The Whitewater River run from Confluence with Rancheria Creek to Forest Road 46N24X is a popular kayaking and rafting stretch in California. The ideal streamflow range for this stretch is between 400 and 1000 cfs, with 600 cfs being the optimal level for kayaking. The class rating is mainly class III, with some class IV sections during higher flow periods.

The segment mileage is approximately 7.5 miles long and includes technical rapids such as Pinball, Staircase, and Crack in the Wall. Other notable rapids include Double Drop, which is a steep and technical rapid that requires careful maneuvering, and Last Chance, which is a long and continuous rapid with several drops.

It is important to note that this section of the Whitewater River is located on public lands managed by the United States Forest Service. Therefore, specific regulations apply to the area, including the requirement of a permit for commercial outfitting and the prohibition of camping within 100 feet of the river.

In conclusion, the Whitewater River run from Confluence with Rancheria Creek to Forest Road 46N24X is a challenging and exciting stretch for experienced kayakers and rafters. Ideal streamflow ranges, class ratings, segment mileage, specific rapids/obstacles, and regulations should be taken into consideration before embarking on this adventure.