Kaskaskia River at New Athens, IL
River level and flood forecast · St. Clair County
Normal68.6 ftas of Mon 2 PM
The river is 10.4 ft below flood stage (79 ft).
Flow: 73 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Sun, Dec 31, 6 PM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 85 ft |
| Moderate flood stage | 82 ft |
| Flood stage | 79 ft |
| Action stage | 77 ft |
| Record crest (January 2, 2016) | 95.63 ft |
What floods at each level
From the National Weather Service, highest first.
- 82.2 ftThe RV lot begins flooding along the left bank upstream from the gauge.
Highest crests on record
- 95.63 ft — January 2, 2016
- 93.21 ft — May 6, 2017
- 92.27 ft — June 10, 2019
- 90.33 ft — April 29, 2011
- 89.61 ft — June 6, 2013
Recent crests: 85.77 ft (April 9, 2025) · 82.71 ft (July 18, 2024) · 80.96 ft (July 11, 2024) · 79.22 ft (July 7, 2024) · 79 ft (April 4, 2022)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (NASI2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.