The Whitewater River Run Fish Hatchery to Nf Boundary in California is a popular destination for whitewater rafting enthusiasts. The ideal streamflow range for this section of the river is between 200-1000 cfs, with the best conditions typically occurring in the spring months. The class rating of this section is Class III-IV, making it suitable for intermediate to advanced rafters.

The segment mileage for this section is approximately 7 miles, with several notable rapids and obstacles. One of the most challenging rapids on this stretch is known as "Horse Thief" and is characterized by a large boulder at the bottom of the rapid that can cause significant turbulence. Other notable rapids include "S Turn" and "The Maze."

There are specific regulations in place for this area, including the requirement of a permit for rafting groups and a limit on the number of permits issued per day. Additionally, all rafters must wear a personal flotation device and helmets are strongly recommended.