Mermentau River at Lacassine Wildlife Refuge water level
NWS gauge LCSL1 · Cameron Parish · Lake Charles and Southwest Louisiana
stage above a datum the NWS does not state · Nov 3, 2026 at 9:00 PM CST · 2 hours ago
- Highest NWS crest
- 12.72 ft (May 19, 1980)
- Usual range
- 3.10 to 4.71 ft
- Highest since October 4, 2026
- 5.23 ft
Last 7 days
Hourly averages of the readings. The shaded band is this gauge's usual range: the middle 80% of its readings since October 4, 2026.
How to read this gauge
The number is the stage in feet on this gauge's own scale, as the NWS publishes it. The NWS gives no datum for it, so it is not a depth and can't be compared with other gauges.
Readings the NWS marks out of service are left out, and so is any single reading more than 2 ft from the readings either side of it, which is a sensor error rather than water; a newest reading that far from the one before waits for the next to agree.
The NWS does not name the agency that runs this gauge; the National Weather Service publishes its readings, which is where this site reads them.
NWS historic crests
| Date | Crest | Above minor flood stage |
|---|---|---|
| May 19, 1980 | 12.72 ft | — |
| November 5, 2004 | 12.19 ft | — |
The highest crests the National Weather Service lists for this gauge, as published, on the same scale as the reading.
Daily highs and lows since October 4, 2026
Other NWS-published gauges in Lake Charles and Southwest Louisiana
| Gauge | Stage | Datum | NWS flood stage | Updated |
|---|---|---|---|---|
| Bayou Lacassine at Lorrain Park | -0.01 ft | — | 4.0 ft below minor flood stage | 45 minutes ago |
| Bess Branch at Alligator Park | 10.35 ft | NAVD88 | 9.7 ft below minor flood stage | 60 minutes ago |
| Calcasieu River at Goos Ferry Road | 1.85 ft | NAVD88 | at or above action stage | 45 minutes ago |
| Calcasieu River at Saltwater Barrier | 3.90 ft | — | 0.1 ft below minor flood stage | 18 hours ago |
| Calcasieu River at White Oak Park | 2.28 ft | NAVD88 | at or above minor flood stage | 2 hours ago |
| Choupique Bayou at Highway 108 | 1.89 ft | — | 3.1 ft below minor flood stage | 50 minutes ago |
| Contraband Bayou at Common Street | 1.60 ft | — | 6.4 ft below minor flood stage | 45 minutes ago |
| Houston River at Anthony Ferry Road | 1.69 ft | NAVD88 | 2.8 ft below minor flood stage | 45 minutes ago |
| Indian Bayou at Coffey Road | 1.78 ft | NAVD88 | 11.2 ft below minor flood stage | 55 minutes ago |
| Little Bayou D'Inde at Wright Road | 1.13 ft | — | 4.9 ft below minor flood stage | 50 minutes ago |
| West Fork Calcasieu River at Dunn Ferry Road | 1.70 ft | — | 3.3 ft below minor flood stage | 50 minutes ago |
Download the readings
mermentau-river-at-lacassine-wildlife-refuge.csv (CSV): every reading from the last 90 days, 721 rows, with time in UTC and local time, and the reading in feet on a datum the NWS does not state.
mermentau-river-at-lacassine-wildlife-refuge-daily.csv (CSV): the low and high of every day since October 4, 2026.
Source. Readings from the gauge's operator, as published by the National Weather Service, which also sets the flood stages and lists the crests. The NWS name for this gauge is “Mermentau River at Lacassine Wildlife Refuge”. Recent readings are provisional and can be revised. This site is not affiliated with either.