below flood stage
14.66ftStage
Observed Tue, Sep 22, 4:00 PM CDT
- Flood stage
- 25.00 ft
- Forecast crest
- 14.60 ftTue, Sep 22, 7:00 PM CDT
- Record crest
- 40.11 ft1844
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 36.00 ft |
| Moderate flood | 30.00 ft |
| Minor flood | 25.00 ft |
| Action | 23.00 ft |
- 42.20 ftThis is the approximate minimum level of protection provided by the Monarch levee protecting Chesterfield Valley. Since this gage is affected by Mississippi River backwater, the actual level of overtopping may be higher.
- 38.00 ftFloor of the gage house.
- 37.00 ftResidences north of St. Charles become cut off near this height.
- 36.00 ftMajor flooding begins. The levee at the Highway 370 bridge is overtopped.
- 35.00 ftThe levee at the Highway 370 bridge overtops near this height. Missouri State Route F northwest of Defiance along Femme Osage Creek will be closed near this height.
- 34.50 ftMissouri Highway 94 near Route H will be closed in both directions near this height.
- 33.00 ftUp to 7 non-Federal levees are overtopped. (USACE)
- 32.50 ftThe west end of Greens Bottom Road floods. This road connects Pittman Hill Road and Jungs Station Road south of 94.
- 32.00 ftNear this height, Missouri Bottom Road begins flooding between Prouhet Farm Road and Aubuchon Road.
- 30.70 ftNear this height, the base of the Lewis and Clark Boat House will begin flooding.
- 28.00 ftNear this height, Aubuchon Road and Charbonier Road begin flooding between Teson Road and Riverwood Estates Boulevard.
- 27.00 ftThe Katy Trail begins flooding near this height along Hawning Road, about 2 miles north northeast of the Highway 370 bridge.
- 25.00 ftDownstream near this stage, Missouri Route H at Island Road and agricultural bottomland may begin flooding, depending on Mississippi River flow and backwater.
- 21.00 ftAn access road to farmland on Bonhomme Island gets cut off above this height.
Flood outlook
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | 21% |
| Moderate flooding | 6% |
| Major flooding | Under 5% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued September 23, 2026.
Crest history
101 crests on NOAA’s list since 1844.
| # | Date | Stage |
|---|---|---|
| 1 | June 24, 1844 | 40.11 ft |
| 2 | August 2, 1993 | 40.04 ft |
| 3 | October 7, 1986 | 37.50 ft |
| 4 | July 20, 1951 | 37.30 ft |
| 5 | June 7, 1903 | 36.80 ft |
| 6 | May 22, 1943 | 36.60 ft |
| 7 | April 29, 1944 | 36.50 ft |
| 8 | May 21, 1995 | 36.50 ft |
| 9 | April 26, 1973 | 36.40 ft |
| 10 | May 5, 2017 | 35.91 ft |
| 11 | June 9, 2019 | 35.59 ft |
| 12 | July 1, 1947 | 35.40 ft |
| 13 | April 15, 1994 | 35.40 ft |
| 14 | June 8, 1935 | 35.20 ft |
| 15 | December 31, 2015 | 35.11 ft |
| 16 | June 29, 1942 | 34.80 ft |
| 17 | May 19, 1990 | 34.60 ft |
| 18 | February 26, 1985 | 34.00 ft |
| 19 | December 7, 1982 | 33.90 ft |
| 20 | May 4, 1983 | 33.90 ft |
| 21 | June 3, 2013 | 33.81 ft |
| 22 | June 30, 1967 | 33.60 ft |
| 23 | March 27, 1978 | 33.20 ft |
| 24 | May 12, 1961 | 33.20 ft |
| 25 | April 24, 1927 | 33.00 ft |
Most recent crests
- May 1, 2024: 27.61 ft
- June 4, 2022: 25.27 ft
- May 6, 2022: 26.84 ft
- June 29, 2021: 29.21 ft
- April 13, 2021: 26.42 ft
- March 20, 2021: 29.09 ft
- June 7, 2020: 25.88 ft
- May 31, 2020: 27.95 ft
- March 21, 2020: 27.11 ft
- January 12, 2020: 28.03 ft
Nearby
Upstream, downstream and the gauges around this one.
What this means
Forecasts by the Missouri Basin River Forecast Center. Forecasts are issued routinely year-round. 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.