Mermentau River At Mermentau, LA
Is Mermentau River At Mermentau, LA flooding right now?
Mermentau River At Mermentau, LA measured 2.18 ft on 2026-11-11 18:15:00 UTC. That observation was 1.8 ft below its 4 ft flood stage. This is the latest available reading, not a guarantee of current conditions.
Gauge height
2.18 ft
Streamflow
575 cfs
Minor flooding here begins at 4 ft, with major flooding at 8 ft. The highest crest on record was 14.5 ft on Wed, Aug 7, 1940.
Flood forecast
Flood stages at this gauge
| Category | Stage | Current distance |
|---|---|---|
| Action | 4 ft | 1.8 ft below |
| Minor flood | 4 ft | 1.8 ft below |
| Moderate flood | 6 ft | 3.8 ft below |
| Major flood | 8 ft | 5.8 ft below |
Highest crests on record
| Stage | Date |
|---|---|
| 14.5 ft | 1940-08-07 |
| 10.68 ft | 2016-08-18 |
| 10.56 ft | 2013-01-15 |
| 9.47 ft | 1972-12-10 |
| 9.05 ft | 1977-04-25 |
Last 7 days
Nearby gauges
| Gauge | Distance | County |
|---|---|---|
| Bayou Plaquemine Brule @ Esterwood, LA. | 7.6 mi | Acadia Parish |
| Byu Queue De Tortue @ Riceville, LA | 9.0 mi | Acadia Parish |
| Mermentau River @ Lake Arthur, LA | 9.1 mi | Jefferson Davis Parish |
| Bayou Des Cannes west of Iota, LA | 10.3 mi | Acadia Parish |
| Byu Plaquemine Brule near Crowley, LA | 12.0 mi | Acadia Parish |
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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.