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Bayou Liberty near Slidell

Highest listed crest 11.54 ftFlood stage 7.0 ft16 crests since 1998

The Bayou Liberty near Slidell crested at major flood stage 1 time among the 16 crests the National Weather Service lists from 1998 to 2021. The highest, 11.54 ft on August 29, 2005, was major flooding, 4.54 feet above flood stage.

The gauge

Highest listed crest
11.54 ft
August 29, 2005
Flood stage
7.0 ft
Major flooding from 11.0 ft
Crests at major
1
66th of 107 gauges in Louisiana
Most recent flood crest
August 30, 2021
9.02 ft, moderate flooding
Location
St. Tammany Parish
Near Slidell (3.0 mi)

Flood stages

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

Flood categories, Bayou Liberty near Slidell
Action stage6.02Dec 8, 2009The level at which the NWS or its partners begin to take action
Flood stage (minor)7.05Aug 30, 2012Minimal or no property damage, but possibly some public threat
Moderate flood stage9.01Aug 30, 2021Some inundation of structures and roads near the stream
Major flood stage11.01Aug 29, 2005Extensive inundation of structures and roads

Every listed crest

16 crests from 1998 to 2021. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Bayou Liberty near Slidell, 1998 to 2021 24681012ft Flood stage 7.0 ftMajor 11.0 ft Jan 7, 1998: 7.08 ft, minor floodingSep 26, 2002: 7.13 ft, minor floodingJul 1, 2003: 7.33 ft, minor floodingMay 13, 2004: 5.94 ft, below flood stageAug 29, 2005: 11.54 ft, major floodingApr 30, 2006: 3.07 ft, below flood stageMay 31, 2007: 7.01 ft, minor floodingOct 22, 2007: 6.33 ft, action stageMar 27, 2009: 3.91 ft, below flood stageDec 8, 2009: 6.01 ft, action stageSep 4, 2011: 5.46 ft, below flood stageAug 30, 2012: 8.39 ft, minor floodingFeb 26, 2013: 4.05 ft, below flood stageMar 28, 2014: 4.71 ft, below flood stageApr 14, 2015: 5.45 ft, below flood stageAug 30, 2021: 9.02 ft, moderate flooding Highest, 11.54 ft, Aug 29, 2005 20002005201020152020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Bayou Liberty near Slidell 1990s: 1 2000s: 4 4 2010s: 1 2020s: 1 1990s2000s2010s2020s
  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

Highest listed crests, Bayou Liberty near Slidell
1Aug 29, 200511.54+4.54Major—
2Aug 30, 20219.02+2.02Moderate—
3Aug 30, 20128.39+1.39Minor—
4Jul 1, 20037.33+0.33Minor—
5Sep 26, 20027.13+0.13Minor—
6Jan 7, 19987.08+0.08Minor—
7May 31, 20077.01+0.01Minor—
8Oct 22, 20076.33−0.67Action—
9Dec 8, 20096.01−0.99Action—
10May 13, 20045.94−1.06Below flood stage—
11Sep 4, 20115.46−1.54Below flood stage—
12Apr 14, 20155.45−1.55Below flood stage—
13Mar 28, 20144.71−2.29Below flood stage—
14Feb 26, 20134.05−2.95Below flood stage—
15Mar 27, 20093.91−3.09Below flood stage—
16Apr 30, 20063.07−3.93Below flood stage—

Other gauges in St. Tammany Parish

Flood gauges in St. Tammany Parish
Bush11.021.36 ft, Mar 13, 20163
Boston Street6.019.20 ft, Mar 12, 20162
Camp Covington45.061.14 ft, Mar 11, 20161
Slidell10.011.12 ft, Mar 15, 20160
Pearl River14.021.05 ft, Apr 9, 198315
Covington20.032.00 ft, Feb 3, 19886
Folsom16.025.25 ft, Mar 12, 201631

St. Tammany Parish: every hazard · River floods across the country · Louisiana

NOAA National Water Prediction Service, gauge LBSL1, 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.