The Whitewater River is a popular destination for kayakers and rafters in Utah. The ideal streamflow range for this river is between 600-1200 cfs, according to American Whitewater. This river is rated Class III-IV, meaning it has medium to high difficulty rapids with moderate to high levels of danger. The river run is approximately 14 miles in length and is divided into three segments.

The Upper segment, which covers 3 miles, is Class II-III. The Middle segment, covering 5 miles, has the most challenging rapids, including "Pyramid," "Devil's Slide," and "The Maze." This segment is rated Class IV. Finally, the Lower segment, covering 6 miles, is Class III.

The Whitewater River has several rapids and obstacles that kayakers and rafters should be aware of. Some of the most notable rapids include "Pyramid," a Class IV rapid with a steep drop and a tight turn; "The Maze," a Class IV rapid with a narrow chute and a sharp turn; and "The Narrows," a Class III rapid with a rocky entrance and a narrow channel.

There are specific regulations for the Whitewater River that visitors should be aware of. Permits are required for all commercial and private trips on the river, and all visitors must follow Leave No Trace principles and pack out all trash. Additionally, visitors should be aware of the potential for flash floods and take necessary precautions.

Overall, the Whitewater River provides a thrilling and challenging experience for kayakers and rafters. With its ideal streamflow range, class rating, segment mileage, specific rapids/obstacles, and specific regulations, this river is a must-visit for outdoor enthusiasts looking for an adventure in Utah.