gage height, Oct 23, 2026 at 2:15 PM CDT · 4 hours ago
Below NWS minor flood stage
1.4 ft
NWS action stage
3.0 ft
NWS minor flood stage
4.0 ft
NWS moderate flood stage
7.0 ft
NWS major flood stage
9.0 ft
Highest since 1998 (USGS)
10.93 ft (August 27, 2020)
Usual range
1.56 to 3.43 ft
USGS marks recent readings as provisional: they can be revised after review.
No National Weather Service alert covering St. Mary Parish was active when this page was generated (Oct 23, 2026 at 5:50 PM CDT). Alerts are issued and expire at any time; the current list is at alerts.weather.gov.
Last 7 days
Hourly averages of USGS readings. The shaded band is this gauge's usual range: the middle 80% of its readings since September 11, 2026.
How to read this gauge
Gage height is the height of the water surface above this gauge's own zero point, which sits at -1.48 ft NAVD88. It is not a water depth and not an elevation: add -1.48 ft to get the water surface elevation.
The flood stages are the National Weather Service's, on the same scale as the gage height; they are the NWS's references for this location, not estimates made here.
Daily highs and lows since September 11, 2026
Annual peaks since 1998
In 29 complete water years of comparable USGS records (since 1998), the highest peak was 10.93 ft on August 27, 2020. So far in water year 2027 (since October 1) the highest reading is 4.20 ft on October 1, 2026, higher than the annual peak in 5 of 29 years.
Each dot is the highest gage height of a water year (October to September), from the USGS annual peak record, with recent years USGS has not published yet taken from its 15-minute readings and this site's own; hover a dot for its date. Dashed lines are NWS flood stages.
NWS historic crests
Date
Crest
Above minor flood stage
October 9, 2020
9.41 ft
5.4 ft
July 14, 2019
9.27 ft
5.3 ft
September 4, 2011
6.11 ft
2.1 ft
September 2, 2008
5.54 ft
1.5 ft
September 23, 2005
5.23 ft
1.2 ft
September 11, 1998
5.07 ft
1.1 ft
August 5, 2008
5.06 ft
1.1 ft
October 13, 2001
5.01 ft
1.0 ft
The highest crests the National Weather Service lists for this gauge, as published. They can differ from the USGS annual peaks above: USGS records the year's highest gage height, which is not always the crest the NWS lists for the same flood.
Download the readings
vermilion-bay-near-cypremort-point.csv (CSV): every reading stored for this gauge since September 11, 2026, 4,046 rows, with time in UTC and Central, gage height in feet, and the USGS approval status.