RIVER GAUGE · ALLEGHENY RIVER
Allegheny River at Mosgrove Lock and Dam
Armstrong County, Pennsylvania
Water level11.49 ft
Flow15,100 cfs
Last readingSep 16, 2026, 3:45 PM UTC (last recorded)
Action14 ft
Minor flood19 ft
Moderate flood21 ft
Major flood24 ft
The past week
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What floods at each level
- 20 ft
Water begins to rise on to the road along the river in Templeton PA.
- 15.8 ft
Lock walls are overtopped.
- 14 ft
Navigation suspended. Lock out of service.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| Mar 9, 1964 | 27.7 ft | — |
| Mar 4, 1964 | 25.6 ft | — |
| Dec 29, 1942 | 21.8 ft | — |
More on Allegheny River
Allegheny River at C.W. Bill Young Lock and Dam
Allegheny River at Clinton Lock and Dam
Allegheny River at Eldred
Allegheny River at Freeport Lock and Dam
Allegheny River at Franklin
Allegheny River at Kittanning Lock and Dam
Allegheny River at Natrona Lock and Dam
Allegheny River at Parker
Allegheny River at Rimer Lock and Dam
Allegheny River at Sharpsburg Lock and Dam
Get an alert when Allegheny River rises
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