About this river
Allegheny River is a 29.5 mile river near RiverRiders Rentals in Pennsylvania. Streamflow is measured at the USGS gauge Allegheny River at Parker, PA (site 03031500). The National Hydrography Dataset places it at stream order 8. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1933 to 2026
Allegheny River typically runs highest in April, at a median 22,950 cfs, and lowest in August, at 3,510 cfs. The highest flow on record for any single day is 160,000 cfs, in 1959.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 13,700 | 7,260 to 24,900 | |
| February | 12,600 | 7,050 to 22,200 | |
| March | 21,100 | 14,100 to 32,800 | |
| April | 22,950 | 14,400 to 31,850 | |
| May | 12,900 | 8,150 to 21,400 | |
| June | 6,250 | 4,120 to 12,100 | |
| July | 4,150 | 2,920 to 7,030 | |
| August | 3,510 | 2,470 to 5,250 | |
| September | 3,570 | 2,100 to 5,380 | |
| October | 4,240 | 2,710 to 7,540 | |
| November | 9,485 | 5,485 to 17,000 | |
| December | 15,700 | 9,210 to 24,300 |
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 93 years of record. Statistics published by the US Geological Survey for Allegheny River at Parker, PA (site 03031500). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
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.
See every free widget you can put on your site, including live conditions and a 7 day forecast.
