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Biloxi River near Lyman

Highest listed crest 21.21 ftFlood stage 12.0 ft78 crests since 1957

The Biloxi River near Lyman crested at major flood stage 5 times among the 78 crests the National Weather Service lists from 1957 to 2026. The highest, 21.21 ft on June 19, 2026, was major flooding, 9.21 feet above flood stage.

The gauge

Highest listed crest
21.21 ft
June 19, 2026
Flood stage
12.0 ft
Major flooding from 18.0 ft
Crests at major
5
15th of 74 gauges in Mississippi
Most recent flood crest
June 19, 2026
21.21 ft, major flooding
Location
Harrison County
Near Gulfport (5.2 mi), Biloxi (7.3 mi), D'Iberville (8.9 mi)

Flood stages

The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.

Flood categories, Biloxi River near Lyman
Action stage10.02Nov 25, 2000The level at which the NWS or its partners begin to take action
Flood stage (minor)12.052Jun 7, 2026Minimal or no property damage, but possibly some public threat
Moderate flood stage16.018Aug 31, 2021Some inundation of structures and roads near the stream
Major flood stage18.05Jun 19, 2026Extensive inundation of structures and roads

Every listed crest

78 crests from 1957 to 2026. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Biloxi River near Lyman, 1957 to 2026 510152025ft Flood stage 12.0 ftMajor 18.0 ft Sep 1, 1957: 18.50 ft, major flooding; 35,000 cubic feet per secondJan 23, 1965: 14.30 ft, minor flooding; 7,950 cubic feet per secondFeb 28, 1966: 14.02 ft, minor flooding; 7,400 cubic feet per secondSep 7, 1967: 15.50 ft, minor flooding; 14,000 cubic feet per secondDec 10, 1967: 14.67 ft, minor flooding; 9,400 cubic feet per secondMar 18, 1969: 14.44 ft, minor flooding; 8,230 cubic feet per secondMar 4, 1970: 13.33 ft, minor flooding; 6,200 cubic feet per secondDec 16, 1970: 14.12 ft, minor flooding; 7,590 cubic feet per secondJan 12, 1972: 15.18 ft, minor flooding; 12,000 cubic feet per secondMar 25, 1973: 14.94 ft, minor flooding; 10,800 cubic feet per secondApr 14, 1974: 14.53 ft, minor flooding; 8,700 cubic feet per secondMay 9, 1975: 14.20 ft, minor flooding; 7,750 cubic feet per secondMay 29, 1976: 13.62 ft, minor flooding; 6,670 cubic feet per secondMar 12, 1977: 13.80 ft, minor flooding; 6,990 cubic feet per secondJan 25, 1978: 15.70 ft, minor flooding; 15,100 cubic feet per secondFeb 24, 1979: 14.70 ft, minor flooding; 9,500 cubic feet per secondApr 14, 1980: 16.75 ft, moderate flooding; 22,000 cubic feet per secondFeb 11, 1981: 15.68 ft, minor flooding; 15,000 cubic feet per secondApr 26, 1982: 15.26 ft, minor flooding; 12,600 cubic feet per secondApr 8, 1983: 16.36 ft, moderate flooding; 18,800 cubic feet per secondDec 11, 1983: 15.30 ft, minor flooding; 13,100 cubic feet per secondSep 24, 1985: 16.78 ft, moderate flooding; 22,500 cubic feet per secondAug 15, 1987: 16.46 ft, moderate flooding; 16,300 cubic feet per secondApr 2, 1988: 15.72 ft, minor flooding; 12,200 cubic feet per secondJul 4, 1989: 15.45 ft, minor flooding; 7,790 cubic feet per secondMay 13, 1990: 15.21 ft, minor flooding; 9,830 cubic feet per secondFeb 11, 1991: 15.68 ft, minor floodingMay 18, 1991: 16.17 ft, moderate flooding; 14,600 cubic feet per secondFeb 17, 1992: 16.36 ft, moderate