Mermentau River at Grand Chenier water level

Name: Mermentau River at Grand Chenier stage (U.S. Army Corps of Engineers 70900)
Creator: U.S. Army Corps of Engineers, New Orleans District
License: https://gulfcoastgauges.com/about/#using-the-data

U.S. Army Corps of Engineers gauge 70900 · Cameron Parish · Lake Charles and Southwest Louisiana

3.33 ft

stage above a datum the Corps does not state · Oct 27, 2026 at 1:00 PM CDT · 2 hours ago

Usual range: 1.95 to 4.19 ft
Highest since September 30, 2025: 5.77 ft

No National Weather Service alert covering Cameron Parish was active when this page was generated (Oct 27, 2026 at 2:35 PM CDT). Alerts are issued and expire at any time; the current list is at alerts.weather.gov.

Last 7 days

Hourly averages of the Corps' readings. The shaded band is this gauge's usual range: the middle 80% of its readings since September 30, 2025.

How to read this gauge

The number is the stage in feet above a datum the Corps does not state: a height on this gauge's own scale, not a depth, and not comparable with other gauges.

Daily highs and lows since September 30, 2025

Other Corps gauges in Lake Charles and Southwest Louisiana

Corps gauge	Stage	Datum	NWS flood stage	Updated
Calcasieu River at Hackberry	0.43 ft	NAVD88	—	3 hours ago
Calcasieu River at Lake Charles	0.72 ft	NAVD88	3.3 ft below minor flood stage	3 hours ago
Calcasieu River near Cameron	0.50 ft	NAVD88	—	3 hours ago

Download the readings

mermentau-river-at-grand-chenier.csv (CSV): every reading from the last 90 days, 2,148 rows, with time in UTC and Central, and stage in feet on a datum the Corps does not state.

mermentau-river-at-grand-chenier-daily.csv (CSV): the low and high of every day since September 30, 2025.

Source. Stage and flood-fight phases from the U.S. Army Corps of Engineers, New Orleans District; flood stages from the National Weather Service. Recent readings are provisional and can be revised. This site is not affiliated with either.