The Whitewater River run from the Headwaters of Side Channel in Sec 12, T25S, R22E to Horse Canyon in Sec 2, T25S, R22E in New Mexico is a 9-mile segment with a Class III rating. The ideal streamflow range is between 300-600 cubic feet per second (cfs). During the spring, the flow can reach up to 1,000 cfs, making it a more challenging run.

The rapids and obstacles on this segment include "The Chute," a narrow and steep section of the river with Class III rapids, and "The Ledges," a series of Class II rapids with large boulders. The section also has several boulder gardens and technical sections that require precise maneuvering.

Specific regulations to the area include the use of personal flotation devices (PFDs) for all participants, and a permit is required to launch from the BLM managed property. The use of motorized vehicles, camping, and fires are prohibited in the area.