What is the current flow on Cowlitz River?

Cowlitz River was running 3,500 cubic feet per second as of Aug 1, 2026, 6:30 PM UTC, measured at USGS gauge 14243000. This is a build-time snapshot rather than a live reading — check the USGS gauge directly before relying on it.

Is Cowlitz River stocked?

Yes — Cowlitz 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: undefined.

Cowlitz River

Washington. A state-stocked trout water. Running 3,500 cfs as of Aug 1, 2026, 6:30 PM UTC.

Latest Reading

3,500

cubic feet / second

USGS gauges

Flow measured Aug 1, 2026, 6:30 PM UTC at gauge 14243000. These are build-time snapshots, not a live feed — check the USGS gauge before relying on them.

State Trout Classification

Classification

State-stocked trout water

Source: .

USGS Gauges on Cowlitz River

Gauge	Station	Water temp?
14226500	COWLITZ RIVER AT PACKWOOD, WA	—
14231000	COWLITZ RIVER AT RANDLE, WA	—
14233500	COWLITZ RIVER NEAR KOSMOS, WA	—
14238000	COWLITZ RIVER BELOW MAYFIELD DAM, WA	—
14243000	COWLITZ RIVER AT CASTLE ROCK, WA	—

Fly fishing rivers →Washington trout water →Washington lakes →

Conditions: USGS NWIS (public domain).