The Whitewater River Run from Headwaters to Confluence with Three Cabins Creek in Idaho is a popular destination for whitewater enthusiasts. The ideal streamflow range for this run is between 1,000 and 4,000 cubic feet per second (cfs), depending on the experience level of the paddlers. The class rating for this run ranges from Class II to Class IV, with some challenging rapids and obstacles along the way.

The segment mileage for this run is approximately 12 miles, with notable rapids such as Pinball, the Narrows, and Big Baby. Pinball is a Class III rapid that requires precise maneuvering through a series of rocks and drops. The Narrows is a Class IV rapid with a narrow channel and a powerful hydraulic at the bottom. Big Baby is a Class III rapid with a large wave train that can swamp unwary paddlers.

There are specific regulations to the area, including the requirement for a permit to run the river. The permit system is designed to limit the number of people on the river at any given time and to ensure that everyone has a safe and enjoyable experience. Additionally, all paddlers must wear a properly fitting personal flotation device and have a throw bag and whistle accessible at all times.

Overall, the Whitewater River Run from Headwaters to Confluence with Three Cabins Creek offers a thrilling whitewater experience for paddlers of all skill levels. However, it is important to be aware of the ideal streamflow range, class rating, specific rapids and obstacles, and regulations before embarking on this adventure.