The Whitewater River run from Headwaters (Sec 5, T32N, R10E) to Selway-Bitterroot Wilderness Boundary in Idaho is an advanced level run with a class rating of IV-V. The ideal streamflow range for this run ranges from 1,200-2,000 cfs. This 20-mile segment of the river contains numerous rapids and obstacles such as House Rock, Big Rock, and Widowmaker. The rapids on this run are technical with steep drops, narrow chutes, and large boulders. It is recommended that only experienced whitewater paddlers attempt this run.

The specific regulations for this area require a permit to access the Selway-Bitterroot Wilderness Boundary. This permit can be obtained from the Selway-Bitterroot Wilderness ranger station. Additionally, all boaters are required to follow Leave No Trace principles, carry a portable toilet, and pack out all trash.