flooding; 15,700 cubic feet per secondJan 21, 1993: 16.55 ft, moderate flooding; 16,900 cubic feet per secondMar 10, 1994: 11.59 ft, action stage; 3,880 cubic feet per secondMay 10, 1995: 20.95 ft, major flooding; 36,800 cubic feet per secondDec 19, 1995: 15.07 ft, minor flooding; 10,900 cubic feet per secondJul 26, 1997: 12.36 ft, minor flooding; 4,520 cubic feet per secondSep 29, 1998: 18.24 ft, major flooding; 24,800 cubic feet per secondMar 14, 1999: 12.76 ft, minor flooding; 4,930 cubic feet per secondApr 14, 2000: 9.05 ft, below flood stage; 2,420 cubic feet per secondNov 25, 2000: 10.50 ft, action stageJun 11, 2001: 15.75 ft, minor flooding; 13,800 cubic feet per secondSep 26, 2002: 17.33 ft, moderate flooding; 20,800 cubic feet per secondJul 1, 2003: 16.60 ft, moderate flooding; 17,600 cubic feet per secondMay 13, 2004: 14.04 ft, minor flooding; 7,000 cubic feet per secondApr 1, 2005: 16.53 ft, moderate flooding; 17,200 cubic feet per secondApr 26, 2006: 12.47 ft, minor flooding; 4,620 cubic feet per secondDec 22, 2006: 16.22 ft, moderate flooding; 15,900 cubic feet per secondOct 23, 2007: 14.26 ft, minor flooding; 7,600 cubic feet per secondMar 28, 2009: 15.96 ft, minor flooding; 14,800 cubic feet per secondDec 15, 2009: 15.40 ft, minor flooding; 12,300 cubic feet per secondSep 5, 2011: 14.91 ft, minor flooding; 10,200 cubic feet per secondAug 30, 2012: 19.23 ft, major flooding; 29,100 cubic feet per secondFeb 26, 2013: 15.16 ft, minor flooding; 11,300 cubic feet per secondMar 20, 2014: 14.37 ft, minor flooding; 7,910 cubic feet per secondJan 23, 2015: 13.00 ft, minor flooding; 5,200 cubic feet per secondApr 28, 2016: 17.45 ft, moderate flooding; 21,300 cubic feet per secondAug 12, 2016: 14.00 ft, minor floodingJun 12, 2017: 16.98 ft, moderate flooding; 19,200 cubic feet per secondApr 15, 2018: 17.08 ft, moderate floodingJan 24, 2019: 14.02 ft, minor floodingMay 13, 2019: 16.51 ft, moderate floodingJun 9, 2020: 13.85 ft, minor floodingOct 29, 2020: 15.30 ft, minor floodingMar 24, 2021: 14.18 ft, minor floodingMar 31, 2021: 12.63 ft, minor floodingApr 11, 2021: 15.60 ft, minor floodingApr 16, 2021: 16.75 ft, moderate floodingMay 12, 2021: 14.64 ft, minor floodingJun 19, 2021: 16.08 ft, moderate floodingJul 7, 2021: 14.80 ft, minor floodingJul 12, 2021: 12.11 ft, minor floodingAug 31, 2021: 17.28 ft, moderate floodingSep 16, 2021: 14.29 ft, minor floodingFeb 5, 2022: 14.29 ft, minor floodingAug 25, 2022: 15.13 ft, minor floodingJan 20, 2024: 12.87 ft, minor floodingMay 10, 2025: 12.70 ft, minor floodingJul 13, 2025: 12.78 ft, minor floodingJun 7, 2026: 15.21 ft, minor floodingJun 19, 2026: 21.21 ft, major flooding Highest, 21.21 ft, Jun 19, 2026 1960197019801990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Biloxi River near Lyman 1950s: 1 1960s: 5 1970s: 10 1980s: 9 1990s: 10 2000s: 10 2010s: 11 2020s: 19 19 1950s1960s1970s1980s1990s2000s2010s2020s
  1. These are the crests the local National Weather Service office lists for the gauge: the highest on record and recent crests. Lesser floods between them may be missing, so counts by decade are a floor.
  2. Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable.

Highest crests

The 50 highest of 78 listed crests.

