The Whitewater River Run in Boise National Forest is an exciting adventure for experienced whitewater enthusiasts. The ideal streamflow range is between 1,500 to 3,000 cfs, making it best to visit during the late spring and early summer months. The segment mileage is approximately 20 miles long, consisting of class III and IV rapids. Specific river rapids that stand out include Bladder Buster, Lower and Upper Deadwood, and Hazard Falls. Obstacles include rocks, boulders, and steep drops.

It is important to note that the run is rated as a class IV for the majority of the route, with a class III section towards the end. Due to its difficulty, only experienced paddlers should attempt the run. In terms of regulations, all boaters must have a valid permit to access the river. Additionally, all participants must wear a personal flotation device (PFD) at all times.

Overall, the Whitewater River Run Boise NF Boundary to Confluence with Payette River is a challenging and exciting adventure for experienced whitewater enthusiasts. It is important to adhere to all regulations and take necessary safety precautions before embarking on this thrilling journey.