Allegheny River in Pennsylvania
Around here
Around Allegheny River
Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US
About this river
Allegheny River is a 62.1 mile river. Streamflow is measured at the USGS gauge Allegheny River at Natrona, PA (site 03049500). The National Hydrography Dataset places it at stream order 8. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1939 to 2026
Allegheny River typically runs highest in March, at a median 31,800 cfs, and lowest in September, at 4,590 cfs. The highest flow on record for any single day is 206,000 cfs, in 1943.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 19,900 | 10,600 to 35,700 |
| February | 19,700 | 11,400 to 33,900 |
| March | 31,800 | 21,400 to 48,500 |
| April | 30,750 | 20,900 to 46,050 |
| May | 19,200 | 11,500 to 31,500 |
| June | 9,760 | 6,290 to 19,100 |
| July | 6,140 | 4,080 to 10,600 |
| August | 4,940 | 3,340 to 7,910 |
| September | 4,590 | 3,015 to 8,345 |
| October | 5,920 | 3,710 to 11,700 |
| November | 12,700 | 7,060 to 22,650 |
| December | 21,700 | 12,800 to 34,100 |
Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 87 years of record. Statistics published by the US Geological Survey for Allegheny River at Natrona, PA (site 03049500). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
8 mapped launches sit in the mapped area of Allegheny River. Ramp data comes from the USGS national boat-ramp inventory.
- Heinz QuayOhio RiverPublic
- 19th Street SharpsburgAllegheny RiverRestricted
- Sharpsburg Island MarinaAllegheny RiverPublic
- Deer CreekAllegheny RiverPublic
- SpringdaleAllegheny RiverPublic
- Cheswick MarinaAllegheny RiverRestricted
- Logan's Ferry MarinaAllegheny RiverRestricted
- Lighthouse Marine Sales, Inc.Allegheny RiverPublic
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Allegheny River's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
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