Mermentau River at Lake Arthur
Louisiana — Water Level & Flood Stage
Located in Jefferson Davis County, Louisiana on the Mermentau River. Live water level data from USGS gauge 08080202, 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
27.5 ft
Moderate Flood
26.5 ft
Minor Flood
25 ft
Action Stage
24.5 ft
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Low-Water Impacts
5 ft
Stage needed to inundate designated Gulf Sturgeon critical habitat below Jim Woodruff Lock and Dam.
3 ft
Temporary (not sustainable) operating level for of Scholz Power Plant
What happens as water levels drop, per the National Weather Service.
7-Day Water Level Chart
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About This Gauge
USGS Site
NWS LID
MLAL1
River
Mermentau River
County
Jefferson Davis, LA
Coordinates
30.0728°N, 92.6592°W
Get Flood Alerts for Mermentau 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 Mermentau River at Lake Arthur?
The Mermentau River at Lake Arthur gauge is maintained by USGS (site 08080202) 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 Mermentau River at Lake Arthur?
The NWS-defined flood stage for Mermentau River at Lake Arthur is 25 feet. Action stage begins at 24.5 feet. Moderate flooding starts at 26.5 feet, and major flooding at 27.5 feet.
How do I get alerts when Mermentau River rises?
Download StormCast free on Google Play, go to River Gauges, and add Mermentau River at Lake Arthur 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 Mermentau River at Lake Arthur gauge located?
The gauge is located in Jefferson Davis County, Louisiana at coordinates 30.0728°N, 92.6592°W. USGS site number: 08080202. Data is provided by the U.S. Geological Survey and the National Weather Service.
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Source & Notes
Data provided by: Observations courtesy of U.S. Geological Survey, US Geological Survey