Gulf Coast Gauges

Welsh Gully at J. Broussard Road near Prairieville water level

USGS gauge 07380102 · Ascension Parish · Baton Rouge · NWS gauge WGPL1

0.32 ft

gage height, Oct 23, 2026 at 3:00 PM CDT · 2 hours ago

Highest since 1998 (USGS)
19.86 ft (August 15, 2016)
Usual range
0.15 to 1.30 ft

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

No National Weather Service alert covering Ascension Parish was active when this page was generated (Oct 23, 2026 at 5:05 PM CDT). Alerts are issued and expire at any time; the current list is at alerts.weather.gov.

Last 7 days

0.1 0.7 1.3 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 0.71 ft NAVD88. It is not a water depth and not an elevation: add 0.71 ft to get the water surface elevation.

Daily highs and lows since September 11, 2026

0.1 1.0 1.9 2026-09-11 – 2026-10-23 · bars are daily low to high

Annual peaks since 1998

In 28 complete water years of comparable USGS records (since 1998), the highest peak was 19.86 ft on August 15, 2016. So far in water year 2027 (since October 1) the highest reading is 1.87 ft on October 10, 2026.

0 6 11 16 21 2000 2005 2010 2015 2020 2025 Water year 1998: 10.47 ft on January 10, 1998 Water year 1999: 7.66 ft on March 16, 1999 Water year 2000: 6.81 ft on October 8, 1999 Water year 2001: 13.30 ft on June 8, 2001 Water year 2002: 8.27 ft on September 26, 2002 Water year 2003: 10.81 ft on February 25, 2003 Water year 2004: 10.49 ft on May 17, 2004 Water year 2005: 10.55 ft on September 24, 2005 Water year 2006: 8.84 ft on April 29, 2006 Water year 2007: 9.39 ft on December 30, 2006 Water year 2008: 10.70 ft on September 6, 2008 Water year 2009: 9.10 ft on March 27, 2009 Water year 2010: 8.38 ft on December 8, 2009 Water year 2011: 7.85 ft on January 5, 2011 Water year 2012: 10.22 ft on May 2, 2012 Water year 2013: 10.85 ft on January 14, 2013 Water year 2014: 10.06 ft on April 7, 2014 Water year 2015: 8.68 ft on June 25, 2015 Water year 2016: 19.86 ft on August 15, 2016 Water year 2017: 7.17 ft on May 3, 2017 Water year 2018: 7.53 ft on January 27, 2018 Water year 2019: 10.31 ft on June 6, 2019 Water year 2020: 8.91 ft on July 6, 2020 Water year 2021: 11.38 ft on May 18, 2021 Water year 2022: 7.89 ft on June 2, 2022 Water year 2023: 8.70 ft on December 30, 2022 Water year 2025: 8.59 ft on July 30, 2025 Water year 2026: 9.25 ft on May 11, 2026 Water year 2027 so far: 1.87 ft on October 10, 2026 2016 2001 2021

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
August 17, 201614.49 ft—
March 14, 201612.24 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

welsh-gully-at-j-broussard-road-near-prairieville.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.

Source. Gage height from the U.S. Geological Survey. This site is not affiliated with either agency.