The Headwaters to Forest Boundary section of the Whitewater River in Nevada is a popular destination among whitewater enthusiasts. The ideal streamflow range for this section is between 200 and 600 cubic feet per second (cfs). The class rating of this section is mostly class II, with some class III rapids. The segment mileage for this section is approximately 11 miles.

Some of the specific rapids and obstacles that paddlers will encounter during their run include the California Slide, a class III rapid that requires precise navigation, and the Windy Hole, a class II rapid known for its strong eddies. Paddlers should also be aware of the river's rocky bottom and narrow channels.

In terms of regulations, paddlers are required to obtain a permit from the Bureau of Land Management before launching on this section of the river. Additionally, camping is only allowed at designated campsites and all trash must be packed out. These regulations are in place to ensure the preservation of the natural surroundings and to minimize the impact of human activities on the river and its ecosystem.

Overall, the Headwaters to Forest Boundary section of the Whitewater River offers a thrilling and challenging experience for whitewater enthusiasts, with its ideal streamflow range, class rating, and specific rapids and obstacles. However, it is important for paddlers to abide by the regulations in place to ensure the long-term sustainability of this valuable natural resource.