The Whitewater River Run in Oregon is a popular destination for kayakers and rafters. The ideal streamflow range for this river is 800-1500 cfs, which typically occurs in the months of May and June. The river is rated as a Class III-IV for most of the run, with some Class V rapids in certain sections.

The river begins at the Whitewater Glacier in the Cascade Range and flows for 31 miles before joining with the Metolius River. The segment mileage varies depending on where you put in and take out, but most trips cover around 12-15 miles.

Some of the notable rapids and obstacles on the Whitewater River Run include Rattlesnake, Deadman's, and Gash Rapid. These are all Class IV rapids that require skill and experience to navigate safely. The river also features several Class III rapids that provide exciting but manageable challenges for intermediate paddlers.

In terms of regulations, the Whitewater River Run is located within the Mt. Jefferson Wilderness Area, which means that visitors are required to follow Leave No Trace principles and obtain a permit for overnight trips. Additionally, motorized boats are not allowed on the river, and visitors are expected to pack out all trash and waste.

Overall, the Whitewater River Run is a thrilling and challenging destination for whitewater enthusiasts. It is important to check streamflow levels and be prepared for the Class IV rapids before embarking on this adventure.