What is the current flow on Casselman River?

Casselman River was running 103 cubic feet per second as of Aug 1, 2026, 5:30 PM UTC, measured at USGS gauge 03079000. This is a build-time snapshot rather than a live reading — check the USGS gauge directly before relying on it.

Is Casselman River stocked?

Yes — Casselman River is on the state's stocked trout water list. Stocked water is managed as put-and-take: fish are raised in a hatchery and released, rather than reproducing in the stream. Source: PA Fish & Boat Commission (PASDA).

Casselman River

Q: What is the water temperature on Casselman River?

75.4°F (24.1°C) as of Aug 1, 2026, 5:30 PM UTC, at USGS gauge 03079000. Trout come under thermal stress above about 68°F, and Montana FWP restricts angling when max daily water temperature reaches 73F for 3 consecutive days. This reading is at or above the 68°F stress threshold — many anglers stop fishing and conservation groups ask that trout not be played in warm water.

Somerset County, Pennsylvania. A state-stocked trout water. Running 103 cfs as of Aug 1, 2026, 5:30 PM UTC.

Latest Reading

103

cubic feet / second

75.4°F

water temperature (24.1°C)

USGS gauge

Flow measured Aug 1, 2026, 5:30 PM UTC at gauge 03079000. Temperature measured Aug 1, 2026, 5:30 PM UTC at gauge 03079000. These are build-time snapshots, not a live feed — check the USGS gauge before relying on them.

This water was above the trout-stress threshold

Casselman River read 75.4°F as of Aug 1, 2026, 5:30 PM UTC. Trout come under thermal stress above roughly 68°F, and mortality after catch-and-release rises sharply in warm water. Montana FWP restricts angling when max daily water temperature reaches 73F for 3 consecutive days.

At or above that threshold many anglers stop fishing for the day, fish early morning only, or move to colder water. We are reporting a measurement, not issuing an advisory — check your state agency for any restriction actually in force.

State Trout Classification

Classification	Stocked Trout Water
County	Somerset

Source: PA Fish & Boat Commission (PASDA).

USGS Gauges on Casselman River

Gauge	Station	Water temp?
03079000	Casselman River at Markleton, PA	Yes

Fly fishing rivers →Pennsylvania trout water →Pennsylvania lakes →

Conditions: USGS NWIS (public domain). Classification: PA Fish & Boat Commission (PASDA).