Gulf Coast Gauges

Biloxi River near Lyman water level

USGS gauge 02481130 · Harrison County · Mississippi Gulf Coast · NWS gauge LYMM6

5.92 ft

gage height, Oct 23, 2026 at 2:30 PM CDT · 3 hours ago

Highest since 1965 (USGS)
24.45 ft (June 19, 2026)
Usual range
4.62 to 6.39 ft

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

No National Weather Service alert covering Harrison 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

4.1 5.2 6.4 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 -3.00 ft NGVD29. It is not a water depth and not an elevation: add -3.00 ft to get the water surface elevation.

Daily highs and lows since September 11, 2026

3.8 5.7 7.6 2026-09-11 – 2026-10-23 · bars are daily low to high

Annual peaks since 1965

In 60 complete water years of comparable USGS records (since 1965), the highest peak was 24.45 ft on June 19, 2026. So far in water year 2027 (since October 1) the highest reading is 7.61 ft on October 2, 2026.

6 11 16 21 26 1970 1980 1990 2000 2010 2020 Water year 1965: 17.30 ft on January 23, 1965 Water year 1966: 17.02 ft on February 28, 1966 Water year 1967: 18.50 ft on September 7, 1967 Water year 1968: 17.67 ft on December 10, 1967 Water year 1969: 17.44 ft on March 18, 1969 Water year 1970: 16.33 ft on March 4, 1970 Water year 1971: 17.12 ft on December 16, 1970 Water year 1972: 18.18 ft on January 12, 1972 Water year 1973: 17.94 ft on March 25, 1973 Water year 1974: 17.53 ft on April 14, 1974 Water year 1975: 17.20 ft on May 9, 1975 Water year 1976: 16.62 ft on May 29, 1976 Water year 1977: 16.80 ft on March 12, 1977 Water year 1978: 18.70 ft on January 25, 1978 Water year 1979: 17.70 ft on February 24, 1979 Water year 1980: 19.75 ft on April 14, 1980 Water year 1981: 18.68 ft on February 11, 1981 Water year 1982: 18.26 ft on April 26, 1982 Water year 1983: 19.36 ft on April 8, 1983 Water year 1984: 18.30 ft on December 11, 1983 Water year 1985: 19.78 ft on September 24, 1985 Water year 1987: 19.46 ft on August 15, 1987 Water year 1988: 18.72 ft on April 2, 1988 Water year 1989: 17.45 ft on July 4, 1989 Water year 1990: 18.21 ft on May 13, 1990 Water year 1991: 19.17 ft on May 18, 1991 Water year 1992: 19.36 ft on February 17, 1992 Water year 1993: 19.55 ft on January 21, 1993 Water year 1994: 14.59 ft on March 10, 1994 Water year 1995: 23.95 ft on May 10, 1995 Water year 1996: 18.07 ft on December 19, 1995 Water year 1997: 15.36 ft on July 26, 1997 Water year 1998: 21.24 ft on September 29, 1998 Water year 1999: 15.76 ft on March 14, 1999 Water year 2000: 12.05 ft on April 14, 2000 (different datum or site: not compared) Water year 2001: 18.75 ft on June 11, 2001 Water year 2002: 20.33 ft on September 26, 2002 Water year 2003: 19.60 ft on July 1, 2003 Water year 2004: 17.04 ft on May 13, 2004 Water year 2005: 19.53 ft on April 1, 2005 Water year 2006: 15.47 ft on April 26, 2006 Water year 2007: 19.22 ft on December 22, 2006 Water year 2008: 17.26 ft on October 23, 2007 Water year 2009: 18.96 ft on March 28, 2009 Water year 2010: 18.40 ft on December 15, 2009 Water year 2011: 17.91 ft on September 5, 2011 Water year 2012: 22.23 ft on August 30, 2012 Water year 2013: 18.16 ft on February 26, 2013 Water year 2014: 17.37 ft on March 28, 2014 Water year 2015: 16.00 ft on January 23, 2015 Water year 2016: 20.45 ft on April 28, 2016 Water year 2017: 19.98 ft on June 22, 2017 Water year 2018: 20.09 ft on April 15, 2018 Water year 2019: 19.75 ft on May 12, 2019 Water year 2020: 17.09 ft on June 9, 2020 Water year 2021: 20.52 ft on August 31, 2021 Water year 2022: 18.37 ft on August 25, 2022 Water year 2023: 15.81 ft on January 30, 2023 Water year 2024: 16.53 ft on April 11, 2024 Water year 2025: 15.78 ft on January 13, 2025 Water year 2026: 24.45 ft on June 19, 2026 Water year 2027 so far: 7.61 ft on October 2, 2026 2026 1995 2012

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. Grey hollow dots (1 years) were measured on a different datum or at a different site, or before the gauge's datum last changed, so they are shown but not compared.

Download the readings

biloxi-river-near-lyman.csv (CSV): every reading stored for this gauge since September 11, 2026, 4,047 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.