« Back to New Saint Marcus Cemetery Rivers
Missouri River at St. Charles
Critical Stages
23' - Action
25' - Flood
30' - Moderate
36' - Major
Latest Observation
Updated: 7:00 AM CST 12/6/25
Status: No Flooding
Stage: 8.13 ft
Flow: 38.6 kcfs
Forecast
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 12 PM 12/6 | 8 | 37.8 |
| 6 PM 12/6 | 8 | 37.8 |
| 12 AM 12/7 | 7.9 | 37.4 |
| 6 AM 12/7 | 7.7 | 36.6 |
| 12 PM 12/7 | 7.6 | 36.1 |
| 6 PM 12/7 | 7.5 | 35.7 |
| 12 AM 12/8 | 7.3 | 34.8 |
| 6 AM 12/8 | 7.2 | 34.4 |
| 12 PM 12/8 | 7.1 | 34 |
| 6 PM 12/8 | 7 | 33.5 |
| 12 AM 12/9 | 6.9 | 33.2 |
| 6 AM 12/9 | 6.8 | 32.8 |
| 12 PM 12/9 | 6.7 | 32.5 |
| 6 PM 12/9 | 6.7 | 32.5 |
| 12 AM 12/10 | 6.7 | 32.5 |
| 6 AM 12/10 | 6.6 | 32.2 |
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 7:30 AM 12/6 | 8.08 | 38.3 |
| 7:00 AM 12/6 | 8.13 | 38.6 |
| 6:30 AM 12/6 | 8.12 | 38.5 |
| 6:00 AM 12/6 | 8.11 | 38.5 |
| 5:30 AM 12/6 | 8.13 | 38.6 |
| 5:00 AM 12/6 | 8.14 | 38.6 |
| 4:30 AM 12/6 | 8.13 | 38.6 |
| 4:00 AM 12/6 | 8.15 | 38.7 |
| 3:30 AM 12/6 | 8.16 | 38.7 |
| 3:00 AM 12/6 | 8.17 | 38.8 |
| 2:30 AM 12/6 | 8.17 | 38.8 |
| 2:00 AM 12/6 | 8.2 | 39 |
| 1:30 AM 12/6 | 8.2 | 39 |
| 1:00 AM 12/6 | 8.21 | 39 |
| 12:30 AM 12/6 | 8.22 | 39.1 |
| 12:00 AM 12/6 | 8.25 | 39.2 |
| 11:30 PM 12/5 | 8.26 | 39.3 |
| 11:00 PM 12/5 | 8.24 | 39.2 |
| 10:30 PM 12/5 | 8.28 | 39.4 |
| 10:00 PM 12/5 | 8.28 | 39.4 |
| 9:30 PM 12/5 | 8.28 | 39.4 |
| 9:00 PM 12/5 | 8.31 | 39.6 |
| 8:30 PM 12/5 | 8.33 | 39.7 |
| 8:00 PM 12/5 | 8.33 | 39.7 |
| 7:30 PM 12/5 | 8.34 | 39.7 |
| 7:00 PM 12/5 | 8.35 | 39.8 |
| 6:30 PM 12/5 | 8.36 | 39.8 |
| 6:00 PM 12/5 | 8.38 | 39.9 |
| 5:30 PM 12/5 | 8.38 | 39.9 |
| 5:00 PM 12/5 | 8.39 | 40 |
42.2' -
This 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' -
Floor of the gage house.
37' -
Residences north of St. Charles become cut off near this height.
36' -
Major flooding begins. The levee at the Highway 370 bridge is overtopped.
35' -
The 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.
34.5' -
Missouri Highway 94 near Route H will be closed in both directions near this height.
33.5' -
Highway 94 floods downstream of St Charles.
33' -
Up to 7 non-Federal levees are overtopped. (USACE)
32.5' -
The west end of Greens Bottom Road floods. This road connects Pittman Hill Road and Jungs Station Road south of 94.
32' -
Near this height, Missouri Bottom Road begins flooding between Prouhet Farm Road and Aubuchon Road.
30.7' -
Near this height, the base of the Lewis and Clark Boat House will begin flooding.
28' -
Near this height, Aubuchon Road and Charbonier Road begin flooding between Teson Road and Riverwood Estates Boulevard.
27' -
The Katy Trail begins flooding near this height along Hawning Road, about 2 miles north northeast of the Highway 370 bridge.
25' -
Downstream near this stage, Missouri Route H at Island Road and agricultural bottomland may begin flooding, depending on Mississippi River flow and backwater.
21' -
An access road to farmland on Bonhomme Island gets cut off above this height.
| Date | Stage (ft) |
|---|---|
| Jun 24, 1844 | 40.11 |
| Aug 2, 1993 | 40.04 |
| Oct 7, 1986 | 37.5 |
| Jul 20, 1951 | 37.3 |
| Jun 7, 1903 | 36.8 |
| May 22, 1943 | 36.6 |
| Apr 29, 1944 | 36.5 |
| May 21, 1995 | 36.5 |
| Apr 26, 1973 | 36.4 |
| May 5, 2017 | 35.91 |
| Jun 9, 2019 | 35.59 |
| Apr 15, 1994 | 35.4 |
| Jul 1, 1947 | 35.4 |
| Jun 8, 1935 | 35.2 |
| Dec 31, 2015 | 35.11 |
| Jun 29, 1942 | 34.8 |
| May 19, 1990 | 34.6 |
| Feb 26, 1985 | 34 |
| May 4, 1983 | 33.9 |
| Dec 7, 1982 | 33.9 |
Data provided by the National Weather Service.
