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Mississippi River below Lock and Dam 8 - Genoa

Critical Stages
625.2' - Action
631' - Flood
634' - Moderate
636' - Major

Latest Observation

Updated: 10:15 PM CST 12/14/25

Status: No Flooding

Stage: 621.44 ft

Flow: 22.1 kcfs

Forecast

Forecast not available for this location.

TimeStage (ft)Flow (kcfs)
10:15 PM 12/14 621.44 22.1
10:00 PM 12/14 621.44 22.1
9:45 PM 12/14 621.44 22.1
9:30 PM 12/14 621.43 22
9:15 PM 12/14 621.44 22.1
9:00 PM 12/14 621.43 22
8:45 PM 12/14 621.43 22
8:30 PM 12/14 621.43 22
8:15 PM 12/14 621.43 22
8:00 PM 12/14 621.43 22
7:45 PM 12/14 621.42 21.9
7:30 PM 12/14 621.43 22
7:15 PM 12/14 621.42 21.9
7:00 PM 12/14 621.43 22
6:45 PM 12/14 621.43 22
6:30 PM 12/14 621.43 22
6:15 PM 12/14 621.44 22.1
6:00 PM 12/14 621.43 22
5:45 PM 12/14 621.43 22
5:30 PM 12/14 621.42 21.9
5:15 PM 12/14 621.43 22
5:00 PM 12/14 621.43 22
4:45 PM 12/14 621.42 21.9
4:30 PM 12/14 621.42 21.9
4:15 PM 12/14 621.42 21.9
4:00 PM 12/14 621.42 21.9
3:45 PM 12/14 621.42 21.9
3:30 PM 12/14 621.42 21.9
3:15 PM 12/14 621.42 21.9
3:00 PM 12/14 621.42 21.9
Hydrograph for Mississippi River below Lock and Dam 8 - Genoa
639.5' - Water begins to go over the protective earthen dikes.
639' - Water begins to flow over the lock walls at Dam 8.
638.4' - Water levels reach the flood of record.
636' - Lock and dam 8 is closed to navigation.
631.5' - Blackhawk Park south of Genoa is flooded.
625.2' - Army Road likely closes near Albin, Iowa impacting the public access.
DateStage (ft)
Apr 22, 1965 638.4
Apr 12, 1997 636.45
Apr 18, 2001 636.21
Apr 27, 2023 635.72
Apr 20, 1969 635.24
Apr 20, 1952 634.52
Jul 5, 2024 634.2
Jun 26, 1993 633.94
Apr 20, 1951 633.9
May 3, 1975 633.86
Apr 4, 2019 633.84
Apr 16, 2011 633.5
Apr 7, 1967 633.35
Apr 9, 1986 633.1
May 9, 1954 632.7
Sep 28, 2010 632.4
Mar 21, 1973 632.05
May 25, 2019 631.97
Apr 26, 1996 631.96
Mar 14, 1983 631.82

Data provided by the National Weather Service.