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Monongahela River at Maxwell Lock and Dam (lower pool)

Critical Stages
23.5' - Action
32' - Flood
34' - Moderate
36' - Major

Latest Observation

Updated: 1:30 AM EST 12/16/25

Status: No Flooding

Stage: 10.84 ft

Flow: 11.9 kcfs

Forecast

TimeStage (ft)Flow (kcfs)
7 AM 12/16 10 5.07
1 PM 12/16 10 5.07
7 PM 12/16 10 5.07
1 AM 12/17 10 5.07
7 AM 12/17 10 5.07
1 PM 12/17 10 5.07
7 PM 12/17 10 5.07
1 AM 12/18 10 5.07
7 AM 12/18 10 5.07
1 PM 12/18 10 5.07
7 PM 12/18 10.1 5.93
1 AM 12/19 10.1 5.93
7 AM 12/19 10.1 5.93
1 PM 12/19 10.2 6.66
7 PM 12/19 10.2 6.66
1 AM 12/20 10.2 6.66
7 AM 12/20 10.2 6.66
TimeStage (ft)Flow (kcfs)
2:30 AM 12/16 10.73 10.9
2:15 AM 12/16 10.76 11.2
2:00 AM 12/16 10.79 11.4
1:45 AM 12/16 10.85 12
1:30 AM 12/16 10.84 11.9
1:15 AM 12/16 10.79 11.4
1:00 AM 12/16 10.78 11.4
12:45 AM 12/16 10.73 10.9
12:30 AM 12/16 10.86 12
12:15 AM 12/16 10.6 9.84
12:00 AM 12/16 10.59 9.76
11:45 PM 12/15 10.59 9.76
11:30 PM 12/15 10.58 9.68
11:15 PM 12/15 10.9 12.4
11:00 PM 12/15 10.82 11.7
10:45 PM 12/15 10.69 10.6
10:30 PM 12/15 10.72 10.8
10:15 PM 12/15 10.48 8.88
10:00 PM 12/15 10.77 11.3
9:45 PM 12/15 10.67 10.4
9:30 PM 12/15 10.63 10.1
9:15 PM 12/15 10.56 9.53
9:00 PM 12/15 10.51 9.13
8:45 PM 12/15 10.56 9.53
8:30 PM 12/15 10.4 8.25
8:15 PM 12/15 10.41 8.33
8:00 PM 12/15 10.42 8.41
7:45 PM 12/15 10.38 8.09
7:30 PM 12/15 10.64 10.2
7:15 PM 12/15 10.42 8.41
Hydrograph for Monongahela River at Maxwell Lock and Dam (lower pool)
40.5' - Flooding begins on the lower side of Main Street in Brownsville
35' - Homes flood on Middle Street, Liberty Street, Water Street, Broadway Street, River Street, and Axton Street in West Brownsville.
33.5' - Lock walls overtopped.
33.32' - Water levels reach the flood levels of the flood of July 30, 2017.
32' - Low lying areas of West Brownsville begin to flood.
31' - Navigation suspended, lock out of service.
28' - Middle Street and Liberty Street in West Brownsville are closed due to storm drain system backups, and several homes have basement flooding.
27' - Brownsville Road at Albany Tunnel (near Assad Iron and Metal) in Fayette County is closed due to high water.
DateStage (ft)
Nov 5, 1985 44.4
Mar 7, 1967 38.2
Mar 5, 1963 38
Jan 20, 1996 37.8
Feb 19, 2000 36.5
Mar 20, 1963 35.4
Jul 30, 2017 33.32
Jun 24, 1972 32.6
May 25, 1968 32.5
Feb 10, 1994 32.3
Nov 20, 2003 31.4
Jan 26, 1978 31.3
Jun 11, 1974 31.2
Mar 5, 2015 30.89
Feb 17, 2018 30.81
Feb 14, 1966 30.1
Jan 29, 1994 29.6
Dec 9, 1978 29.5
Aug 19, 1980 29.4
Dec 14, 2007 29.4

Data provided by the National Weather Service.