Meramec River at Arnold
Missouri — Water Level & Flood Stage
Located in Jefferson County, Missouri on the Meramec River. Live water level data from USGS gauge 07019300, updated every 15 minutes.
Current Water Level
Gage Height
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Streamflow
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Last Reading
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Flood Stages
Major Flood
38 ft
Moderate Flood
35 ft
Minor Flood
24 ft
Action Stage
22 ft
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
47 ft
Near this height, Suson Way Court off Wells Road and Kerth Forest Drive near Kerth Road begin flooding.
46.5 ft
During the flood of December 2015, MODOT closed I-55 in both directions near this height.
43.5 ft
Missouri Highway 141 near Springdale Park and Hilltop Drive will close near this height.
43 ft
Keystone Court walk-out basements and patios in south Fenton begin flooding near this height.
42.9 ft
Missouri Route 21, also known as Tesson Ferry Road, is closed near this height.
42.5 ft
Water enters the office trailer at used car lot at the bottom of Hilltop Drive near Highway 141 and Romaine Creek.
40.5 ft
Near this height, Heintz Road near New Baumgartner Road begins flooding.
40 ft
Winter Valley Drive walk-out basements in south Fenton start flooding near this height.
39.5 ft
The houses along Convair Drive in Arnold begin flooding.
38 ft
Near this height, Yaeger Road near the Mattese Creek bridge begins flooding.
37.4 ft
Homes on Countryside Circle, Eljon Drive, Babbs Lane, and Lavernal Lane begin flooding.
36.5 ft
Houses on Cool Valley Drive east of Highway 141 begin flooding. In Arnold, the corner of Convair Drive and Douglas Drive begins flooding.
36.4 ft
In South County, New Baumgartner Road near the Mattese Creek bridge southwest of Heintz Road begins to flood.
35.1 ft
Intersection of Romaine Creek Road and Old Missouri 141 begins flooding.
35 ft
Covered Bridge RV Park and Storage begins flooding near this height east of Highway 141.
34.3 ft
Near this height, Old Baumgartner Road begins flooding near the Mattese Creek bridge.
32 ft
Near this height, New Baumgartner Road in front of the Fred Weber Quarry begins flooding.
31 ft
Near this height, Old Baumgartner Road near Brookstone Terrace Drive begins flooding.
30 ft
Wells Road below Suson Woods begins flooding at this height.
27 ft
Meramec Bottom Road between Wells Road and Kerth Road begins flooding near this height.
26 ft
Athletic fields east of I-55 begin flooding near this height.
25.1 ft
St. 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.
24.7 ft
Hawkins Road south of Meramec Bottom Road begins flooding.
24 ft
Corisande Hills Road begins flooding at this height. Meramec Bottom Road between Hagemann Road and Highway 21 begins flooding.
23.9 ft
The 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.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Dec 31, 2015 | 47.26 ft | — |
| Dec 31, 2015 | 47.26 ft | — |
| May 3, 2017 | 45.62 ft | — |
| May 3, 2017 | 45.62 ft | — |
| Jul 31, 1993 | 45.3 ft | -9,999 cfs |
About This Gauge
USGS Site
NWS LID
ARNM7
River
Meramec River
County
Jefferson, MO
Coordinates
38.4567°N, 90.3606°W
Get Flood Alerts for Meramec River
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of Meramec River at Arnold?
The Meramec River at Arnold gauge is maintained by USGS (site 07019300) and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Meramec River at Arnold?
The NWS-defined flood stage for Meramec River at Arnold is 24 feet. Action stage begins at 22 feet. Moderate flooding starts at 35 feet, and major flooding at 38 feet.
How do I get alerts when Meramec River rises?
Download StormCast free on Google Play, go to River Gauges, and add Meramec River at Arnold to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category — even when your screen is off.
Where is the Meramec River at Arnold gauge located?
The gauge is located in Jefferson County, Missouri at coordinates 38.4567°N, 90.3606°W. USGS site number: 07019300. Data is provided by the U.S. Geological Survey and the National Weather Service.
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Source & Notes
Data provided by: The Water Management page of the USACE - St. Louis District
- 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.