The Whitewater River Run in Washington State is an exciting adventure for whitewater enthusiasts. The ideal streamflow range for this river is between 1000 and 3000 cubic feet per second (cfs), which provides Class II-IV rapids. The segment mileage of the Whitewater River Run is approximately 15 miles, starting from the headwaters and including all tributaries to the confluence with the North Fork Skokomish River.

The river offers a range of rapids and obstacles, including Class II rapids with tight turns and small waves, Class III rapids with large waves and strong currents, and Class IV rapids with steep drops and powerful hydraulics. Some of the notable rapids on the river include the Pinball Rapid, the Corkscrew Rapid, and the Washing Machine Rapid.

To protect the natural habitat and maintain safety, there are specific regulations in place for the Whitewater River Run. All boaters are required to have a valid permit to access the river, and camping is not allowed along the riverbanks. In addition, all boaters must follow Leave No Trace principles and pack out all trash and waste.

Overall, the Whitewater River Run is a challenging and exciting adventure for experienced whitewater enthusiasts. It is important to follow all regulations and safety precautions to ensure a safe and enjoyable experience.