Illinois River at Morris, IL
River level and flood forecast · Grundy County
Normal5.7 ftas of Mon 2:45 PM
The river is 10.3 ft below flood stage (16 ft).
Forecast to fall to 5.4 ft by Mon, Oct 19, 7 AM.
Flow: 7,150 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Mon, Oct 12, 9:40 AM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 22 ft |
| Moderate flood stage | 18 ft |
| Flood stage | 16 ft |
| Action stage | 13 ft |
| Record crest (April 19, 2013) | 24.91 ft |
What floods at each level
From the National Weather Service, highest first.
- 27 ftHigh water levels cause Dresden Lock to shut down.
- 22 ftMultiple residences threatened between Morris and Marseilles. Numerous roadways threatened along the river between Morris and Marseilles.
- 21 ftMorris Public Works property is threatened. West River Road is threatened.
- 20 ftLow-lying residences threatened in Morris.
- 19.5 ftOld Stage Road threatened near the Illinois and Michigan Canal between Morris and Seneca.
- 18.5 ftA few residences threatened along Cemetery Road in Morris.
- 18 ftA few roads threatened near Morris. Low-lying portions of Illini Park inundated near Marseilles.
- 16 ftPine Bluff Road threatened west of IL-47 south of Morris. Dwight Road threatened south of Morris. High water levels begin to impact shipping interests along the river.
- 12.5 ftLow-lying portions of Stratton Park inundated near IL-47 in Morris.
Highest crests on record
- 24.91 ft — April 19, 2013
- 24.84 ft — September 16, 2008
- 24.8 ft — May 19, 2020
- 23.91 ft — July 14, 1957
- 23.9 ft — February 21, 1916
Recent crests: 24.8 ft (May 19, 2020) · 15.71 ft (January 12, 2020) · 18.43 ft (September 29, 2019) · 23.03 ft (May 2, 2019) · 14.79 ft (June 23, 2018)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (MORI2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.