The whitewater river run from South Park Bridge to 1 mile downstream from Astoria Hot Springs in Wyoming is a popular destination for kayakers and rafters. The ideal streamflow range for this section of the river is between 1,500 and 3,000 cfs. At this flow, the rapids are class II-III, making it a suitable run for intermediate paddlers.

The segment mileage for this run is approximately 7 miles, starting at the South Park Bridge and ending at the North Section Line of Sec 5, T38N, R116W. Along the way, paddlers will encounter several notable rapids and obstacles, including Rock Garden, Funnel Falls, and the Big Kahuna.

There are specific regulations that paddlers must follow when navigating this section of the river. It is important to know that Astoria Hot Springs is private property, and paddlers should not stop or recreate on the property. Additionally, paddlers should avoid creating new campsites and should pack out any trash or waste.

Overall, the whitewater river run from South Park Bridge to 1 mile downstream from Astoria Hot Springs is a thrilling and scenic experience for intermediate paddlers. It is important to check streamflow conditions before undertaking this run and to follow all regulations to preserve the natural beauty of the area.