The West Fork Illinois River, located in Southern Oregon, is a popular whitewater river run that offers thrilling rapids and stunning scenery. The ideal streamflow range for this river is between 700-1200 cfs, which is typically available from April through early June. The West Fork Illinois River is rated as a Class III-IV river, meaning it offers intermediate to advanced level rapids with moderate to high difficulty.

The total segment mileage of the West Fork Illinois River run is approximately 9 miles, which can typically be completed in about 4-5 hours. Specific rapids and obstacles on this river include the Wildcat Rapid, Boulder Alley, and the infamous Green Wall. The Green Wall is a Class IV rapid that offers a steep and technical drop, and is considered the most challenging part of the run.

There are specific regulations in place for the West Fork Illinois River, including a mandatory shuttle service for all rafters and kayakers. Additionally, all boaters must obtain a permit from the Bureau of Land Management and follow Leave No Trace principles to help preserve the natural beauty of the area. It is also recommended that all boaters wear proper safety gear, such as a helmet and life jacket, and have experience with Class III-IV rapids.

Overall, the West Fork Illinois River is a thrilling whitewater river run for experienced rafters and kayakers seeking a challenging adventure in a beautiful natural setting. It is important to follow regulations and safety guidelines to ensure a safe and enjoyable experience on the river.