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Allegheny Portage Creek in Pennsylvania

Stream10.9 mi
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Around Allegheny Portage Creek

2 mi

Data Source: Recreation.gov · Public land: USGS PAD-US

About this river

Allegheny Portage Creek is a 10.9 mile stream. Streamflow is measured at the USGS gauge Allegheny River at Port Allegany, PA (site 03007800). The National Hydrography Dataset places it at stream order 4. Reach geometry comes from the USGS National Hydrography Dataset.

Typical flow by month

1975 to 2026

Allegheny Portage Creek typically runs highest in April, at a median 648 cfs, and lowest in September, at 69 cfs. The highest flow on record for any single day is 9,320 cfs, in 2011.

Show the numbers
Typical flow by month at Allegheny River at Port Allegany, PA, in cfs
MonthTypical (cfs)Usual range (cfs)
January300174 to 613
February256141 to 539
March622372 to 986
April648412 to 1,075
May338222 to 658
June17296 to 339
July10763 to 209
August8143 to 181
September6933 to 152
October11852 to 300
November305161 to 581
December442263 to 674

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 52 years of record. Statistics published by the US Geological Survey for Allegheny River at Port Allegany, PA (site 03007800). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.

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