The Whitewater River run, located in the state of Washington, is a popular destination for kayakers and rafters. The ideal streamflow range for this river run is between 500-2000 cfs. The river is classified as Class III-IV, with some sections reaching Class V. The segment mileage of the Whitewater River run is approximately 5 miles, with the run starting at the headwaters and including all tributaries to the confluence with Twin Creek.

There are several notable rapids and obstacles along the Whitewater River run, including Husum Falls, a Class V rapid that requires expert skill and experience to navigate. Other challenging rapids include Wickyup, The Wave, and Rattlesnake, all of which are Class IV rapids. In addition, there are several Class III rapids throughout the run, providing a mix of difficulty levels for kayakers and rafters.

Specific regulations for the area include a minimum age limit of 14 for kayakers and 6 for rafters. All participants must wear a personal flotation device (PFD) at all times while on the river. In addition, there are restrictions on the use of alcohol and drugs, and participants are required to follow Leave No Trace principles.

Overall, the Whitewater River run offers a challenging and exciting adventure for experienced kayakers and rafters. It is important to adhere to all regulations and safety guidelines, and to be aware of the river's specific rapids and obstacles before embarking on the run.