The Whitewater River Run Wilderness Boundary To Mouth in Utah is a popular destination for kayaking and rafting enthusiasts. The ideal streamflow range for this river is between 500-2,000 cfs, which provides Class I-III rapids and a thrilling ride for visitors. The segment mileage for this run is 18 miles, starting from the wilderness boundary and ending at the mouth of the Colorado River.

The specific rapids and obstacles on this run include Holeshot, a Class III rapid with a steep drop and large waves, and Big Drop 2, a Class III+ rapid with a large drop and complex rock formations. Other notable features include waterfalls, narrow canyons, and scenic views of the surrounding landscape.

Regulations for this area include obtaining a permit from the Bureau of Land Management (BLM) and adhering to Leave No Trace principles. Visitors are also required to pack out all trash and avoid damaging the natural environment. Additionally, visitors should be aware of potential hazards such as flash floods and high water levels.

Overall, the Whitewater River Run Wilderness Boundary To Mouth offers a challenging and exciting experience for experienced kayakers and rafters. Visitors should be prepared for the Class III rapids and take necessary precautions to ensure safety while enjoying the natural beauty of this area.