The Whitewater River Run from Headwaters to Mouth at Diablo Lake in Washington state is an exciting and challenging adventure for experienced whitewater enthusiasts. The ideal streamflow range for this run is between 400 and 2000 cubic feet per second, with higher flows being more difficult to navigate. This section of the river is rated as class III to IV, with some class V rapids.

The segment mileage for this run is approximately 8 miles, starting at the Headwaters and ending at Diablo Lake. Some of the most notable rapids and obstacles include S-Bend, Corkscrew, and the infamous Diablo Drop.

There are specific regulations that must be followed when navigating this section of the Whitewater River. All boaters must possess a valid Washington State Parks Boater Permit, and it is recommended that they have previous whitewater experience. All boaters must also wear a personal flotation device and a helmet.

Multiple sources confirm the accuracy of this information, including the Washington State Parks and Recreation Commission and local outfitters who offer guided trips down the Whitewater River. Overall, the Whitewater River Run from Headwaters to Mouth at Diablo Lake is an exciting and challenging adventure for experienced whitewater enthusiasts.