The Whitewater River Run in Washington State is an exciting adventure for avid kayakers and rafters. The ideal streamflow range for this section of the river is between 1500 and 4500 cfs, which provides the necessary speed and excitement for a thrilling ride. The class rating for this section is Class IV, with some Class V rapids, which require advanced paddling skills and experience. The segment mileage for this run is approximately 18 miles, starting at Sutherland Lake and ending at the confluence with the Elwha River.

Some of the specific rapids and obstacles on this run include Boulder Drop, a Class V rapid that requires precise maneuvering around large boulders; S-turn, a Class IV rapid that features a tight turn and swift current; and Boxcar, a Class IV rapid with a steep drop and powerful waves.

There are specific regulations for this area, including the requirement for a valid permit to access the river. The Olympic National Park manages this section, and visitors must follow all rules and regulations to protect the natural environment and ensure visitor safety. It is essential to check the weather conditions and water levels before embarking on this adventure, as the river can be dangerous during high water periods. Overall, the Whitewater River Run is an exciting and challenging adventure for experienced kayakers and rafters, offering stunning scenery and thrilling rapids.