Duwamish River River Levels

Last Updated: December 4, 2025

The Duwamish River is a 12-mile long river that flows through Seattle, Washington into the Puget Sound.


Summary

Maximum discharge along the river is currently at the reporting a streamflow rate of cfs. This is also the highest stage along the Duwamish River, with a gauge stage of ft at this location. This river is monitored from 1 different streamgauging stations along the Duwamish River, the highest being situated at an altitude of ft, the .

       
River Streamflow Levels
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Duwamish River At Golf Course At Tukwila
USGS 12113390
697 cfs 6.8 ft 24.24
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile

The Duwamish River is the name of the lower 12 miles (19 km) of Washington state's Green River. Its industrialized estuary is known as the Duwamish Waterway.