The Middle Fork of the John Day River, also known as the Whitewater River Run, is a popular destination for whitewater enthusiasts in Oregon. The ideal streamflow range for this river is between 800-2,000 cfs, which typically occurs during the months of May-June. The segment mileage of this run is approximately 42 miles, starting in the middle of Sec 15, T39S, R4E and ending at the confluence with Canyon Creek.

The Middle Fork of the John Day River is classified as a class III-IV river, with several challenging rapids and obstacles to navigate, including Twister, Zinger, and Devil's Staircase. The river is best suited for experienced kayakers and rafters, as the rapids can be difficult to maneuver.

There are specific regulations in place for the Whitewater River Run, including a permit system for overnight camping and a limit on the number of people allowed on the river at one time. It is important for visitors to familiarize themselves with these regulations before embarking on their whitewater adventure.

Overall, the Middle Fork of the John Day River provides an exciting and challenging whitewater experience for experienced paddlers. However, it is important to always prioritize safety and follow regulations to protect the natural beauty of the area.