RIVER GAUGE · ALLEGHENY RIVER
Allegheny River at Clinton Lock and Dam
Armstrong County, Pennsylvania
Water level10.93 ft
Flow18,800 cfs
Last readingSep 16, 2026, 5:00 PM UTC (last recorded)
Action17 ft
Minor flood21 ft
Moderate flood22 ft
Major flood24 ft
The past week
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What floods at each level
- 26.4 ft
Water reaches the bottom of the first floor window of the powerhouse at Lock 6.
- 23 ft
Top of rail of the Pennsylvania Railroad across the river from the lock floods.
- 19 ft
Lock walls overtopped.
- 17 ft
Navigation suspended, lock out of service.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| Mar 17, 1936 | 26.4 ft | — |
| Jun 22, 1972 | 22 ft | — |
| Sep 18, 2004 | 20.3 ft | 170,400 cfs |
More on Allegheny River
DownstreamAllegheny River at Freeport Lock and Dam
Allegheny River at C.W. Bill Young 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 Mosgrove 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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