The Whitewater River Run from Beaver Lake to the Wilderness Boundary in Wyoming is a thrilling and challenging adventure for experienced white-water rafters. The ideal streamflow range for this stretch of the river is between 800-1,200 cfs, providing the perfect balance of excitement and safety. The class rating for this section of the river varies from class III to IV, with several high-intensity rapids and obstacles throughout the segment's 10-mile distance. Some of the most notable rapids include the S-Turn, the Narrows, and the Boulder Garden.

This river run is subject to specific regulations to ensure the safety of all rafters and preserve the natural beauty of the river. The maximum group size for any river trip on the Whitewater River is 16 people, and all commercial trips must be accompanied by a licensed guide. Additionally, all participants must wear personal flotation devices at all times while on the river.

In conclusion, the Whitewater River Run from Beaver Lake to the Wilderness Boundary in Wyoming offers an exhilarating experience for experienced white-water rafters. With an ideal streamflow range of 800-1,200 cfs, a class rating of III-IV, and various rapids and obstacles, this river run is not for the faint of heart. To enjoy this adventure, rafters must adhere to specific regulations set in place to ensure their safety and preserve the river's natural beauty.