The whitewater river run in Dworshak Reservoir, Idaho, is a popular destination for whitewater enthusiasts. The ideal streamflow range for this run is between 2,500 and 8,000 cubic feet per second (cfs). The segment mileage of this run is approximately 20 miles, starting at section 34, T41N, R6E and ending at Forest Road #250, section 6, T40N, R11E.

This river run is rated as class III-IV, with challenging rapids and obstacles throughout the course. Some of the specific rapids and obstacles on this run include the Little Green Monster, The Black Hole, and Pinball. The Little Green Monster is a challenging rapid that requires precise maneuvering to navigate safely. The Black Hole is a powerful hydraulic that can easily flip a raft or kayak. Pinball is a technical section of the river with numerous rocks and obstacles that require quick thinking and expert paddling skills.

There are specific regulations in place for this area, including the requirement for a permit to use the river. Additionally, all participants are required to wear personal flotation devices (PFDs) at all times while on the water. The use of alcohol and drugs is prohibited while on the river, and all trash must be packed out.

Overall, the whitewater river run in Dworshak Reservoir, Idaho, provides a challenging and exciting experience for experienced whitewater enthusiasts. It is important to follow all regulations and safety guidelines to ensure a safe and enjoyable trip.