Streamflow discharge was last observed at 55 cfs, and a gauge height of 306.25 feet.
With the
% decrease since yesterday,
the streamflow average over the past 10 days is 57 .
Weather today, Tomorrow,
The flow providers/constituents include rainfall, snowmelt, and groundwater. There are several tributaries which feed into the Chehalis River, including the Newaukum River and Skookumchuck River. There are also several dams located along the river, including the Centralia Dam and the Chehalis Dam. Seasonal trends show that the river experiences high flows during the winter and spring months due to increased precipitation and snowmelt. Interesting facts about the Chehalis River include that it is the largest tributary of Grays Harbor and is known for its diverse fish populations, including salmon and steelhead.
| Elevation | 324.0 ft |
| Last Updated | |
| Gage height, ft | 306.25 ft |
| Streamflow, ft³/s | 54.6 ft3/s |
| Percent of Normal | 133% |
| Year Over Year Average | 41 cfs |
| 24hr Flow Prediction | cfs |
| Maximum Recorded | 17,800 cfs |