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Allegheny River at Freeport Lock and Dam

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

Latest Observation

Updated: 8:30 AM EST 12/10/25

Status: No Flooding

Stage: 9.35 ft

Flow: 1.61 kcfs

Forecast

Forecast not available for this location.

TimeStage (ft)Flow (kcfs)
8:30 AM 12/10 9.35 1.61
8:15 AM 12/10 9.38 1.71
8:00 AM 12/10 9.38 1.71
7:45 AM 12/10 9.43 1.89
7:30 AM 12/10 9.4 1.78
7:15 AM 12/10 9.39 1.74
7:00 AM 12/10 9.44 1.93
6:45 AM 12/10 9.45 1.97
6:30 AM 12/10 9.44 1.93
6:15 AM 12/10 9.45 1.97
6:00 AM 12/10 9.41 1.82
5:45 AM 12/10 9.41 1.82
5:30 AM 12/10 9.45 1.97
5:15 AM 12/10 9.43 1.89
5:00 AM 12/10 9.42 1.85
4:45 AM 12/10 9.46 2.01
4:30 AM 12/10 9.44 1.93
4:15 AM 12/10 9.47 2.05
4:00 AM 12/10 9.47 2.05
3:45 AM 12/10 9.49 2.14
3:30 AM 12/10 9.48 2.1
3:15 AM 12/10 9.51 2.23
3:00 AM 12/10 9.51 2.23
2:45 AM 12/10 9.51 2.23
2:30 AM 12/10 9.53 2.32
2:15 AM 12/10 9.49 2.14
2:00 AM 12/10 9.52 2.27
1:45 AM 12/10 9.53 2.32
1:30 AM 12/10 9.52 2.27
1:15 AM 12/10 9.52 2.27
Hydrograph for Allegheny River at Freeport Lock and Dam
33.29' - Water reaches the record flood level of the ST. Patricks Day Flood and crest on March 18, 1936.
25' - Some buildings in the industrial park 1/4 mile upstream from the Lock begin to flood.
24.1' - Water reaches the level reached during Hurricane Ivan September 18, 2004. Freeport received 6 inches of rain.
22.8' - Backwater from Buffalo Creek surrounds the sewage disposal plant on Lower Market Street. Basements on First, Second and Lower High and Market Streets in town begin to flood.
20.2' - Lock walls overtopped.
16' - Navigation suspended. Lock out of service.
DateStage (ft)
Mar 18, 1936 33.3
Dec 30, 1942 25.7
Mar 10, 1964 25.3
Jan 20, 1996 25
Jan 22, 1959 24.8
Jun 23, 1972 24.5
Sep 18, 2004 24.1
Mar 16, 2007 23.6
Mar 5, 1964 23.3
Feb 14, 1966 22.7
Feb 19, 2022 22.58
Apr 13, 2024 22.52
Dec 31, 1990 22.5
Jun 21, 1989 22.2
Jan 29, 2024 19.54
Mar 23, 2007 18.5

Data provided by the National Weather Service.