The Whitewater River in the state of Washington is a popular destination for adventurous kayakers and rafters. The ideal streamflow range for this river is between 500 and 1500 cfs, with the best times to run being in the spring and early summer. The river is classified as a Class III-IV, with some technical sections that require experienced boaters.

The segment mileage of the Whitewater River run from the Alpine Lakes Wilderness Boundary to the confluence with the East Fork Miller River is approximately 7 miles. This section of the river features several challenging rapids, including Devil's Toilet Bowl, Meatgrinder, and Triple Drop.

Boaters should be aware of specific regulations in the area, such as the prohibition of motorized watercraft and the requirement for a valid Washington State fishing license. Additionally, the use of fire is prohibited along the river banks. It is also important for boaters to practice responsible river etiquette, such as leaving no trace and respecting other users of the river.