The San Pedro River, located in southern Arizona, is a popular destination for whitewater enthusiasts. The ideal streamflow range for the river is between 200-600 cubic feet per second (cfs), which typically occurs during the monsoon season from July to September.

The river is rated as a class II-III, with rapids ranging from easy to moderate difficulty. The segment of the river most commonly run by rafters is a 10-mile stretch between the towns of Dudleyville and Winkelman. This section of the river features several rapids, including Pinball, Rollercoaster, and Roostertail.

One of the main obstacles on the San Pedro River is the presence of strainers, fallen trees or debris that create dangerous conditions for boaters. It is important for paddlers to be aware of these hazards and to take caution when navigating the river.

There are specific regulations in place for the San Pedro River, including a ban on glass containers and a limit on the number of people allowed on each raft. Additionally, all boaters are required to wear personal flotation devices (PFDs) at all times while on the river.

Overall, the San Pedro River offers a thrilling whitewater experience for paddlers, but it is important to be aware of the ideal streamflow range, class rating, specific rapids and obstacles, and regulations before embarking on a trip.