What is the current flow on Duwamish River?

Duwamish River was running 365 cubic feet per second as of Aug 1, 2026, 4:45 PM UTC, measured at USGS gauge 12113390. This is a build-time snapshot rather than a live reading — check the USGS gauge directly before relying on it.

What is the water temperature on Duwamish River?

68°F (20°C) as of Aug 1, 2026, 4:45 PM UTC, at USGS gauge 12113390. Duwamish River carries no state trout classification, so the trout-stress thresholds do not apply to it — this is a water temperature measurement, not a fishery judgement.

Duwamish River

Washington. Streamflow and water-temperature readings from USGS gauges. Running 365 cfs as of Aug 1, 2026, 4:45 PM UTC.

Latest Reading

365

cubic feet / second

68°F

water temperature (20°C)

USGS gauge

Flow measured Aug 1, 2026, 4:45 PM UTC at gauge 12113390. Temperature measured Aug 1, 2026, 4:45 PM UTC at gauge 12113390. These are build-time snapshots, not a live feed — check the USGS gauge before relying on them.

USGS Gauges on Duwamish River

Gauge	Station	Water temp?
12113390	DUWAMISH RIVER AT GOLF COURSE AT TUKWILA, WA	Yes

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Conditions: USGS NWIS (public domain).