The Whitewater River Run in Montana spans from Section 15, T2S, R10W to Lion Creek, Section 4, T3S, R11W. The ideal streamflow range for this segment is between 1,000 and 5,000 cubic feet per second (cfs). The class rating for this river run is Class III, with some Class IV rapids. The segment mileage is approximately 12 miles.

Specific river rapids and obstacles on this run include Devil's Kitchen, which is a Class IV rapid that requires technical maneuvering around large boulders, and Fangs, a Class III rapid that features a series of narrow chutes and drops. Additionally, the run includes several smaller rapids and riffles that require precise navigation.

Specific regulations for the area include mandatory life jackets for all boaters and a ban on alcohol consumption while on the river. Additionally, the river is closed to floating during periods of high water, and all boaters must carry a fire extinguisher and a whistle.

Sources for this information include Montana River Action and the Montana Department of Fish, Wildlife, and Parks. It is important to verify the accuracy of information related to river conditions and regulations before undertaking any river activity.