The Whitewater River Run is located in California, beginning 2.5 miles west of Little Valley and ending at the juncture with the Pit River. The ideal streamflow range for this run is between 300-800 cubic feet per second (cfs), providing exciting rapids without being too dangerous. The class rating for this run ranges from Class II to Class IV, with some challenging drops and rapids.

The total segment mileage for this run is around 10 miles, with several notable rapids and obstacles. Some of the most challenging rapids include "Little Whirlpool," "Satan's Gate," and "Pinball." These rapids require skill and experience to navigate safely and should only be attempted by experienced paddlers.

Specific regulations for the Whitewater River Run include a permit requirement to access the area. Additionally, there are rules against littering, camping in undesignated areas, and disturbing wildlife. Paddlers are also required to wear appropriate safety gear, including helmets and personal flotation devices.

Overall, the Whitewater River Run provides an exciting and challenging experience for experienced paddlers. The ideal streamflow range, class rating, segment mileage, and specific rapids and obstacles provide a unique experience for those looking for a challenging whitewater run. However, it is important to follow all regulations and safety guidelines to ensure a safe and enjoyable experience.