Mississippi River at Herculaneum
Missouri — Water Level & Flood Stage
Located in Jefferson County, Missouri on the Mississippi River. Live water level data from USGS, updated every 15 minutes.
Current Water Level
Gage Height
Loading...
Streamflow
Loading...
Last Reading
Loading...
This is an NWS forecast point (LID: HRCM7). Live data may be limited. View on NWS AHPS →
Flood Stages
Major Flood
37 ft
Moderate Flood
32 ft
Minor Flood
26 ft
Action Stage
24 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, the Herculaneum wastewater pumping station on Station Street begins flooding.
46 ft
Near this height, the New South bridge will begin flooding on the bridge deck at the south end of the bridge.
44.5 ft
Near this height, the New South bridge will begin flooding at the south approach to the bridge.
38.6 ft
At this height, the railroad tracks at the Herculaneum riverfront will be inundated.
36.5 ft
At this height, the ground adjacent to the office trailer at the Doe Run barge unloader will be inundated.
35.8 ft
Near this height, all 3 of the ball fields at Kades Playground will be unplayable.
34.5 ft
Near this height, two of the three ball fields at Kades Playground will be unplayable.
34.4 ft
Near this height, the Barge Unloading Building of the Doe Run Company begins flooding.
30.8 ft
Near this height, the biggest of the three ball fields at Kades Playground and the All Bark Village dog park begin flooding.
29.4 ft
Near this height, the Flux Building of the Doe Run Company begins flooding.
28.3 ft
Near this height, the walking trail (extension of Station Road) at Bates Memorial Park begins flooding.
22.8 ft
Near this height, the bottom of the utility gravel road (Station Road) begins flooding.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
Loading chart data...
Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Jul 10, 2024 | 29.79 ft | — |
| Jul 10, 2024 | 29.79 ft | — |
| Mar 21, 2021 | 29.31 ft | — |
| Mar 21, 2021 | 29.31 ft | — |
| May 7, 2022 | 27.9 ft | — |
About This Gauge
NWS LID
HRCM7
River
Mississippi River
County
Jefferson, MO
Coordinates
38.2661°N, 90.3731°W
Get Flood Alerts for Mississippi 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 Mississippi River at Herculaneum?
The Mississippi River at Herculaneum gauge is maintained by USGS 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 Mississippi River at Herculaneum?
The NWS-defined flood stage for Mississippi River at Herculaneum is 26 feet. Action stage begins at 24 feet. Moderate flooding starts at 32 feet, and major flooding at 37 feet.
How do I get alerts when Mississippi River rises?
Download StormCast free on Google Play, go to River Gauges, and add Mississippi River at Herculaneum 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 Mississippi River at Herculaneum gauge located?
The gauge is located in Jefferson County, Missouri at coordinates 38.2661°N, 90.3731°W. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Mississippi River
On This River
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Army Corps of Engineers
- 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.
- 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.