Major Flood
50 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
44 ft
Minor Flood
40 ft
Action Stage
35 ft
What Floods at Each Level
61 ft
The river level is at the net grade protection of the levee system
60 ft
The river is at the lowest height of the back ring protection levee around the city of Simmesport
43 ft
The river stage is at the natural ground elevation of areas protected by the levee system
40 ft
There will be flooding of areas inside the levees of the Atchafalaya floodway. Considerable flooding in the backwater storage area in Avoyelles Parish.
35 ft
Backwater flooding of unprotected areas above Simmesport will begin
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 |
|---|---|---|
| May 15, 1927 | 59.13 ft | — |
| May 15, 1922 | 57.33 ft | — |
| Apr 29, 1945 | 57.14 ft | — |
About This Gauge
USGS Site
NWS LID
SMML1
River
Atchafalaya River
County
Avoyelles, LA
Coordinates
30.9825°N, 91.7983°W
Get Flood Alerts for Atchafalaya 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 Atchafalaya River at Simmesport?
The Atchafalaya River at Simmesport gauge is maintained by USGS (site 07381490) 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 Atchafalaya River at Simmesport?
The NWS-defined flood stage for Atchafalaya River at Simmesport is 40 feet. Action stage begins at 35 feet. Moderate flooding starts at 44 feet, and major flooding at 50 feet.
How do I get alerts when Atchafalaya River rises?
Download StormCast free on Google Play, go to River Gauges, and add Atchafalaya River at Simmesport to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category.
Where is the Atchafalaya River at Simmesport gauge located?
The gauge is located in Avoyelles County, Louisiana at coordinates 30.9825°N, 91.7983°W. USGS site number: 07381490. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Atchafalaya River
On This River
Downstream: Atchafalaya River at Melville
More Resources
Source & Notes
Data provided by: U.S. Army Corps of Engineers, Observations courtesy of U.S. 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 48 hours into the future from the forecast issuance time.