The Whitewater River Run is a popular destination for whitewater enthusiasts in Southern California. The wilderness boundary of this river run begins at the San Gorgonio Wilderness boundary and extends downstream to the Los Angeles Department of Water and Power property. The ideal streamflow range for this river run is between 100 and 350 cubic feet per second, which is usually found during the spring snowmelt or after significant rainfall.

The Whitewater River Run is rated as a class III-IV rapids, which means it is suitable for intermediate to advanced paddlers. The segment mileage of the river run is approximately 5 miles, and it features several exciting rapids such as Corner Pocket and Terminator. Paddlers must be cautious of obstacles such as fallen trees, boulders, and shallow areas of the river.

Specific regulations for this area include the requirement of a permit to enter the San Gorgonio Wilderness area, as well as a permit for overnight camping. Additionally, no motorized equipment is allowed on the river, and all waste must be properly packed out. It is also important for paddlers to be aware of the potential dangers of flash floods, which can occur during heavy rains in the surrounding mountains.