The Whitewater River Run in Washington State is a popular destination for whitewater enthusiasts. The ideal streamflow range for this river is between 800 and 2,500 cubic feet per second (cfs), which typically occurs during the spring and early summer months. The run is classified as Class III-IV, meaning it is a technical and challenging run with moderate to high waves and rapids.

The segment of the river that is commonly run by whitewater kayakers and rafters is approximately 10 miles long, running from the headwaters at Station Creek to the confluence with the Dosewallips River. The run includes several notable rapids and obstacles, including "The Notch," "The Chute," and "The Slot."

There are specific regulations that apply to the Whitewater River Run, including a requirement for all boaters to have a valid Washington State Boater Education Card. Additionally, there is a prohibition on the use of motorized watercraft on the river.