Highest listed crests, Biloxi River near Lyman
1Jun 19, 202621.21+9.21Major—
2May 10, 199520.95+8.95Major36,800
3Aug 30, 201219.23+7.23Major29,100
4Sep 1, 195718.50+6.50Major35,000
5Sep 29, 199818.24+6.24Major24,800
6Apr 28, 201617.45+5.45Moderate21,300
7Sep 26, 200217.33+5.33Moderate20,800
8Aug 31, 202117.28+5.28Moderate—
9Apr 15, 201817.08+5.08Moderate—
10Jun 12, 201716.98+4.98Moderate19,200
11Sep 24, 198516.78+4.78Moderate22,500
12Apr 14, 198016.75+4.75Moderate22,000
13Apr 16, 202116.75+4.75Moderate—
14Jul 1, 200316.60+4.60Moderate17,600
15Jan 21, 199316.55+4.55Moderate16,900
16Apr 1, 200516.53+4.53Moderate17,200
17May 13, 201916.51+4.51Moderate—
18Aug 15, 198716.46+4.46Moderate16,300
19Apr 8, 198316.36+4.36Moderate18,800
20Feb 17, 199216.36+4.36Moderate15,700
21Dec 22, 200616.22+4.22Moderate15,900
22May 18, 199116.17+4.17Moderate14,600
23Jun 19, 202116.08+4.08Moderate—
24Mar 28, 200915.96+3.96Minor14,800
25Jun 11, 200115.75+3.75Minor13,800
26Apr 2, 198815.72+3.72Minor12,200
27Jan 25, 197815.70+3.70Minor15,100
28Feb 11, 198115.68+3.68Minor15,000
29Feb 11, 199115.68+3.68Minor—
30Apr 11, 202115.60+3.60Minor—
31Sep 7, 196715.50+3.50Minor14,000
32Jul 4, 198915.45+3.45Minor7,790
33Dec 15, 200915.40+3.40Minor12,300
34Dec 11, 198315.30+3.30Minor13,100
35Oct 29, 202015.30+3.30Minor—
36Apr 26, 198215.26+3.26Minor12,600
37May 13, 199015.21+3.21Minor9,830
38Jun 7, 202615.21+3.21Minor—
39Jan 12, 197215.18+3.18Minor12,000
40Feb 26, 201315.16+3.16Minor11,300
41Aug 25, 202215.13+3.13Minor—
42Dec 19, 199515.07+3.07Minor10,900
43Mar 25, 197314.94+2.94Minor10,800
44Sep 5, 201114.91+2.91Minor10,200
45Jul 7, 202114.80+2.80Minor—
46Feb 24, 197914.70+2.70Minor9,500
47Dec 10, 196714.67+2.67Minor9,400
48May 12, 202114.64+2.64Minor—
49Apr 14, 197414.53+2.53Minor8,700
50Mar 18, 196914.44+2.44Minor8,230

The worst floods along the Biloxi River

For this gauge's highest crests, the other gauges on the Biloxi River that crested above flood stage within a week.

May 10, 1995: 20.95 ft here, major flooding

  • WorthamMS · May 9, 1995 · 28.94 ft · Major · its highest

August 30, 2012: 19.23 ft here, major flooding

  • WorthamMS · Aug 30, 2012 · 26.32 ft · Major

September 29, 1998: 18.24 ft here, major flooding

  • WorthamMS · Sep 29, 1998 · 25.43 ft · Major

Gauges on the Biloxi River

In USGS station-number order, which runs downstream within a river basin.

Flood gauges on the Biloxi River
WorthamMS16.028.94 ft, May 9, 19959
Lyman this gaugeMS12.021.21 ft, Jun 19, 20265

Other gauges in Harrison County

Flood gauges in Harrison County
Wortham16.028.94 ft, May 9, 19959
D Iberville8.019.00 ft, Sep 30, 19982
Gulfport8.016.50 ft, Sep 1, 20123
Landon27.031.31 ft, Aug 31, 20121

Harrison County: every hazard · River floods across the country · Mississippi

NOAA National Water Prediction Service, gauge LYMM6, retrieved October 30, 2026. Stages in feet on the gauge's own datum, not elevation. Crests are as the National Weather Service lists them; preliminary values may be revised.