The Whitewater River Run from Tom's Valley Creek Headwaters to Confluence with Elk Creek in California is a popular destination for whitewater enthusiasts. The ideal streamflow range for this stretch of the river is between 200 and 500 cubic feet per second (cfs), which typically occurs during the spring and early summer months. The segment mileage for this run is approximately 10 miles, with a class rating of III-IV.

There are several notable rapids and obstacles along this stretch of the river, including "Rock Garden," "Pinball," and "Meat Grinder." These rapids require technical maneuvering and are best suited for experienced whitewater kayakers and rafters.

It is important to note that this section of the Whitewater River is located on private property, and access to the river is limited. A permit is required to access the river, and visitors are asked to respect the land by packing out all trash and leaving the area as they found it.

In summary, the Whitewater River Run from Tom's Valley Creek Headwaters to Confluence with Elk Creek in California is a challenging and exciting whitewater experience. With a class rating of III-IV, ideal streamflow range between 200 and 500 cfs, and several technical rapids and obstacles, this stretch of the river is best suited for experienced whitewater enthusiasts. Additionally, visitors must obtain a permit and respect the private property on which the river is located.