Winter Storm Warning
2026-05-06T15:00:00-06:00

* 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.

Clarion River

Last Updated: May 5, 2026

Total streamflow across the Clarion River was last observed at 5,647 cfs, and is expected to yield approximately 11,201 acre-ft of water today; about 89% of normal. Average streamflow for this time of year is 6,315 cfs, with recent peaks last observed on 2014-05-22 when daily discharge volume was observed at 76,850 cfs.

Maximum discharge along the river is currently at the Clarion River Near Piney reporting a streamflow rate of 2,130 cfs. This is also the highest stage along the Clarion River, with a gauge stage of 5 ft at this location. This river is monitored from 4 different streamgauging stations along the Clarion River, the highest being situated at an altitude of 1,426 ft, the Clarion River At Johnsonburg.

The Clarion River is a 110-mile-long river located in western Pennsylvania, United States.


15-Day Long Term Forecast


River Details

Last Updated 2026-05-05
Discharge Volume 11,201 ACRE-FT
Streamflow 5,647.0 cfs
Past 24 Hours: -59.0 cfs (-1.03%)
Percent of Normal 89.42%
Maximum 76,850.0 cfs
2014-05-22
Seasonal Avg 6,315 cfs
       
River Streamflow Levels
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Clarion River At Johnsonburg
USGS 03028500
562 cfs 2.94 ft 21.65
Clarion River At Ridgway
USGS 03029000
915 cfs 4.51 ft 7.14
Clarion River At Cooksburg
USGS 03029500
2040 cfs 4.6 ft -10.13
Clarion River Near Piney
USGS 03030500
2130 cfs 5 ft 0.47
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile

The Clarion River is a tributary of the Allegheny River, approximately 110 mi (177 km) long, in west central Pennsylvania in the United States. It drains a rugged area of the Allegheny Plateau in the Ohio River watershed, flowing through narrow serpentine valleys and hardwood forests.