The Whitewater River run from Hard Creek Lake to Payette National Forest Boundary in Oregon is a challenging and exciting adventure for experienced kayakers and rafters. The ideal streamflow range for this run is between 800 and 2000 cfs, which can be checked on the USGS website. The class rating for this run is III-IV, which means that it is moderately difficult with some significant rapids and obstacles.

The segment mileage for this run is approximately 6.5 miles, and it takes about 3-4 hours to complete. Some of the specific rapids and obstacles include Hard Creek Falls, S-Turn, and Waterfall Rapid, which require a high level of skill and experience to navigate safely. It is important to note that this run is not suitable for beginners or novice paddlers.

Specific regulations to the area include the requirement for a permit from the Bureau of Land Management (BLM) to access the river. The BLM also requires that all boaters wear personal flotation devices and carry appropriate safety equipment. Additionally, there are restrictions on camping, fires, and littering in the area to protect the environment and maintain the natural beauty of the river.

Overall, the Whitewater River run from Hard Creek Lake to Payette National Forest Boundary is a thrilling and challenging adventure for experienced paddlers. It is important to check the streamflow range, understand the class rating, and follow all regulations to ensure a safe and enjoyable trip.