Gulf Coast Gauges

Lower Grand River at Bayou Sorrel water level

USGS gauge 07381450 · Iberville Parish · Baton Rouge · NWS gauge SRRL1

5.58 ft

gage height, Oct 23, 2026 at 3:00 PM CDT · 3 hours ago

Highest since 2002 (USGS)
11.68 ft (April 16, 2021)
Usual range
5.50 to 6.24 ft

USGS marks recent readings as provisional: they can be revised after review.

No National Weather Service alert covering Iberville 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

5.4 5.8 6.2 Oct 17 Oct 18 Oct 19 Oct 20 Oct 21 Oct 22 Oct 23

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 -4.17 ft NAVD88. It is not a water depth and not an elevation: add -4.17 ft to get the water surface elevation.

Daily highs and lows since September 11, 2026

5.2 5.9 6.7 2026-09-11 – 2026-10-23 · bars are daily low to high

Annual peaks since 2002

In 25 complete water years of comparable USGS records (since 2002), the highest peak was 11.68 ft on April 16, 2021. So far in water year 2027 (since October 1) the highest reading is 6.68 ft on October 5, 2026.

6 8 9 11 12 2005 2010 2015 2020 2025 Water year 2002: 9.22 ft on April 13, 2002 Water year 2003: 9.22 ft on February 24, 2003 Water year 2004: 11.17 ft on May 18, 2004 Water year 2005: 8.85 ft on February 15, 2005 Water year 2006: 7.30 ft on April 30, 2006 Water year 2007: 9.48 ft on January 8, 2007 Water year 2008: 9.55 ft on September 5, 2008 Water year 2009: 8.33 ft on March 28, 2009 Water year 2010: 10.40 ft on December 19, 2009 Water year 2011: 7.40 ft on September 5, 2011 Water year 2012: 8.49 ft on February 21, 2012 Water year 2013: 10.33 ft on January 15, 2013 Water year 2014: 9.41 ft on June 11, 2014 Water year 2015: 9.13 ft on April 29, 2015 Water year 2016: 10.29 ft on August 17, 2016 Water year 2017: 9.22 ft on June 7, 2017 Water year 2018: 8.38 ft on April 17, 2018 Water year 2019: 10.53 ft on May 13, 2019 Water year 2020: 8.80 ft on May 16, 2020 Water year 2021: 11.68 ft on April 16, 2021 Water year 2022: 7.53 ft on April 14, 2022 Water year 2023: 9.87 ft on January 31, 2023 Water year 2024: 8.63 ft on January 28, 2024 Water year 2025: 8.78 ft on May 10, 2025 Water year 2026: 9.94 ft on May 12, 2026 Water year 2027 so far: 6.68 ft on October 5, 2026 2021 2004 2019

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

DateCrestAbove minor flood stage
May 18, 200411.17 ft—
December 19, 200910.40 ft—
August 17, 201610.39 ft—
January 15, 201310.33 ft—
September 5, 20089.55 ft—
March 19, 20169.54 ft—
January 8, 20079.48 ft—
January 11, 20139.46 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

lower-grand-river-at-bayou-sorrel.csv (CSV): every reading stored for this gauge since September 11, 2026, 4,049 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.