The Whitewater River Run from Headwaters to Inlet Pettit Lake in Idaho is a popular route for whitewater enthusiasts. The ideal streamflow range for this segment is between 500-1500 cfs, although it can go up to 3000 cfs during peak season. The class rating for this section is Class III-IV, with some challenging rapids and obstacles that require technical skills.

The total segment mileage for this run is around 6 miles, with the longest continuous rapid being around 1 mile. Some of the notable rapids and obstacles include "Squaw Creek," "Molly's Nipple," and "Boulder Garden." The river also features several drops, chutes, and eddies that require careful navigation.

It is important to note that this section of the Whitewater River is regulated by the Sawtooth National Forest and the Boise National Forest. Visitors must obtain a permit to access the river, and there are strict regulations in place to protect the wilderness area. Visitors are also required to follow Leave No Trace principles, pack out all trash, and respect the environment.

Overall, the Whitewater River Run from Headwaters to Inlet Pettit Lake is a challenging and rewarding experience for experienced whitewater paddlers. It offers some of the best rapids and obstacles in Idaho, and is a great way to experience the natural beauty of the state. Get driving directions.