The Whitewater river run from Trial Lake to U35 Bridge in Utah is a popular destination for kayakers and rafters. The ideal streamflow range for this stretch of the river is between 100-700 cubic feet per second (cfs), but it can be run at higher flows with experience. The class rating for this section of the river is class III-IV, with some sections reaching class V during high water. The total segment mileage is approximately 7.5 miles, taking about 2-3 hours to complete.

There are several rapids and obstacles on this stretch of the river, including the Three Forks rapid, which has a large, technical drop, and the Narrows, which is a steep and narrow section of the river. There are also several other class III-IV rapids, including Hells Hole and the Box.

There are specific regulations to the area, including a requirement for personal floatation devices (PFDs) and helmets for all boaters. There are also restrictions on camping and fires in the area, as well as regulations on fishing and hunting.