The North Fork Mission Creek, located in the San Bernardino National Forest in California, is a popular destination for whitewater rafting enthusiasts. The ideal streamflow range for this river is between 400 and 800 cubic feet per second (cfs), which typically occurs during the spring and early summer months. The river is classified as a Class IV/V, which means that it is only suitable for experienced and skilled rafters. The segment mileage of the North Fork Mission Creek is approximately 7 miles, and it features a number of challenging rapids and obstacles, including "Broken Nose," "Powerhouse," and "Downtown."

There are specific regulations in place for this area, including a permit requirement for all visitors to the San Gorgonio Wilderness. Additionally, visitors are required to pack out all trash and waste, as well as follow Leave No Trace principles to minimize their impact on the environment. It is also recommended that visitors wear appropriate safety gear, including helmets and life jackets, and that they have prior experience navigating Class IV/V rapids. Overall, the North Fork Mission Creek offers a thrilling and challenging whitewater rafting experience for experienced rafters who are up for the adventure.