The Whitewater River Run is a popular rafting destination in California, spanning 7 miles from Isabella Dam to 20.2 miles from the dam. The ideal streamflow range for this section is between 800-2,000 cubic feet per second (cfs), which provides exciting rapids without being too dangerous. The run is rated as Class III, which means it is moderately difficult and requires some skill and maneuvering.

The segment mileage for this section is 13.2 miles, and there are various rapids and obstacles to watch out for, including Funnel Falls, Deadman's Drop, and Pinball. Funnel Falls is a Class III+ rapid that requires precise maneuvering through a narrow chute. Deadman's Drop is a steep, technical rapid that requires a strategic approach. Pinball is a boulder garden that challenges paddlers to navigate through a maze of rocks.

There are specific regulations in place for the Whitewater River Run. All boaters are required to wear a properly fitting personal flotation device (PFD) at all times while on the river. Additionally, it is prohibited to operate any vessel while under the influence of drugs or alcohol. Anyone under the age of 18 must have parental consent and wear a PFD at all times.

In summary, the Whitewater River Run is a thrilling rafting experience with an ideal streamflow range of 800-2,000 cfs. It is rated as Class III and spans 13.2 miles with challenging rapids such as Funnel Falls, Deadman's Drop, and Pinball. Specific regulations are in place, including wearing a proper PFD and not operating a vessel while under the influence.