The Whitewater River is a popular destination for rafting enthusiasts in California. The ideal streamflow range for the river ranges from 500 to 2000 cfs, depending on the time of year, with the best conditions typically occurring in the spring and early summer. The river is rated as a Class III-IV, with some sections featuring challenging rapids and obstacles.

The segment from the headwaters in Sec. 14, T4S, R1E, HM to the junction with the Mattole River covers approximately 20 miles. Along the way, rafters will encounter notable rapids such as "Big Bend" and "Gobbler's Knob". The river also features several waterfalls and pools, adding to the excitement of the trip.

Visitors to the Whitewater River should be aware of specific regulations in the area. In particular, permits are required for all overnight stays in the river corridor and fires are only allowed in designated areas. Additionally, visitors are required to follow Leave No Trace principles and pack out all trash.

Overall, the Whitewater River is a thrilling and challenging destination for experienced rafters. With its wide range of rapids and obstacles, stunning scenery, and specific regulations, it's an adventure that's not to be missed.