Kaskaskia River at Carlyle
Highest listed crest 33.69 ftFlood stage 16.5 ft88 crests since 1908
The Kaskaskia River at Carlyle crested at major flood stage 9 times among the 88 crests the National Weather Service lists from 1908 to 2026. The highest, 33.69 ft on May 21, 1943, was major flooding, 17.19 feet above flood stage. 2 other gauges on the Kaskaskia River crested above flood stage within a week of it.
The gauge
- Highest listed crest
- 33.69 ft
- May 21, 1943; 54,400 cubic feet per second
- Flood stage
- 16.5 ft
- Major flooding from 27.0 ft
- Crests at major
- 9
- 30th of 177 gauges in Illinois
- Most recent flood crest
- March 16, 2026
- 20.48 ft, minor flooding
Flood stages
The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.
| Action stage | 15.0 | 0 | — |
| Flood stage (minor) | 16.5 | 45 | Mar 16, 2026 |
| Moderate flood stage | 23.0 | 33 | May 27, 2002 |
| Major flood stage | 27.0 | 9 | May 10, 1961 |
Every listed crest
88 crests from 1908 to 2026. Filled: at or above flood stage. Hover a crest for its date and stage.
Crests at or above flood stage, by decade
- These are the crests the local National Weather Service office lists for the gauge: the highest on record and recent crests. Lesser floods between them may be missing, so counts by decade are a floor.
- Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable.
- 14 crests measured on an earlier gauge datum are left out: 25.40 ft on Apr 18, 1909; 24.80 ft on Mar 3, 1910; 21.80 ft on May 5, 1911; 27.20 ft on Oct 7, 1911; 30.70 ft on Aug 24, 1915; 27.50 ft on Jan 17, 1930; and more.
Highest crests
The 50 highest of 88 listed crests.
| 1 | May 21, 1943 | 33.69 | +17.19 | Major |
| 2 | Jan 7, 1950 | 31.17 | +14.67 | Major |
| 3 | May 10, 1961 | 31.12 | +14.62 | Major |
| 4 | May 9, 1908 | 30.80 | +14.30 | Major |
| 5 | Jul 2, 1957 | 30.56 | +14.06 | Major |
| 6 | Apr 4, 1945 | 27.86 | +11.36 | Major |
| 7 | Apr 26, 1944 | 27.72 | +11.22 | Major |
| 8 | May 29, 1948 | 27.09 | +10.59 | Major |
| 9 | Feb 18, 1949 | 27.01 | +10.51 | Major |
| 10 | Jul 3, 1960 | 26.75 | +10.25 | Moderate |
| 11 | Feb 15, 1959 | 26.55 | +10.05 | Moderate |
| 12 | Mar 25, 1962 | 26.20 | +9.70 | Moderate |
| 13 | Jul 2, 1951 | 25.95 | +9.45 | Moderate |
| 14 | Mar 17, 1939 | 25.92 | +9.42 | Moderate |
| 15 | Dec 14, 1966 | 25.30 | +8.80 | Moderate |
| 16 | May 8, 1970 | 25.04 | +8.54 | Moderate |
| 17 | Jul 16, 1942 | 24.98 | +8.48 | Moderate |
| 18 | May 21, 1946 | 24.83 | +8.33 | Moderate |
| 19 | Aug 7, 1958 | 24.76 | +8.26 | Moderate |
| 20 | May 2, 1947 | 24.32 | +7.82 | Moderate |
| 21 | May 23, 1966 | 24.23 | +7.73 | Moderate |
| 22 | Mar 21, 1978 | 24.12 | +7.62 | Moderate |
| 23 | Jan 19, 1975 | 23.96 | +7.46 | Moderate |
