SNOFLO
 



ALLEGHENY RIVER

RIVER LEVELS
March 31, 2025


Total streamflow across the Allegheny River was last observed at 57,607 cfs, and is expected to yield approximately 114,262 acre-ft of water today; about 52% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 109,986 cfs, with recent peaks last observed on 2022-02-24 when daily discharge volume was observed at 398,200 cfs.

Maximum discharge along the river is currently at the Allegheny River At Natrona reporting a streamflow rate of 12,600 cfs. This is also the highest stage along the Allegheny River, with a gauge stage of 11.56 ft at this location. This river is monitored from 10 different streamgauging stations along the Allegheny River, the highest being situated at an altitude of 1,457 ft, the Allegheny River At Port Allegany.

Last Updated 2025-03-31
Discharge Volume 114,262 ACRE-FT
Streamflow 57,607.0 cfs
-3324.0 cfs (-5.46%)
Percent of Normal 52.38%
Maximum 398,200.0 cfs
2022-02-24
Seasonal Avg 109,986 cfs
       



       
River Streamflow Levels
Created with Highcharts 8.0.0Total River Discharge (cfs)22. Mar23. Mar24. Mar25. Mar26. Mar27. Mar28. Mar29. Mar30. Mar31. Mar050k100k150k
Seasonal Discharge Comparison
Created with Highcharts 8.0.0Total River Discharge (cfs)1. Jan1. Feb1. Mar1. Apr1. May1. Jun1. Jul1. Aug1. Sep1. Oct1. Nov1. Dec1. Jan0200k400k600k
Maximum Streamflow Discharge
Created with Highcharts 8.0.0YearAnnual Peak Discharge(cfs)20102011201220132014201520162017201820192020202120222023202420252026200k400k600k

Weather Forecast

Streamflow Elevation Profile
Created with Highcharts 8.0.0

The Allegheny River ( AL-ə-GAY-nee) is a 325-mile (523 km) long headwater stream of the Ohio River in western Pennsylvania and New York, United States. The Allegheny River runs from its headwaters just below the middle of Pennsylvania's northern border northwesterly into New York then in a zigzag southwesterly across the border and through Western Pennsylvania to join the Monongahela River at the Forks of the Ohio on the "Point" of Point State Park in Downtown Pittsburgh, Pennsylvania. The Allegheny River is, by volume, the main headstream of both the Ohio and Mississippi Rivers. Historically, the Allegheny was considered to be the upper Ohio River by both Native Americans and European settlers.
The shallow river has been made navigable upstream from Pittsburgh to East Brady by a series of locks and dams constructed in the early 20th century. A 24-mile long portion of the upper river in Warren and McKean counties of Pennsylvania and Cattaraugus County in New York is the Allegheny Reservoir also known as Lake Kinzua, created by the erection of the Kinzua Dam in 1965 for flood control.
The name of the river comes from one of a number of Delaware Indian phrases which are homophones of the English name, with varying translations.