The Whitewater River Run, located in the state of Idaho, is a popular destination for whitewater enthusiasts. The ideal streamflow range for this run is between 1,000 and 3,000 cubic feet per second (cfs), as water levels above or below these ranges can make the rapids either too dangerous or too tame.

This run is classified as a Class III-IV, providing a challenging but manageable experience for intermediate and advanced paddlers. The segment mileage for this run is 6 miles, from Fs Road 319 to Selway River Road (Fs 223).

There are several rapids and obstacles along this run, including the "Waterfall" and "Pinball" rapids. The Waterfall is a Class IV rapid with a steep drop, while Pinball is a Class III rapid with several large boulders and a narrow channel to navigate.

Specific regulations for the area include obtaining a permit for overnight camping, as well as following Leave No Trace principles to minimize impact on the environment. Additionally, motorized watercraft are not allowed on this section of the river.

Overall, the Whitewater River Run offers a thrilling and scenic experience for paddlers within the ideal streamflow range, but caution and respect for the regulations and environment are necessary to ensure a safe and enjoyable trip.