Satsop River River Levels

Last Updated: December 4, 2025

The Satsop River is a 45-mile long tributary of the Chehalis River in Washington State, USA.


Summary

Maximum discharge along the river is currently at the reporting a streamflow rate of cfs. This is also the highest stage along the Satsop River, with a gauge stage of ft at this location. This river is monitored from 1 different streamgauging stations along the Satsop 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
Satsop River Near Satsop
USGS 12035000
1140 cfs 29.58 ft -22.97
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile

The Satsop River is a stream in the U.S. state of Washington. It has three main tributary forks, the East Fork, West Fork, and Middle Fork Satsop Rivers. The main stem Satsop River is formed by the confluence of the West and East Forks. The Middle Fork is a tributary of the East Fork. The three forks are much longer than the main stem Satsop itself, which flows south from the confluence only a few miles to join the Chehalis River near Satsop, Washington. Other significant tributaries include the Canyon River and Little River, both tributaries of the West Fork Satsop, and Decker Creek, a tributary of the East Fork Satsop River. The Satsop River's major tributaries originate in the Olympic Mountains and its southern foothills, the Satsop Hills, within Grays Harbor and Mason counties. Most of the Satsop River's watershed consists of heavily wooded hill lands. The upper tributaries extend into Olympic National Forest, approaching but not quite reaching Olympic National Park.
The Satsop River watershed is located east of the Wynoochee River and south of the Skokomish River watersheds.