The North Fork Shoshone River is a popular whitewater river run located in the state of Wyoming. The ideal streamflow range for this river is between 500 and 2000 cfs. The river has a class rating of III-IV, and the segment mileage is 20.7 miles.

The North Fork Shoshone River is known for its challenging rapids and obstacles. Some specific rapids include the "Dinner Hole," "Crazy Creek Falls," and "Squeeze Play." The "Dinner Hole" is a Class III rapid that requires precise maneuvering to avoid a large hole in the middle of the river. "Crazy Creek Falls" is a Class IV rapid with a steep drop that requires expert navigation. "Squeeze Play" is a Class III rapid that requires paddlers to navigate a narrow gap between two rocks.

In terms of regulations, the North Fork Shoshone River is managed by the Shoshone National Forest and has specific rules and regulations in place. For example, all boaters must have a valid permit, and equipment such as life jackets and helmets are required. Additionally, boaters are not allowed to camp within 200 feet of the river.

Overall, the North Fork Shoshone River is a challenging and exciting whitewater river run that requires skill and experience to navigate safely. Paddlers should be prepared for the river's class rating and specific rapids, and should follow all regulations put in place by the Shoshone National Forest.