RIVER GAUGE · ALLEGHENY RIVER
Allegheny River at C.W. Bill Young Lock and Dam
Allegheny County, Pennsylvania
Water level11.92 ft
Flow23,900 cfs
Last readingSep 16, 2026, 4:45 PM UTC (last recorded)
Action15 ft
Minor flood17 ft
Moderate flood20 ft
Major flood23 ft
The past week
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What floods at each level
- 22.7 ft
State Route 366 is flooded.
- 20 ft
Lock walls overtopped.
- 19 ft
Lock 3 ceases operations for navigation.
- 18 ft
Navigation suspended, lock out of service.
- 17.7 ft
Basement flooding begins in New Kensington.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| Mar 17, 1936 | 31.1 ft | — |
| Dec 29, 1942 | 23.3 ft | — |
| Mar 9, 1964 | 21.4 ft | — |
More on Allegheny River
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 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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