The West Fork Mission Creek, located in California, is a popular whitewater river run with an ideal streamflow range between 100 and 300 cubic feet per second (cfs). This section of the river is rated as Class III-IV, with a segment mileage of 3.5 miles. The river is characterized by steep drops, boulder gardens, and tight chutes. The most notable rapids on this run are The S-Turn, The Pipeline, and The Gully. These rapids require technical maneuvering and precise navigation to run successfully.

To access this section of the river, paddlers must obtain a permit from the San Bernardino National Forest. Additionally, there are specific regulations in place to protect sensitive riparian areas and wildlife habitat. Visitors are required to practice Leave No Trace principles and follow all regulations set forth by the Forest Service.

Overall, the West Fork Mission Creek is a thrilling and challenging whitewater run for experienced paddlers. It is important to check streamflow conditions before heading out and to be aware of any changes in weather or river conditions that could impact safety.