Meramec River at Arnold, MO
Is Meramec River at Arnold, MO flooding right now?
Meramec River at Arnold, MO measured 9.36 ft on 2026-09-22 22:30:00 UTC. That observation was 14.6 ft below its 24 ft flood stage. This is the latest available reading, not a guarantee of current conditions.
Gauge height
9.36 ft
Streamflow
15,700 cfs
Minor flooding here begins at 24 ft, with major flooding at 38 ft. The highest crest on record was 47.26 ft on Thu, Dec 31, 2015.
Flood stages at this gauge
| Category | Stage | Current distance |
|---|---|---|
| Action | 22 ft | 12.6 ft below |
| Minor flood | 24 ft | 14.6 ft below |
| Moderate flood | 35 ft | 25.6 ft below |
| Major flood | 38 ft | 28.6 ft below |
Highest crests on record
| Stage | Date |
|---|---|
| 47.26 ft | 2015-12-31 |
| 45.62 ft | 2017-05-03 |
| 45.3 ft | 1993-08-01 |
| 43.9 ft | 1982-12-06 |
| 42.35 ft | 2019-06-09 |
Nearby gauges
| Gauge | Distance | County |
|---|---|---|
| Mattese Creek near Mattese, MO | 2.0 mi | St. Louis County |
| Mattese Creek at Theiss, near Lemay | 3.0 mi | St. Louis County |
| Martigney Creek near Arnold, MO | 4.3 mi | St. Louis County |
| Meramec River at Fenton, MO | 5.4 mi | St. Louis County |
| Gravois Creek near Mehlville, MO | 5.8 mi | St. Louis County |
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Provisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.