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Illinois River near La Salle

Critical Stages
19' - Action
20' - Flood
27' - Moderate
31' - Major

Latest Observation

Updated: 2:45 PM CST 12/17/25

Status: No Flooding

Stage: 11.25 ft

Flow: 0 kcfs

Forecast

TimeStage (ft)Flow (kcfs)
6 PM 12/17 11.2 0
12 AM 12/18 11.2 0
6 AM 12/18 11.2 0
12 PM 12/18 11.2 0
6 PM 12/18 11.3 0
12 AM 12/19 11.6 0.0001
6 AM 12/19 12.5 0.029
12 PM 12/19 13.1 1.18
6 PM 12/19 13.3 1.88
12 AM 12/20 13.4 2.24
6 AM 12/20 13.4 2.24
12 PM 12/20 13.4 2.24
6 PM 12/20 13.4 2.24
12 AM 12/21 13.3 1.88
6 AM 12/21 13 0.834
12 PM 12/21 12.7 0.0984
6 PM 12/21 12.5 0.029
12 AM 12/22 12.4 0.0157
6 AM 12/22 12.2 0.0045
12 PM 12/22 12.1 0.0024
6 PM 12/22 11.9 0.0007
12 AM 12/23 11.8 0.0003
6 AM 12/23 11.8 0.0003
12 PM 12/23 11.7 0.0002
6 PM 12/23 11.7 0.0002
12 AM 12/24 11.7 0.0002
6 AM 12/24 11.6 0.0001
TimeStage (ft)Flow (kcfs)
2:45 PM 12/17 11.25 0
2:30 PM 12/17 11.3 0
2:15 PM 12/17 11.31 0
2:00 PM 12/17 11.38 0
1:45 PM 12/17 11.45 0
1:30 PM 12/17 11.44 0
1:15 PM 12/17 11.5 0
1:00 PM 12/17 11.43 0
12:45 PM 12/17 11.41 0
12:30 PM 12/17 11.4 0
12:15 PM 12/17 11.41 0
12:00 PM 12/17 11.41 0
11:45 AM 12/17 11.4 0
11:30 AM 12/17 11.42 0
11:15 AM 12/17 11.39 0
11:00 AM 12/17 11.37 0
10:45 AM 12/17 11.38 0
10:30 AM 12/17 11.34 0
10:15 AM 12/17 11.28 0
10:00 AM 12/17 11.33 0
9:45 AM 12/17 11.25 0
9:30 AM 12/17 11.28 0
9:15 AM 12/17 11.15 0
9:00 AM 12/17 11.2 0
8:45 AM 12/17 11.19 0
8:30 AM 12/17 11.21 0
8:15 AM 12/17 11.17 0
8:00 AM 12/17 11.17 0
7:45 AM 12/17 11.11 0
7:30 AM 12/17 11.08 0
Hydrograph for Illinois River near La Salle
34.5' - North Utica Village Hall, police department, and wastewater treatment plant property are threatened.
33' - A couple structures are threatened near the river in downtown La Salle.
32' - Numerous industrial and utility properties are threatened along Water Street near downtown LaSalle. A few residences threatened in North Utica. IL-178 (Clark Street) threatened in North Utica.
31' - A couple structures threatened in North Utica.
30' - La Salle water pumping station property is threatened.
28.5' - Water Street is threatened in Peru.
28' - Dee Bennet Road is threatened between Ottawa and Utica.
22' - Lower parking lot at Starved Rock State Park is inundated east of La Salle. High water levels begin to impact shipping interests along the river.
20' - Agricultural areas in La Salle, Spring Valley, and Peru are inundated.
17.5' - Low-lying agricultural land near the river is inundated.
DateStage (ft)
Apr 20, 2013 34.44
Sep 16, 2008 33.79
May 20, 2020 33.14
May 3, 2019 32.14
Dec 5, 1982 32.05
Mar 12, 2009 32.02
Mar 21, 1979 31.75
Mar 6, 1985 31.7
May 22, 1943 31
Feb 23, 1997 30.83
Feb 23, 2018 30.61
Aug 26, 2007 30.34
Jan 22, 1916 30.2
May 16, 1970 30.1
Dec 31, 2015 29.73
Nov 29, 1990 29.27
Mar 27, 1904 29.2
Jun 24, 2015 28.98
Jan 15, 2005 28.94
May 14, 2002 28.86

Data provided by the National Weather Service.