The Whitewater River Run located in the state of Washington is a popular destination for whitewater enthusiasts. The ideal streamflow range for this river is between 800 and 3000 cubic feet per second (cfs). The class rating for this section of the river is generally considered to be class III, with a few class IV rapids. The segment mileage for this run is approximately 6 miles, from USFS Road 2870 Bridge to the confluence with the Dungeness River.

The Whitewater River has several exciting rapids, including Kibbles and Bits, Rock Drop, and Couch Potato. Kibbles and Bits is a class III+ rapid, and it requires careful maneuvering around large boulders and through narrow channels. Rock Drop is a class IV rapid that features a steep drop over a large rock. Couch Potato is a class III rapid that requires precise navigation around a series of boulders.

There are specific regulations in place for the Whitewater River Run. The area is located on federal land managed by the Olympic National Forest, and a Northwest Forest Pass is required for parking. Additionally, all boaters must have a personal flotation device (PFD) and a whistle. Alcohol and drugs are prohibited, and there are restrictions on camping and fires in the area.

In conclusion, the Whitewater River Run is a thrilling and challenging destination for whitewater enthusiasts in Washington. With an ideal streamflow range of 800-3000 cfs, a class III rating, exciting rapids, and specific regulations in place, it is a must-visit for experienced boaters looking for a new challenge.