Rivers in Illinois

Kaskaskia River at New Athens

St. Clair County, IllinoisNWS NASI2USGS 05595000St. Charles office

Below flood stage
68.59ftStage

Observed Tue, Sep 22, 2:00 AM CDT

Flood stage
79.00 ft
Record crest
95.63 ft2016

Open the live map with the river flood outlook

Flood stages and impacts

CategoryStage
Major flood85.00 ft
Moderate flood82.00 ft
Minor flood79.00 ft
Action77.00 ft
  1. 82.20 ftThe RV lot begins flooding along the left bank upstream from the gauge.

Flood outlook

Chance of flooding, September to November

CategoryChance
Minor flooding12%
Moderate flooding8%
Major floodingUnder 5%

The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.

Crest history

74 crests on NOAA’s list since 1908.

#DateStage
1January 2, 201695.63 ft
2May 6, 201793.21 ft
3June 10, 201992.27 ft
4April 29, 201190.33 ft
5June 6, 201389.61 ft
6June 23, 201587.16 ft
7April 25, 201386.95 ft
8April 5, 201986.17 ft
9April 9, 202585.77 ft
10January 15, 202085.50 ft
11July 4, 201183.22 ft
12July 18, 202482.71 ft
13March 22, 202182.36 ft
14May 21, 201082.23 ft
15July 1, 201082.02 ft
16May 31, 201181.62 ft
17July 11, 202480.96 ft
18March 31, 201880.87 ft
19December 28, 200980.57 ft
20November 3, 200980.54 ft
21March 31, 201080.38 ft
22May 26, 201779.53 ft
23October 17, 201879.31 ft
24July 7, 202479.22 ft
25April 4, 202279.00 ft

Most recent crests

  • April 9, 2025: 85.77 ft
  • July 18, 2024: 82.71 ft
  • July 11, 2024: 80.96 ft
  • July 7, 2024: 79.22 ft
  • April 4, 2022: 79.00 ft
  • March 22, 2021: 82.36 ft
  • January 15, 2020: 85.50 ft
  • June 10, 2019: 92.27 ft
  • April 5, 2019: 86.17 ft
  • October 17, 2018: 79.31 ft

Nearby

Upstream, downstream and the gauges around this one.

What this means

Forecasts by the North Central 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. 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.