| 24 | Apr 15, 1979 | 23.96 | +7.46 | Moderate |
| 25 | May 27, 2002 | 23.72 | +7.22 | Moderate |
| 26 | Mar 14, 1952 | 23.70 | +7.20 | Moderate |
| 27 | Mar 31, 1977 | 23.57 | +7.07 | Moderate |
| 28 | Dec 11, 1983 | 23.52 | +7.02 | Moderate |
| 29 | Feb 24, 1982 | 23.50 | +7.00 | Moderate |
| 30 | Jan 15, 1985 | 23.50 | +7.00 | Moderate |
| 31 | Dec 18, 1985 | 23.48 | +6.98 | Moderate |
| 32 | Feb 4, 1988 | 23.44 | +6.94 | Moderate |
| 33 | Jan 31, 1991 | 23.43 | +6.93 | Moderate |
| 34 | May 22, 1963 | 23.41 | +6.91 | Moderate |
| 35 | May 31, 1990 | 23.41 | +6.91 | Moderate |
| 36 | Jan 28, 1993 | 23.39 | +6.89 | Moderate |
| 37 | Apr 10, 1998 | 23.39 | +6.89 | Moderate |
| 38 | Dec 18, 1982 | 23.38 | +6.88 | Moderate |
| 39 | May 10, 1996 | 23.34 | +6.84 | Moderate |
| 40 | Apr 21, 1994 | 23.30 | +6.80 | Moderate |
| 41 | Mar 17, 1997 | 23.26 | +6.76 | Moderate |
| 42 | May 3, 1964 | 23.21 | +6.71 | Moderate |
| 43 | Jan 4, 2010 | 22.98 | +6.48 | Minor |
| 44 | Jan 19, 2005 | 22.97 | +6.47 | Minor |
| 45 | Feb 7, 2019 | 22.97 | +6.47 | Minor |
| 46 | Mar 14, 2011 | 22.92 | +6.42 | Minor |
| 47 | Apr 19, 2025 | 22.90 | +6.40 | Minor |
| 48 | Jan 18, 2020 | 22.88 | +6.38 | Minor |
| 49 | Feb 3, 1999 | 22.87 | +6.37 | Minor |
| 50 | Apr 26, 2013 | 22.85 | +6.35 | Minor |
The worst floods along the Kaskaskia River
For this gauge's highest crests, the other gauges on the Kaskaskia River that crested above flood stage within a week.
May 21, 1943: 33.69 ft here, major flooding
- VandaliaIL · May 18, 1943 · 24.25 ft · Moderate
- ShelbyvilleIL · May 19, 1943 · 556.95 ft · Minor
January 7, 1950: 31.17 ft here, major flooding
- VandaliaIL · Jan 4, 1950 · 27.10 ft · Major
- ShelbyvilleIL · Jan 5, 1950 · 556.41 ft · Minor
May 10, 1961: 31.12 ft here, major flooding
- VandaliaIL · May 9, 1961 · 24.90 ft · Moderate
- ShelbyvilleIL · May 12, 1961 · 552.31 ft · Minor
Gauges on the Kaskaskia River
In USGS station-number order, which runs downstream within a river basin.
| Shelbyville | IL | 558.15 ft, Jun 29, 1957 | 1 |
| Cowden | IL | 20.36 ft, May 12, 2002 | 0 |
| Vandalia | IL | 28.27 ft, May 8, 2002 | 21 |
| Carlyle this gauge | IL | 33.69 ft, May 21, 1943 | 9 |
| Carlyle Dam Tailwater | IL | 428.20 ft, Dec 15, 1966 | 0 |
| New Athens | IL | 95.63 ft, Jan 2, 2016 | 10 |
Other gauges in Clinton County
| Carlyle Dam Tailwater | 428.20 ft, Dec 15, 1966 | 0 |
Clinton County: every hazard · River floods across the country · Illinois
NOAA National Water Prediction Service, gauge KCAI2, retrieved October 30, 2026. Stages in feet on the gauge's own datum, not elevation. Crests are as the National Weather Service lists them; preliminary values may be revised.