The section of the Whitewater River from Hopewell Lake to the New Mexico Boundary is a popular destination for whitewater enthusiasts. The ideal streamflow range for this section is between 300 and 800 cfs. The segment mileage is approximately 7 miles, and the class rating ranges from II to IV.

There are several notable rapids and obstacles along this section of the river, including the "Box," a narrow and technical rapid that requires precise navigation. The "S-Turn" is another challenging rapid, with multiple channels and obstacles to navigate.

There are specific regulations to be aware of when planning a trip on the Whitewater River. A permit is required for all overnight use, and camping is only allowed in designated areas. Additionally, there are restrictions on the use of motorized watercraft, and all visitors are required to follow Leave No Trace principles to minimize their impact on the environment.

Overall, the Hopewell Lake to Nf Boundary section of the Whitewater River is a challenging and rewarding destination for experienced whitewater paddlers. However, visitors should be aware of the specific regulations and take steps to ensure that they are prepared for the technical rapids and obstacles along the route.