The Whitewater River run Confluence with San Leonardo to NF Boundary is a popular destination for kayaking enthusiasts. The ideal streamflow range for this run is between 200 and 500 cubic feet per second (cfs), which typically occurs in the spring and early summer months. The segment mileage for this run is 7.5 miles, which includes several challenging rapids and obstacles.

The class rating for this run is Class III, which means the rapids are moderately difficult with moderate waves and obstacles. The rapids in this section of the river include The Gauntlet, Screaming Left, and Jaws. These rapids provide a thrilling challenge for experienced kayakers, but can be dangerous for those without proper training and equipment.

There are specific regulations that apply to this area, including a permit requirement from the Bureau of Land Management and a mandatory self-rescue clause. The self-rescue clause requires all kayakers to have the ability to pull themselves out of the river without assistance, as the remote location of the run can make it difficult for rescue teams to reach in case of emergency.

Overall, the Whitewater River run Confluence with San Leonardo to NF Boundary is a challenging and exciting destination for experienced kayakers looking for a thrilling adventure. However, it is important to follow all regulations and safety guidelines to ensure a safe and enjoyable experience on the river.