The Whitewater River Run Headwaters to Wilderness Boundary in California covers a distance of 30 miles and is rated as Class III-V in difficulty. Ideal streamflow range is between 300-1000 cfs. The river begins with a mellow Class II run before reaching the first major obstacle, the Narrows, which consists of a Class V rapid that requires expert kayaking skills. The river then continues with Class III-IV rapids, including The Boulders, Hurricane Falls, and Meatgrinder. The final stretch of the run features the Class V Rapid - Widowmaker.

To protect the environment and preserve the wilderness experience, the use of motorized boats, swimming, and camping are prohibited in the area. Additionally, visitors are encouraged to pack out all trash and respect wildlife in the surrounding area.