The whitewater river run Confluence with South Fork Canyon Creek to Confluence with North Yuba River in California is a popular destination for experienced kayakers and rafters. The ideal streamflow range for this run is between 800-2,000 cfs. It is rated as a Class IV+ to V run with a segment mileage of 18.5 miles. The run features many challenging rapids and obstacles, including Widowmaker, a Class V rapid with a tight entrance and a dangerous undercut rock on the left side. Other notable rapids include Pinball, the Class IV+ S-Bend, and the Class IV+ Devil's Slide.

The area has specific regulations for river use. All boaters must have a valid California Boater Safety Card and wear a personal flotation device at all times. Camping is not allowed along the river, and fires are only permitted in designated areas. Additionally, there are strict regulations regarding the use of alcohol and drugs on the river.