The South Fork Snake River in Idaho is an exciting and challenging whitewater river run. The ideal streamflow range for this river is between 5,000 and 15,000 cubic feet per second (cfs), which typically occurs in late May through early July. The class rating for this river ranges from class II to class IV, with some challenging rapids and obstacles along the way.

The segment mileage for the South Fork Snake River run is approximately 64 miles, with several scenic areas and challenging rapids such as the Big Kahuna, the Lunch Counter, and the Cottonwood Rapids. The river also features stunning views of the Teton Range and the surrounding wilderness.

Regulations for this area include a mandatory life jacket requirement for all participants, a limit on the number of people per raft, and a prohibition on alcohol and drugs. It is important to follow all regulations and guidelines to ensure a safe and enjoyable experience on the river.

Overall, the South Fork Snake River run is an exciting and challenging adventure for experienced whitewater rafters. Proper preparation and adherence to regulations will ensure a safe and enjoyable trip on this beautiful river.