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Kaskaskia River at Vandalia

Critical Stages
16' - Action
18' - Flood
24' - Moderate
26' - Major

Latest Observation

Updated: 1:30 AM CST 12/15/25

Status: No Flooding

Stage: 2.93 ft

Flow: 0.111 kcfs

Forecast

Forecast not available for this location.

TimeStage (ft)Flow (kcfs)
1:30 AM 12/15 2.93 0.111
1:15 AM 12/15 2.93 0.111
1:00 AM 12/15 2.87 0.103
12:45 AM 12/15 2.81 0.0952
12:30 AM 12/15 2.8 0.094
12:15 AM 12/15 2.81 0.0952
12:00 AM 12/15 2.85 0.1
11:45 PM 12/14 2.9 0.107
11:30 PM 12/14 2.93 0.111
11:15 PM 12/14 2.93 0.111
11:00 PM 12/14 2.88 0.104
10:45 PM 12/14 2.85 0.1
10:30 PM 12/14 2.84 0.0991
10:15 PM 12/14 2.86 0.102
10:00 PM 12/14 2.9 0.107
9:45 PM 12/14 2.94 0.112
9:30 PM 12/14 2.96 0.115
9:15 PM 12/14 2.94 0.112
9:00 PM 12/14 2.9 0.107
8:45 PM 12/14 2.88 0.104
8:30 PM 12/14 2.88 0.104
8:15 PM 12/14 2.91 0.108
8:00 PM 12/14 2.95 0.114
7:45 PM 12/14 2.98 0.118
7:30 PM 12/14 2.99 0.12
7:15 PM 12/14 2.97 0.117
7:00 PM 12/14 2.94 0.112
6:45 PM 12/14 2.92 0.11
6:30 PM 12/14 2.94 0.112
6:15 PM 12/14 2.98 0.118
Hydrograph for Kaskaskia River at Vandalia
33.29' - Flood waters reach the instrument shelf of the manometer gage house.
31' - Floodwaters will threaten the wastewater treatment facility near this height.
30.5' - Flood waters reach the floor of the gage house.
27.9' - U.S. Highway 51 south of Vandalia begins to flood near this height.
27.5' - Near this level, the left bank levee just south of the U.S. Highway 51 bridge is overtopped.
26' - The Dively and Vandalia Levees begin to be overtopped.
25.8' - Along South 4th Street, numerous homes begin flooding near the St. Clair Street intersection.
25.5' - South 4th Street begins flooding near and south of Jefferson Street in Vandalia.
23' - Agricultural levee begins to be slightly overtopped. No residences are affected at this level.
19.2' - State Highway J just east of County Road 206 begins to flood near this height.
18' - Flood Stage. Minor flooding begins. Unprotected farmland begins to flood.
DateStage (ft)
May 8, 2002 28.27
Apr 19, 2013 27.88
Jan 12, 2020 27.84
Dec 28, 2015 27.83
Jan 6, 2005 27.7
May 1, 2017 27.65
Apr 28, 2011 27.45
Apr 30, 1996 27.41
May 18, 1995 27.4
Jun 29, 1951 27.39
Apr 6, 2025 27.22
Jan 4, 1950 27.1
Feb 24, 1985 26.95
Dec 12, 1985 26.71
Apr 13, 1994 26.57
May 18, 1990 26.45
Feb 8, 1999 26.41
Mar 4, 1979 26.39
Apr 1, 2022 26.21
Mar 20, 2008 26.17

Data provided by the National Weather Service.