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Mississippi River at Clarksville Lock and Dam 24

Critical Stages
23' - Action
25' - Flood
31' - Moderate
33' - Major

Latest Observation

Updated: 11:00 AM CST 12/16/25

Status: No Flooding

Stage: 13.43 ft

Flow: 32.9 kcfs

Forecast

TimeStage (ft)Flow (kcfs)
12 PM 12/16 13.4 32.3
6 PM 12/16 13.3 30.6
12 AM 12/17 13.2 29
6 AM 12/17 13.2 29
12 PM 12/17 13.1 27.4
6 PM 12/17 13.1 27.4
12 AM 12/18 13 25.9
6 AM 12/18 13 25.9
12 PM 12/18 13 25.9
6 PM 12/18 13 25.9
12 AM 12/19 13 25.9
6 AM 12/19 13 25.9
12 PM 12/19 13 25.9
6 PM 12/19 13 25.9
12 AM 12/20 13 25.9
6 AM 12/20 13 25.9
12 PM 12/20 13 25.9
6 PM 12/20 13 25.9
12 AM 12/21 13 25.9
6 AM 12/21 13 25.9
12 PM 12/21 13 25.9
6 PM 12/21 13 25.9
12 AM 12/22 13 25.9
6 AM 12/22 13 25.9
12 PM 12/22 13 25.9
6 PM 12/22 13 25.9
12 AM 12/23 13 25.9
6 AM 12/23 13 25.9
12 PM 12/23 13 25.9
6 PM 12/23 13 25.9
12 AM 12/24 13 25.9
6 AM 12/24 13 25.9
12 PM 12/24 13 25.9
6 PM 12/24 13 25.9
12 AM 12/25 13 25.9
6 AM 12/25 13 25.9
12 PM 12/25 13 25.9
6 PM 12/25 13 25.9
12 AM 12/26 13 25.9
6 AM 12/26 13 25.9
12 PM 12/26 13 25.9
6 PM 12/26 13 25.9
12 AM 12/27 13 25.9
6 AM 12/27 13 25.9
12 PM 12/27 12.9 23.6
6 PM 12/27 12.9 23.6
12 AM 12/28 12.9 23.6
6 AM 12/28 12.9 23.6
12 PM 12/28 12.9 23.6
6 PM 12/28 12.9 23.6
12 AM 12/29 12.9 23.6
6 AM 12/29 12.9 23.6
12 PM 12/29 12.9 23.6
6 PM 12/29 12.9 23.6
12 AM 12/30 12.9 23.6
6 AM 12/30 12.9 23.6
TimeStage (ft)Flow (kcfs)
11:30 AM 12/16 13.44 33.1
11:00 AM 12/16 13.43 32.9
10:30 AM 12/16 13.43 32.9
10:00 AM 12/16 13.43 32.9
9:30 AM 12/16 13.43 32.9
9:00 AM 12/16 13.44 33.1
8:30 AM 12/16 13.42 32.7
8:00 AM 12/16 13.42 32.7
7:30 AM 12/16 13.41 32.5
7:00 AM 12/16 13.41 32.5
6:30 AM 12/16 13.4 32.3
6:00 AM 12/16 13.41 32.5
5:30 AM 12/16 13.4 32.3
5:00 AM 12/16 13.37 31.8
4:30 AM 12/16 13.36 31.6
4:00 AM 12/16 13.36 31.6
3:30 AM 12/16 13.35 31.5
3:00 AM 12/16 13.37 31.8
2:30 AM 12/16 13.37 31.8
2:00 AM 12/16 13.4 32.3
1:30 AM 12/16 13.39 32.2
1:00 AM 12/16 13.34 31.3
12:30 AM 12/16 13.45 33.2
12:00 AM 12/16 13.43 32.9
11:30 PM 12/15 13.45 33.2
11:00 PM 12/15 13.41 32.5
10:30 PM 12/15 13.46 33.4
10:00 PM 12/15 13.43 32.9
9:30 PM 12/15 13.43 32.9
9:00 PM 12/15 13.41 32.5
Hydrograph for Mississippi River at Clarksville Lock and Dam 24
153000' - This flow is approximately where CLKM7 goes to "open river" conditions.
38.1' - Sny Island Cell #4 levee is overtopped.
37.1' - Sny Island Cell #3 levee is overtopped.
36.25' - Highway 79 is closed from one mile south of Annada to two miles north of Annada. Route H is closed from Annada to about one mile west of Annada.
36' - Near this height, the top of the sewage treatment lagoon just south of town is overtopped.
35' - Near this height, the lock wall at Lock 24 is inundated.
34' - Route W (Kentucky Street) is closed for one block between Third Street and Highway 79. Also, near this height, the living areas of homes in the Port Marmac area begin flooding.
33' - Clarksville city businesses from 1st Street to 3rd Street begin to flood.
32.79' - IL route 96 from near Mozier to County Road 2 inundated and closed near this height.
32.5' - Near this level, the lock is closed to navigation.
32.29' - Route N is closed between Route D and Highway 79.
32' - Front Street begins to flood.
31.5' - Burlington Northern SF railroad tracks begin to flood. Also, Highway 79 is closed about a mile south of Clarksville.
31' - The Clarksville Boat Club, south of Lock & Dam 24, begins to flood. First Street begins flooding. A sand-filled barrier at the bottom of Howard Street is considered. In Hamburg, Illinois, Water Street floods.
30.8' - Near this height, Highway 79 is closed from Route N to about a mile northwest of that intersection.
30' - East bank (Illinois side) begins to flood.
29' - Water enters the parking lot entrance at the Clarksville Riverfront Park.
27.2' - Silo Park just northwest of Clarksville off Highway 79 begins flooding.
25.5' - State Route P east of Elsberry begins flooding just east of the levee.
25.3' - The road to Port Marmac, a riverside community of about 15 homes just south of Clarksville, begins flooding.
23.5' - Flooding begins in unprotected areas.
23' - At this approximate stage, the Corps will take gates out of the river, creating "open river" conditions. This corresponds to an approximate stage of 155,000 cfs.
DateStage (ft)
Jul 29, 1993 37.73
Jun 2, 2019 37.11
Apr 24, 1973 36.76
Jun 24, 2008 36.7
Apr 22, 2013 35.3
Jul 9, 2014 34.78
May 16, 2001 34.7
Oct 5, 1986 33.7
Apr 6, 1983 33.24
Oct 13, 2018 33.13
May 30, 1996 32.7
Jun 22, 1947 32.53
Apr 13, 1979 32.44
Apr 17, 1998 32.4
May 1, 1965 32.2
Apr 25, 1993 32.2
Dec 29, 2015 32.11
Apr 29, 2001 32
Apr 25, 2011 31.97
May 5, 2008 31.93

Data provided by the National Weather Service.