Allegheny River at Natrona, PA
Is Allegheny River at Natrona, PA flooding right now?
Allegheny River at Natrona, PA measured 11.49 ft on 2026-09-11 01:15:00 UTC. That observation was 9.5 ft below its 21 ft flood stage. This is the latest available reading, not a guarantee of current conditions.
Gauge height
11.49 ft
Streamflow
12,000 cfs
Minor flooding here begins at 21 ft, with major flooding at 26 ft. The highest crest on record was 32.1 ft on Wed, Mar 18, 1936.
Flood forecast
Flood stages at this gauge
| Category | Stage | Current distance |
|---|---|---|
| Action | 17.2 ft | 5.7 ft below |
| Minor flood | 21 ft | 9.5 ft below |
| Moderate flood | 24 ft | 12.5 ft below |
| Major flood | 26 ft | 14.5 ft below |
Highest crests on record
| Stage | Date |
|---|---|
| 32.1 ft | 1936-03-18 |
| 28.4 ft | 1942-12-30 |
| 27.6 ft | 1959-01-22 |
| 27.5 ft | 1972-06-23 |
| 26.4 ft | 1964-03-10 |
Nearby gauges
| Gauge | Distance | County |
|---|---|---|
| Allegheny River (lower pool) at Natrona, PA | 0.2 mi | Allegheny County |
| Allegheny River at Lock & Dam 5 near Freeport, PA | 5.5 mi | Armstrong County |
| Allegheny River below Lock & Dam 5 near Freeport, PA | 5.5 mi | Armstrong County |
| Buffalo Creek near Freeport, PA | 7.0 mi | Butler County |
| Allegheny River at CW Bill Young L&D at Acmetonia, PA | 7.4 mi | Westmoreland County |
Get a flood alert for this gauge
Free email alerts when this gauge approaches flood stage are coming soon. Leave your email and you'll be first in line.
One email when alerts launch, then only flood notifications. No spam, unsubscribe anytime.
Provisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.