Gulf Coast Gauges

Jourdan River near Bay St Louis water level

USGS gauge 02481660 · Hancock County · Mississippi Gulf Coast · NWS gauge KLNM6

2.24 ft

gage height, Oct 23, 2026 at 2:45 PM CDT · 2 hours ago

Below NWS minor flood stage
3.8 ft
NWS action stage
5.0 ft
NWS minor flood stage
6.0 ft
NWS moderate flood stage
8.0 ft
NWS major flood stage
10.0 ft
Highest since 1995 (USGS)
19.97 ft (August 29, 2005)
Usual range
0.74 to 2.61 ft

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

No National Weather Service alert covering Hancock County 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

0.0 1.3 2.6 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 the gauge's zero point. This gauge's zero is set at 0 ft NAVD88, so its gage height is the water surface elevation above that datum. It is not a water depth.

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

-0.2 1.9 3.9 2026-09-11 – 2026-10-23 · bars are daily low to high

Annual peaks since 1995

In 26 complete water years of comparable USGS records (since 1995), the highest peak was 19.97 ft on August 29, 2005. So far in water year 2027 (since October 1) the highest reading is 3.87 ft on October 9, 2026, higher than the annual peak in 2 of 26 years.

2 7 12 17 21 1995 2000 2005 2010 2015 2020 2025 major 10 ft moderate 8 ft minor 6 ft action 5 ft Water year 1995: 12.55 ft on May 10, 1995 Water year 1999: 4.07 ft on March 13, 1999 Water year 2000: 3.47 ft on October 7, 1999 Water year 2001: 5.89 ft on March 4, 2001 Water year 2002: 8.49 ft on September 26, 2002 Water year 2003: 6.86 ft on October 3, 2002 Water year 2004: 4.27 ft on September 15, 2004 Water year 2005: 19.97 ft on August 29, 2005 Water year 2006: 4.23 ft on April 30, 2006 Water year 2007: 3.76 ft on October 17, 2006 Water year 2008: 9.83 ft on September 1, 2008 Water year 2009: 4.54 ft on March 28, 2009 Water year 2010: 4.32 ft on November 10, 2009 Water year 2011: 5.40 ft on September 3, 2011 Water year 2012: 10.73 ft on August 29, 2012 Water year 2014: 5.22 ft on March 29, 2014 Water year 2015: 3.92 ft on April 15, 2015 Water year 2017: 6.28 ft on June 22, 2017 Water year 2018: 6.12 ft on October 8, 2017 Water year 2019: 4.74 ft on July 13, 2019 Water year 2020: 7.61 ft on June 7, 2020 Water year 2021: 9.46 ft on August 31, 2021 Water year 2022: 4.10 ft on May 21, 2022 Water year 2024: 6.70 ft on September 12, 2024 Water year 2025: 4.59 ft on November 5, 2024 Water year 2026: 11.00 ft on June 19, 2026 Water year 2027 so far: 3.87 ft on October 9, 2026 2005 1995 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.

NWS historic crests

DateCrestAbove minor flood stage
August 29, 200519.97 ft14.0 ft
May 10, 199512.55 ft6.6 ft
June 19, 202611.00 ft5.0 ft
August 29, 201210.73 ft4.7 ft
September 1, 20089.83 ft3.8 ft
August 31, 20219.46 ft3.5 ft
September 25, 20028.49 ft2.5 ft
May 26, 20267.90 ft1.9 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

jourdan-river-near-bay-st-louis.csv (CSV): every reading stored for this gauge since September 11, 2026, 3,723 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; flood stages and historic crests from the NWS National Water Prediction Service. This site is not affiliated with either agency.