Rivers in Louisiana

Tchefuncte River near Folsom

St. Tammany County, LouisianaNWS FLSL1USGS 07375000Slidell office

Below flood stage
4.94ftStage

Observed Tue, Sep 22, 5:00 PM CDT

Flood stage
16.00 ft
Forecast crest
4.90 ftTue, Sep 22, 7:00 PM CDT
Record crest
25.25 ft2016

Open the live map with the river flood outlook

Flood stages and impacts

CategoryStage
Major flood19.00 ft
Moderate flood17.00 ft
Minor flood16.00 ft
Action15.00 ft
  1. 25.25 ftFlood of Record occurred on March 12, 2016. Widespread inundation will occur and evacuations will be necessary. Roads will be impassable and the bridge on LA Highway 40 will be threatened.
  2. 21.50 ftStrong river current carrying debris will threaten damage to the bridge structure. There will be water in homes near Savannah Branch. Evacuation will be required near Bennet Bridge Road. There will be water over low-lying stretches of Louisiana Highway 1077 downstream of the Highway 40 bridge. Evacuation of the area around Spring Park and Albert Thompson Roads should be complete.
  3. 21.00 ftThere will be water in homes near Savannah Branch. Evacuation will be required near Bennet Bridge Road. There will be water over low lying stretches of Louisiana Highway 1077 downstream of the Highway 40 bridge. Evacuation of the area around Spring Park and Albert Thompson Roads should be complete.
  4. 19.00 ftLouisiana Highway 40 will overflow the west bank by the bridge. Evacuation of the area around Spring Park and Albert Thompson roads should be complete.
  5. 16.00 ftAreas of Spring Park and Albert Thompson Road will be inundated. Homes will flood if the river rises higher. Evacuation of those areas is recommended.

Flood outlook

Chance of flooding, September to November

CategoryChance
Minor flooding18%
Moderate flooding13%
Major flooding10%

The three-month chances are the River Forecast Centers’ long-range flood outlook, issued September 16, 2026.

Crest history

93 crests on NOAA’s list since 1944.

#DateStage
1March 12, 201625.25 ft
2August 13, 201624.28 ft
3April 6, 198324.12 ft
4August 31, 202122.72 ft
5December 28, 201822.42 ft
6May 3, 195322.26 ft
7November 14, 196122.10 ft
8February 22, 196122.07 ft
9January 21, 199321.91 ft
10March 25, 197321.63 ft
11November 27, 194821.59 ft
12September 27, 200221.56 ft
13April 22, 197721.47 ft
14May 12, 201921.09 ft
15June 17, 202621.00 ft
16February 2, 198820.96 ft
17August 31, 201220.90 ft
18July 1, 200320.83 ft
19December 26, 197320.83 ft
20December 10, 194720.62 ft
21February 13, 196620.48 ft
22April 2, 194720.37 ft
23May 8, 197220.06 ft
24October 27, 199619.94 ft
25April 12, 199519.78 ft

Most recent crests

  • June 17, 2026: 21.00 ft
  • May 10, 2026: 16.17 ft
  • January 26, 2024: 18.47 ft
  • November 26, 2022: 16.35 ft
  • February 4, 2022: 17.20 ft
  • September 16, 2021: 18.92 ft
  • August 31, 2021: 22.72 ft
  • May 12, 2019: 21.09 ft
  • December 28, 2018: 22.42 ft
  • January 22, 2017: 16.11 ft

Nearby

Upstream, downstream and the gauges around this one.

What this means

Forecasts by the Lower Mississippi River Forecast Center. Forecasts are issued routinely year-round. River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time.

Sources

Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.