Herd Creek is a popular river run in Idaho that is known for its exhilarating rapids and scenic beauty. The ideal streamflow range for this river run is between 500-1500 cfs, and it is rated as a class III-IV run. The segment mileage of the river run is approximately 9 miles, and it features several challenging rapids that require advanced paddling skills, including the "Toilet Bowl" and "Jaws." Other notable features include scenic waterfalls and deep pools that are ideal for swimming and relaxation.

In terms of specific regulations, it is important to note that Herd Creek is located within the Frank Church Wilderness Area, which means that certain regulations must be followed to protect the natural environment. Visitors are required to obtain a permit from the Forest Service before embarking on the river run, and they must pack out all trash and waste to leave the area pristine for future generations. Additionally, boaters are required to use only lead-free fishing tackle and to avoid disturbing wildlife and vegetation along the riverbank.

Overall, Herd Creek is an exciting river run that offers a unique outdoor experience for adventurous paddlers. While it is important to follow regulations and safety guidelines, the rewards of this challenging and beautiful run are well worth the effort.