The Whitewater River run in California is a popular spot for kayaking and whitewater rafting enthusiasts. The ideal streamflow range for this run is between 200 and 400 cubic feet per second (cfs), making it a Class III to IV-rated rapid. The segment mileage is approximately 0.25 miles downstream of the impoundment of Sportsman's Lodge to the Ventana Wilderness Boundary.

The Whitewater River has several rapids and obstacles including "Triple Drop," "The Elevator," and "The Maze." The Triple Drop is a series of three drops with steep ledges and strong currents, while The Elevator is a long, steep drop with a turbulent pool at the bottom. The Maze is a series of twisting channels that require precise navigation.

There are specific regulations in place for the Whitewater River run. All boaters must wear a personal flotation device (PFD) and a helmet at all times while on the river. Camping is not permitted along the riverbanks, and all trash must be carried out. The use of alcohol and drugs is strictly prohibited on the river.

In summary, the Whitewater River run in California is a thrilling and challenging experience for skilled kayakers and whitewater rafters. With its Class III to IV rating, specific rapids and obstacles, and regulations in place, it offers a safe and exciting adventure for those seeking an adrenaline rush on the water.