The Whitewater River Run in Washington State is a thrilling adventure for experienced white-water rafters. The ideal streamflow range for this river run is between 1000-4000 cfs, which can only be found during the spring months when snow melt is at its peak. The class rating for this river run is Class IV-V, making it a challenging and technical river to navigate. The segment mileage for this river run is approximately 16 miles, starting at the Headwaters and includes all tributaries to confluence with Graves Creek.

There are specific river rapids and obstacles that make this river run exciting and challenging. Some of the notable rapids include Boulder Drop, Hammering Spot, and Snowblind. These rapids require advanced skills in navigating technical water and fast-moving rapids. The river also has several large boulders and steep drops that add to the excitement of the run.

There are specific regulations to the area that must be followed to ensure safety. All rafters must wear a personal flotation device (PFD) at all times on the river. Additionally, all rafts must be equipped with a throw rope, first aid kit, and repair kit. Rafters must also be experienced in white-water rafting and have the necessary skills to navigate the river safely.

Overall, the Whitewater River Run is an exciting and challenging river run that is not for the faint of heart. It is recommended that only experienced white-water rafters attempt this run and that all safety regulations are followed to ensure a safe and thrilling experience.