The Whitewater River Run in Washington State is a popular destination for kayakers and rafters. The ideal streamflow range for this river is between 500-1000 cfs, which provides enough water to navigate the rapids while still maintaining a manageable level of difficulty.

The class rating for this river ranges from Class II to Class IV, with the upper section being more challenging. The segment mileage for the Whitewater River Run is approximately 8 miles, starting from the headwaters and including all tributaries within the park to the confluence with the Bogachiel River.

Specific rapids and obstacles on this river include "The Chute," a Class III rapid, and "Mile Long," a Class IV rapid that requires precise maneuvering. Other notable features include boulder gardens and tight chutes.

To preserve the natural beauty of the area and ensure safety for visitors, there are specific regulations in place for the Whitewater River Run. Permits are required for all river trips, and visitors must adhere to guidelines for camping and waste disposal. Additionally, no motorized watercraft are allowed on the river.

Overall, the Whitewater River Run is a challenging and rewarding experience for experienced paddlers. With its stunning scenery, exciting rapids, and strict regulations, this river provides a unique adventure for outdoor enthusiasts.