The Whitewater River Run Cuttoff is a popular rafting location in the state of Montana. The ideal streamflow range for this section of the river is between 1,200 and 3,000 cubic feet per second (cfs). This section of the river is rated as Class III, with some Class IV sections, and covers a segment mileage of approximately 28 miles from Section 9, T18N, R27W to Section 34, T19N, R25W.

The river rapids and obstacles include "The Notch," a steep, narrow chute that requires expert maneuvering, and "The Jaws," a series of large boulders that create a challenging rapid. Other notable rapids include "Boulder Garden," "Kitchen Sink," and "Screaming Left Turn."

There are specific regulations for this area, including a requirement for all boaters to wear personal flotation devices (PFDs) at all times. Additionally, all boaters must carry a sound-producing device and a spare paddle. Camping is allowed along the river, but fires are prohibited. It is essential to obtain a permit before camping. The area is also subject to seasonal closures and restrictions due to weather and water conditions.

Overall, the Whitewater River Run Cuttoff offers a thrilling and challenging rafting experience for experienced boaters. It is essential to be aware of the specific regulations and to check current streamflow conditions before embarking on a trip down this section of the river.