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Illinois River at Meredosia

Critical Stages
14' - Action
17' - Flood
22' - Moderate
24' - Major

Latest Observation

Updated: 12:00 AM CST 12/16/25

Status: No Flooding

Stage: 2.66 ft

Flow: 10.4 kcfs

Forecast

TimeStage (ft)Flow (kcfs)
6 AM 12/16 2.8 10.7
12 PM 12/16 2.8 10.7
6 PM 12/16 2.8 10.7
12 AM 12/17 2.8 10.7
6 AM 12/17 2.8 10.7
12 PM 12/17 2.8 10.7
6 PM 12/17 2.8 10.7
12 AM 12/18 2.8 10.7
6 AM 12/18 2.8 10.7
12 PM 12/18 2.8 10.7
6 PM 12/18 2.8 10.7
12 AM 12/19 2.8 10.7
6 AM 12/19 2.8 10.7
12 PM 12/19 2.8 10.7
6 PM 12/19 2.9 10.9
12 AM 12/20 2.9 10.9
6 AM 12/20 2.9 10.9
12 PM 12/20 2.9 10.9
6 PM 12/20 2.9 10.9
12 AM 12/21 3 11.1
6 AM 12/21 3 11.1
12 PM 12/21 3 11.1
6 PM 12/21 3 11.1
12 AM 12/22 3 11.1
6 AM 12/22 3 11.1
12 PM 12/22 3 11.1
6 PM 12/22 3 11.1
TimeStage (ft)Flow (kcfs)
12:00 AM 12/16 2.66 10.4
11:30 PM 12/15 2.64 10.3
11:00 PM 12/15 2.66 10.4
10:30 PM 12/15 2.67 10.4
10:00 PM 12/15 2.66 10.4
9:30 PM 12/15 2.7 10.5
9:00 PM 12/15 2.7 10.5
8:30 PM 12/15 2.77 10.6
8:00 PM 12/15 2.71 10.5
7:30 PM 12/15 2.72 10.5
7:00 PM 12/15 2.73 10.5
6:30 PM 12/15 2.8 10.7
6:00 PM 12/15 2.77 10.6
5:30 PM 12/15 2.77 10.6
5:00 PM 12/15 2.76 10.6
4:30 PM 12/15 2.79 10.7
4:00 PM 12/15 2.79 10.7
3:30 PM 12/15 2.79 10.7
3:00 PM 12/15 2.78 10.6
2:30 PM 12/15 2.81 10.7
2:00 PM 12/15 2.81 10.7
1:30 PM 12/15 2.84 10.8
1:00 PM 12/15 2.8 10.7
12:30 PM 12/15 2.78 10.6
12:00 PM 12/15 2.76 10.6
11:30 AM 12/15 2.76 10.6
11:00 AM 12/15 2.75 10.6
10:30 AM 12/15 2.73 10.5
10:00 AM 12/15 2.7 10.5
9:30 AM 12/15 2.67 10.4
Hydrograph for Illinois River at Meredosia
38' - Coon Run Levee is overtopped.
33.5' - McGee Creek Levee is overtopped.
32' - Mauvaise Terre Levee is overtopped.
31' - Meredoisa Lake Levee is overtopped.
29.8' - Burlington Northern Railroad tracks and Levee at route 104 overtop.
28' - Scott County and Northern Meredoisa Levees are overtopped and flood fighting activities begin at Willow Creek Lake and Dam.
27' - Flood fighting begins at Scott County... Coon Run... and Meredosia Lakes and Dams.
26.4' - Flood Fighting begins at Valley City Lake and Dam and floodwaters overtop Little Creek Levee.
26' - Damage begins to buildings in Meredosia. Also, the U.S. Coast Guard will consider closing the Illinois River between the LaGrange Lock and Dam and Montezuma.
25.7' - Cemetary Road begins flooding west of Old Naples Road.
25.4' - Flood Fighting begins at Little Creek Lake and Dam.
25' - Smith Lake Road is flooded south of Meredosia.
24.7' - County Roads 1625E and 1675E begin to flood northwest of Meredosia.
24' - Kochs Lane east of Shady Acres begins flooding.
23' - Flood fighting activities begin at Big Swan Lake and Dam.
22.4' - Meredosia Lake Road overtopped.
22.2' - Low roads in Florence overtopped.
22' - Cargill Company in Florence begins flood fighting activities. Also, unloading operations are shut down at the Ameren power plant.
21' - Chambers Road south of Naples floods at Mauvaise Terre Creek near this level.
20' - Beach Road just north of Shady Acres floods near this height.
18' - City of Meredosia plugs storm sewer outlets.
17.39' - Meredosia boat dock floods.
13' - Sunset Beach Road begins flooding about two miles north of Meredosia near this level.
1' - At and below this height, barge traffic will need to consider lowering tonnage to avoid grounding.
DateStage (ft)
Jul 2, 2015 28.86
May 26, 1943 28.7
Apr 27, 2013 28.69
Jun 4, 2019 28.39
May 30, 1995 28.3
Jan 5, 2016 28.03
Mar 10, 1985 27.62
May 19, 2002 27.57
Apr 19, 1979 27.28
Jul 28, 1993 26.96
Dec 12, 1982 26.4
May 23, 2009 26.25
May 2, 1973 26.25
Jun 6, 2013 25.79
Mar 24, 1982 25.56
May 23, 1933 25.5
May 27, 2020 25.39
Apr 20, 1922 25.1
Apr 29, 1944 24.86
Nov 27, 1985 24.85

Data provided by the National Weather Service.