Rivers in Louisiana

Bogue Chitto River near Bush

St. Tammany County, LouisianaNWS BSHL1USGS 02492000Slidell office

Below flood stage
2.88ftStage

Observed Wed, Sep 23, 2:15 PM CDT

Flood stage
11.00 ft
Forecast crest
2.90 ftWed, Sep 23, 7:00 PM CDT
Record crest
21.36 ft2016

Open the live map with the river flood outlook

Flood stages and impacts

CategoryStage
Major flood18.00 ft
Moderate flood15.00 ft
Minor flood11.00 ft
Action9.00 ft
  1. 21.36 ftFlood of Record occurred on March 13, 2016. There will be major flooding along Louisiana Highway 21 near the river. Highway 21 bridge will be closed because of high water and parts of LA Highway 41 east of Bush will be inaccessible.
  2. 15.00 ftHomes near the river along Louisiana Highway 21 will be moderately flooded. The access road upstream of the bridge will remain inundated.
  3. 13.00 ftHomes in low-lying areas on the downstream side of Louisiana Highway 21 near the bridge will flood. The access road upstream of the bridge will remain inundated.
  4. 11.00 ftThe access road upstream of the bridge will flood. The river will leave the main channel on the left bank below the bridge flooding woodlands on either side of Louisiana Highway 21.
  5. 10.00 ftGravel pits upstream of Louisiana Highway 21 will begin to overflow threatening property at lower elevations on either side of Highway 21 in the vicinity of the bridge.

Flood outlook

Chance of flooding, September to November

CategoryChance
Minor flooding16%
Moderate flooding11%
Major floodingUnder 5%

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

Crest history

102 crests on NOAA’s list since 1938.

#DateStage
1March 13, 201621.36 ft
2April 8, 198321.22 ft
3September 2, 201219.82 ft
4March 31, 200917.50 ft
5January 27, 199017.45 ft
6March 31, 198017.31 ft
7August 14, 201617.22 ft
8February 23, 196117.04 ft
9January 30, 199416.33 ft
10January 22, 199316.00 ft
11March 23, 194315.90 ft
12December 29, 201815.79 ft
13March 6, 200115.52 ft
14April 16, 195515.43 ft
15April 16, 197415.43 ft
16February 25, 200315.32 ft
17April 30, 199715.07 ft
18March 28, 197314.80 ft
19January 12, 201314.67 ft
20April 23, 197714.64 ft
21March 2, 198714.52 ft
22September 1, 202114.49 ft
23January 10, 195014.41 ft
24August 25, 195314.39 ft
25December 18, 200914.29 ft

Most recent crests

  • June 18, 2026: 12.70 ft
  • May 11, 2026: 13.60 ft
  • January 27, 2024: 12.89 ft
  • August 28, 2022: 11.49 ft
  • March 27, 2022: 11.90 ft
  • September 17, 2021: 12.53 ft
  • September 1, 2021: 14.49 ft
  • July 22, 2021: 11.69 ft
  • June 9, 2021: 13.40 ft
  • May 15, 2021: 12.12 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.