* WHAT...Heavy snow expected. Total snow accumulations between 5 and 8 inches with locally up to 12 inches next to the foothills. * WHERE...Fort Collins, Boulder, Denver metro area, and Castle Rock. * WHEN...From 8 PM this evening to 3 PM MDT Wednesday. * IMPACTS...Heavy snow accumulating on trees may result in broken tree limbs, downed powerlines, and scattered power outages. Despite lesser accumulations on roadways, slick and hazardous conditions are still possible for the Wednesday morning commute.
Total streamflow across the
Allegheny River
was last observed at
124,181
cfs, and is expected to yield approximately
246,310
acre-ft of water today; about 97%
of normal.
Average streamflow for this time of year is
128,359 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 29,800 cfs.
This is also the highest stage along the Allegheny River, with a gauge stage of
13.22 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.
The Allegheny River spans over 325 miles and originates in Potter County, Pennsylvania.
| Last Updated | 2026-05-05 |
| Discharge Volume | 246,310 ACRE-FT |
| Streamflow |
124,181.0 cfs
Past 24 Hours: -23551.0 cfs (-15.94%) |
| Percent of Normal | 96.75% |
| Maximum |
398,200.0 cfs
2022-02-24 |
| Seasonal Avg | 128,359 cfs |
| Streamgauge | Streamflow | Gauge Stage | 24hr Change (%) | % Normal | Minimum (cfs) | Maximum (cfs) | Air Temp | Elevation |
|---|---|---|---|---|---|---|---|---|
|
Allegheny River At Port Allegany
USGS 03007800 |
591 cfs | 4.26 ft | -4.98 | |||||
|
Allegheny River At Eldred
USGS 03010500 |
1430 cfs | 6.42 ft | -10.06 | |||||
|
Allegheny River At Salamanca Ny
USGS 03011020 |
4380 cfs | 5.07 ft | -13.78 | |||||
|
Allegheny River At Kinzua Dam
USGS 03012550 |
7170 cfs | 10.32 ft | 0 | |||||
|
Allegheny River Bl Conewango Creek At Warren
USGS 03015310 |
8910 cfs | 5.78 ft | -5.91 | |||||
|
Allegheny River At West Hickory
USGS 03016000 |
10500 cfs | 5.98 ft | -6.25 | |||||
|
Allegheny River At Franklin
USGS 03025500 |
16300 cfs | 6.69 ft | -15.54 | |||||
|
Allegheny River At Parker
USGS 03031500 |
20700 cfs | 6.31 ft | -22.47 | |||||
|
Allegheny River At Kittanning
USGS 03036500 |
24400 cfs | 12.73 ft | -19.47 | |||||
|
Allegheny River At Natrona
USGS 03049500 |
29800 cfs | 13.22 ft | -17.91 |
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.