Rivers in Missouri
Meramec River at Arnold
Below flood stage
7.62ftStage
Observed Mon, Sep 21, 9:30 PM CDT
- Flood stage
- 24.00 ft
- Record crest
- 47.26 ft2015
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 38.00 ft |
| Moderate flood | 35.00 ft |
| Minor flood | 24.00 ft |
| Action | 22.00 ft |
- 47.00 ftNear this height, Suson Way Court off Wells Road and Kerth Forest Drive near Kerth Road begin flooding.
- 46.50 ftDuring the flood of December 2015, MODOT closed I-55 in both directions near this height.
- 43.50 ftMissouri Highway 141 near Springdale Park and Hilltop Drive will close near this height.
- 43.00 ftKeystone Court walk-out basements and patios in south Fenton begin flooding near this height.
- 42.90 ftMissouri Route 21, also known as Tesson Ferry Road, is closed near this height.
- 42.50 ftWater enters the office trailer at used car lot at the bottom of Hilltop Drive near Highway 141 and Romaine Creek.
- 40.50 ftNear this height, Heintz Road near New Baumgartner Road begins flooding.
- 40.00 ftWinter Valley Drive walk-out basements in south Fenton start flooding near this height.
- 39.50 ftThe houses along Convair Drive in Arnold begin flooding.
- 38.00 ftNear this height, Yaeger Road near the Mattese Creek bridge begins flooding.
- 37.40 ftHomes on Countryside Circle, Eljon Drive, Babbs Lane, and Lavernal Lane begin flooding.
- 36.50 ftHouses on Cool Valley Drive east of Highway 141 begin flooding. In Arnold, the corner of Convair Drive and Douglas Drive begins flooding.
- 36.40 ftIn South County, New Baumgartner Road near the Mattese Creek bridge southwest of Heintz Road begins to flood.
- 35.10 ftIntersection of Romaine Creek Road and Old Missouri 141 begins flooding.
- 35.00 ftCovered Bridge RV Park and Storage begins flooding near this height east of Highway 141.
- 34.30 ftNear this height, Old Baumgartner Road begins flooding near the Mattese Creek bridge.
- 32.00 ftNear this height, New Baumgartner Road in front of the Fred Weber Quarry begins flooding.
- 31.00 ftNear this height, Old Baumgartner Road near Brookstone Terrace Drive begins flooding.
- 30.00 ftWells Road below Suson Woods begins flooding at this height.
- 27.00 ftMeramec Bottom Road between Wells Road and Kerth Road begins flooding near this height.
- 26.00 ftAthletic fields east of I-55 begin flooding near this height.
- 25.10 ftSt. Louis County closes the following roads at this height: Butler Hill west of Summerhedge Place, Meramec Bottom Road between Hagemann Road and Highway 21, Hawkins Road south of Meramec Bottom Road, and Old Telegraph Road at Earl Widman County Park.
- 24.70 ftHawkins Road south of Meramec Bottom Road begins flooding.
- 24.00 ftCorisande Hills Road begins flooding at this height. Meramec Bottom Road between Hagemann Road and Highway 21 begins flooding.
- 23.90 ftThe boat ramp and fishing banks at Flamm City Access and the fishing banks at Arnold City Park are flooded near this height. At Flamm City Access, this height will vary with the Mississippi River flow.
Flood outlook
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | 20% |
| Moderate flooding | 6% |
| Major flooding | Under 5% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.
Crest history
90 crests on NOAA’s list since 1973.
| # | Date | Stage |
|---|---|---|
| 1 | December 31, 2015 | 47.26 ft |
| 2 | May 3, 2017 | 45.62 ft |
| 3 | August 1, 1993 | 45.30 ft |
| 4 | December 6, 1982 | 43.90 ft |
| 5 | June 9, 2019 | 42.35 ft |
| 6 | April 14, 1994 | 41.70 ft |
| 7 | May 21, 1995 | 41.10 ft |
| 8 | May 4, 1983 | 39.80 ft |
| 9 | March 22, 2008 | 39.35 ft |
| 10 | June 4, 2013 | 39.05 ft |
| 11 | April 28, 1973 | 38.90 ft |
| 12 | April 16, 1979 | 38.00 ft |
| 13 | May 18, 2002 | 36.70 ft |
| 14 | October 9, 1986 | 36.40 ft |
| 15 | November 22, 1985 | 36.20 ft |
| 16 | February 27, 1985 | 35.70 ft |
| 17 | June 23, 2015 | 35.65 ft |
| 18 | April 30, 2011 | 35.48 ft |
| 19 | July 1, 2008 | 35.35 ft |
| 20 | September 19, 2008 | 34.40 ft |
| 21 | April 18, 1993 | 34.30 ft |
| 22 | November 3, 2009 | 34.04 ft |
| 23 | November 18, 1993 | 33.90 ft |
| 24 | April 25, 2013 | 33.70 ft |
| 25 | April 22, 2013 | 33.66 ft |
Most recent crests
- May 1, 2026: 27.36 ft
- April 23, 2025: 24.21 ft
- April 9, 2025: 30.08 ft
- November 9, 2024: 32.17 ft
- May 11, 2024: 27.81 ft
- March 28, 2023: 26.50 ft
- May 8, 2022: 29.37 ft
- April 3, 2022: 24.38 ft
- June 28, 2021: 27.21 ft
- April 14, 2021: 26.61 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 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.
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.