The whitewater river run from Fir Creek Campground to Boise National Forest Boundary in Idaho offers an exciting adventure for river enthusiasts. The ideal streamflow range for this section of the river is between 600 and 2000 cfs. This section of the river is rated class III, which means it has moderate difficulty and requires intermediate paddling skills.

The segment mileage for this river run is approximately 12 miles, which takes around 4-5 hours to complete. The rapids in this section of the river include Garden Creek Rapid, Charlie's Hole, and Devil's Slide. These rapids offer exciting challenges and require skilled maneuvering.

Specific regulations to the area include a permit requirement for commercial outfitters and a maximum group size of 12 people. The use of personal flotation devices (PFDs) is mandatory for all participants, and alcohol is prohibited on the river. Additionally, visitors must adhere to Leave No Trace principles to preserve the natural beauty of the area.