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The Whitewater River run from Headwaters in Marble Mtn. Wilderness to Confluence with Fish Creek in California is a popular destination for whitewater enthusiasts. The ideal streamflow range for this run is between 500-1500 cfs, which provides Class III-IV rapids. The segment mileage is approximately 9 miles and it takes around 4-5 hours to complete.

One of the most challenging rapids in this section is the Mule Creek Falls, which is a Class V rapid with a steep drop and a dangerous undercut rock. Other notable rapids include the Marble Canyon, a Class IV rapid that involves maneuvering through a narrow gorge, and the Limestone Slide, a Class III rapid that has a long and steep descent.

There are specific regulations that must be followed when navigating this river. For instance, all boaters must carry a California Boater Card and wear a US Coast Guard approved personal flotation device (PFD). Additionally, camping is not permitted along the riverbank, and all fires must be contained in a fire pan.

In conclusion, the Whitewater River run from Headwaters in Marble Mtn. Wilderness to Confluence with Fish Creek in California is a thrilling and challenging experience for whitewater enthusiasts. With proper planning and adherence to regulations, it can be a safe and enjoyable adventure.