Rivers in Illinois

Mississippi River at Thebes

Alexander County, IllinoisNWS THBI2USGS 07022000West Paducah office

Below flood stage
14.43ftStage

Observed Tue, Sep 22, 2:00 AM CDT

Flood stage
33.00 ft
Record crest
47.74 ft2016

Open the live map with the river flood outlook

Flood stages and impacts

CategoryStage
Major flood42.00 ft
Moderate flood37.00 ft
Minor flood33.00 ft
Action30.00 ft
  1. 34.00 ftThe town of Thebes begins to flood.
  2. 33.00 ftThe town of Gale begins to flood.

Flood outlook

Chance of flooding, September to November

CategoryChance
Minor flooding16%
Moderate flooding7%
Major floodingUnder 5%

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

Crest history

41 crests on NOAA’s list since 1844.

#DateStage
1January 2, 201647.74 ft
2May 23, 199545.91 ft
3May 3, 201145.52 ft
4August 7, 199345.51 ft
5July 4, 184445.15 ft
6April 29, 201144.74 ft
7May 18, 200244.31 ft
8June 11, 201943.66 ft
9June 7, 201343.62 ft
10April 30, 197343.43 ft
11May 6, 201743.18 ft
12July 3, 201542.02 ft
13October 14, 198741.52 ft
14July 3, 200840.95 ft
15March 1, 198540.46 ft
16May 27, 194340.26 ft
17April 17, 199440.08 ft
18November 24, 198639.84 ft
19May 21, 199039.78 ft
20July 24, 195139.31 ft
21May 22, 201039.02 ft
22March 3, 199738.91 ft
23May 13, 196138.74 ft
24April 27, 198438.58 ft
25May 23, 200938.35 ft

Most recent crests

  • April 9, 2025: 34.28 ft
  • July 19, 2024: 33.43 ft
  • July 12, 2024: 35.77 ft
  • May 12, 2024: 34.66 ft
  • May 4, 2024: 33.14 ft
  • March 22, 2021: 36.47 ft
  • March 27, 2020: 36.32 ft
  • June 11, 2019: 43.66 ft
  • October 18, 2018: 35.84 ft
  • May 6, 2017: 43.18 ft

Nearby

Upstream, downstream and the gauges around this one.

What this means

Forecasts by the Lower Mississippi River Forecast Center. Forecasts are issued as needed during times of high water, but are not routinely available. River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 48 hours into the future from the forecast issuance time. For the latest navigation status update from the U.S. Army Corps of Engineers-St. Louis District, <a href="http://www.mvs.usace.army.mil/Missions/Navigation/Status-Reports/">click here.</a>

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.