gage height, Oct 23, 2026 at 2:30 PM CDT · 3 hours ago
Highest since 2007 (USGS)
15.53 ft (May 29, 2011)
Usual range
2.54 to 3.38 ft
USGS marks recent readings as provisional: they can be revised after review.
No National Weather Service alert covering St. Martin 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. It is not a water depth. USGS publishes no datum elevation for this gauge, so it can't be converted to an elevation here.
Daily highs and lows since September 11, 2026
Annual peaks since 2007
In 20 complete water years of comparable USGS records (since 2007), the highest peak was 15.53 ft on May 29, 2011. So far in water year 2027 (since October 1) the highest reading is 3.50 ft on October 4, 2026.
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.
Download the readings
middle-fork-bayou-long-at-bayou-long.csv (CSV): every reading stored for this gauge since September 11, 2026, 4,045 rows, with time in UTC and Central, gage height in feet, and the USGS approval status.
Source. Gage height from the U.S. Geological Survey. This site is not affiliated with either agency.
