The North Fork of the Red Fork Powder River is a popular whitewater river run located in the state of Wyoming. It is classified as a Class III-IV river, with an ideal streamflow range of 200-800 cfs. The segment mileage of this river run is approximately 6.5 miles, with specific rapids and obstacles such as the "Box Drop," "Pinball," "S-Turn," and "Razorback."

The "Box Drop" is a steep and narrow section of the river that requires precise navigation, while "Pinball" features several boulders that must be maneuvered around. The "S-Turn" is a tight, twisting section of the river that requires quick and precise turns, and the "Razorback" is a narrow chute that requires careful positioning of the boat.

There are specific regulations in place for this area, including the requirement of personal flotation devices for all participants, as well as restrictions on camping and fires. It is important to note that this river run is not recommended for beginners, as the rapids and obstacles can be challenging even for experienced paddlers.

Overall, the North Fork of the Red Fork Powder River offers a thrilling whitewater experience for those looking for a challenging adventure in the state of Wyoming. It is important to plan and prepare accordingly, and to adhere to all regulations and safety guidelines to ensure a safe and enjoyable trip.