The Whitewater River run on the South Fork Tongue River in Wyoming is a popular destination for skilled whitewater enthusiasts. The ideal streamflow range for this run is between 500-1500 cfs, with higher flows providing significantly more challenging rapids. The class rating of this run ranges from Class II-IV.

The segment mileage for the Whitewater river run is approximately 8.5 miles, starting at Johnson Creek and running down to the confluence with the North Fork Tongue River. This run features several exciting rapids, including "The Notch," a steep and narrow drop that requires precise navigation.

Regulations for this area include a limit on the number of permits issued each day, which helps to manage the impact of high usage on the environment. Additionally, boaters are required to wear personal flotation devices at all times while on the river, and pack out all trash and waste.

Overall, the Whitewater River run on the South Fork Tongue River provides a thrilling and challenging whitewater experience for experienced boaters who are comfortable with Class II-IV rapids. It is important to follow regulations and best practices to preserve this beautiful natural resource for future generations.