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SwedenAllegheny River at Natrona water level
River gauge, Allegheny River, Pennsylvania, United States
Right now
Below flood stage
Water level
- Flow
- 12,600 cfs
History
The forecast expects the river to fall to 11.10 ft by Wednesday, October 21 at 02:00 AM. Issued Sunday, October 18 at 08:53 AM by NOAA National Weather Service.
What this means
The Allegheny River at Natrona is at 11.56 ft, in the normal range.
It is 9.44 ft below the flood stage of 21.00 ft.
It has dropped 0.07 ft over the past 24 hours. The forecast expects the river to fall to 11.10 ft by Wednesday, October 21 at 02:00 AM. In the last month it has stayed between 11.15 ft and 11.68 ft.
Judged against the official flood stage for this gauge. How to read levels
Key numbers
- Highest on record
- 32.10 ftMarch 18, 1936
- Forecast peak
- 11.60 ftSunday, October 18 at 02:00 PM
Floating and fishing near Allegheny River at Natrona
Normal flows mean predictable rapids and good access at most put-ins.
Flood stage here is 21.00 ft, 9.44 ft above the current reading. Beyond it, the National Weather Service also defines moderate and major flood stages.
What happens at each level
- 29.40 ft
- Pennsylvania Railroad main line and sidings affected at Tarentum PA, 3 miles downstream floods.
- 21.50 ft
- The Natrona Water Company is affected.
- 21.30 ft
- Water begins to back up into the sewers at Braeburn Steel Co.
- 21.00 ft
- Lock walls overtopped.
- 18.00 ft
- Navigation suspended, lock out of service.
- 11.56 ft
- Right now
Impact statements from the U.S. National Weather Service.
Highest crests on record
Chance of at least minor flooding in October to December: < 5 %.
| Rank | Level | Date |
|---|---|---|
| 1 | 32.10 ft | March 18, 1936 |
| 2 | 28.40 ft | December 30, 1942 |
| 3 | 27.60 ft | January 22, 1959 |
| 4 | 27.50 ft | June 23, 1972 |
| 5 | 26.40 ft | March 10, 1964 |
| 6 | 24.20 ft | September 18, 2004 |
| 7 | 23.10 ft | January 20, 1996 |
| 8 | 22.10 ft | February 14, 1966 |
| 9 | 21.80 ft | February 17, 1976 |
| 10 | 21.40 ft | March 16, 2007 |
Weather at the gauge
The forecast is not available right now.
Map
Other gauges on the Allegheny River
| Gauge | Level | Compared with normal | 24 hours | Distance |
|---|---|---|---|---|
| Allegheny River at Kinzua DamRiver gauge, Allegheny River | 2,310 cfs | Normal | −20.0 cfs | 92 mi |
| Allegheny River below Conewango Creek at WarrenRiver gauge, Allegheny River | 3.23 ft | Below flood stage | +0.03 ft | 90 mi |
| Allegheny River at West HickoryRiver gauge, Allegheny River | 3.91 ft | Below flood stage | +0.01 ft | 68 mi |
| Allegheny River at FranklinRiver gauge, Allegheny River | 3.50 ft | Below flood stage | +0.01 ft | 54 mi |
| Allegheny River at ParkerRiver gauge, Allegheny River | 2.56 ft | Below flood stage | +0.01 ft | 34 mi |
| Allegheny River near RimerRiver gauge, Allegheny River | 9.36 ft | Normal | +0.01 ft | 25 mi |
| Allegheny River at Lock & Dam 8 near TempletonRiver gauge, Allegheny River | 9.55 ft | Normal | +0.04 ft | 23 mi |
| Allegheny River at KittanningRiver gauge, Allegheny River | 10.62 ft | Below flood stage | +0.05 ft | 17 mi |
| Allegheny River at Lock & Dam 6 at ClintonRiver gauge, Allegheny River | 9.71 ft | Normal | +0.02 ft | 10 mi |
| Allegheny River below Lock & Dam 6 at ClintonRiver gauge, Allegheny River | 9.71 ft | Low | +0.01 ft | 10 mi |
| Allegheny River at Lock & Dam 5 near FreeportRiver gauge, Allegheny River | 9.79 ft | Low | +0.07 ft | 5.5 mi |
| Allegheny River below Lock & Dam 5 near FreeportRiver gauge, Allegheny River | 11.61 ft | Normal | −0.06 ft | 5.5 mi |
Nearby gauges
| Gauge | Level | Compared with normal | 24 hours | Distance |
|---|---|---|---|---|
| Allegheny River (lower pool) at NatronaRiver gauge, Allegheny River (lower pool) | 11.26 ft | Normal | −0.14 ft | 0.2 mi |
| Allegheny R at CW Bill Young L&D at AcmetoniaRiver gauge, Allegheny R | 11.06 ft | Normal | −0.07 ft | 7 mi |
| Buffalo Creek at Iron BridgeRiver gauge, Buffalo Creek | 133 cfs | High | −72.0 cfs | 9 mi |
| Kiskiminetas River at VandergriftRiver gauge, Kiskiminetas River | 7.20 ft | Below flood stage | −0.28 ft | 9 mi |
| Crooked Creek Lake near Ford CityLake, Crooked Creek Lake | 845.35 ft | Very high | ±0 | 13 mi |
| Crooked Creek at Crooked Creek Dam near Ford CityRiver gauge, Crooked Creek | 3.24 ft | Below flood stage | ±0 | 13 mi |
Questions and answers
What is flood stage for the Allegheny River at Natrona?
The official flood stage is 21.00 ft. The level is currently 9.44 ft below it.
Is gage height the same as water depth?
No. Gage height is measured from a fixed reference point chosen by the agency, so a reading of 10 ft does not mean the river is 10 ft deep.
What is the water level of Allegheny River at Natrona today?
On Oct 18, 2026, 02:15 PM EDT, the water level was 11.56 ft. Down 0.07 ft over the last 24 hours.
Is Allegheny River at Natrona rising or falling?
Down 0.07 ft over the last 24 hours.
Is the level of Allegheny River at Natrona normal?
Below flood stage. Judged against the official flood stage for this gauge.
What is the highest water level ever recorded at Allegheny River at Natrona?
The highest level on record is 32.10 ft on March 18, 1936.
Is Allegheny River at Natrona expected to rise?
The forecast expects the river to fall to 11.10 ft by Wednesday, October 21 at 02:00 AM.
For specialists
Station codes, datum, parameters, data quality and downloads
- Operator
- U.S. Geological Survey
- Station code
usgs:03049500(Agency page)- Coordinates
40.61530, -79.71837(WGS84)- Vertical datum
- NAVD88
- Update interval
- every 15 minutes
- Licence
- Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision
Published series
| Parameter | Last value | Time (UTC) | Quality |
|---|---|---|---|
| Water level | 11.56 ft | 2026-10-18 18:15 | Provisional |
| Flow | 12,600 cfs | 2026-10-18 18:15 | Provisional |
Download
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How to cite
U.S. Geological Survey: Allegheny River at Natrona (usgs:03049500). Accessed October 18, 2026 via Nivelmap, https://nivelmap.com/en/united-states/pennsylvania/allegheny-river-at-natrona
How we check values
Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.
Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer