Clarks Fork Yellowstone
4. The Box
| Difficulty | V+ |
| Length | 23 mi |
| Avg Gradient | 89 fpm |
| Gauge | Clarks Fork Yellowstone River Nr Belfry Mt |
| Flow Rate as of 15 minutes | 1960 cfsabove recommended |
| Reach Info Last Updated | July 28, 2022 |
River Description
Shrouded in lore and mystery, the Box Canyon of the Clarks Fork Yellowstone is one of the definitive multi-day class V kayaking trips in North America. It is also one of the most dangerous. The third deepest canyon in the United States and by far the least accessible, the Box is home to uncountable sieves, undercuts, and powerful cascades on the grandest of scales. Note that this run radically changed with severe 2022 flooding.
In places, sheer granite walls 1200' high rise dramatically from the tumbling class V waters. Scouting from shore, one cannot contain the spectacle at a glance. It is simply too immense. The roaring waters and solemn stone are in perfect harmony here, singing of a secret few have shared. It is like no other place on earth.
The rapids found deep in the gorge are pure bliss for the intrepid kayaker. Steep and demanding, the physical challenges coupled with the unparalleled aesthetics of the canyon itself leave little to be desired and the knowledge that escape on foot is impossible for nearly the entire length of the run adds a level of intensity rarely found in kayaking.
Though hiking around the numerous mandatory portages is painstaking work, it is well worth the effort as each offers a surreal view of powerful, raw elements churning and crashing in a humbling display of ferocity. The Box is an epic in all regards. Its grandeur will forever elude eloquence and imagery.
In August, 2003, a group of seven paddlers, including myself, dropped below the 'last chance' eddy above the sixth and final portage. Coming down an easy slide to a blind corner, we realized our mistake too late. All 7 boaters were flushed into a terrible, unrunnable cascade laced with caves, sieves, and undercuts. Daniel Louis Crain, a great man, was lost. Though several members of the team had not been through the Box before, three of us had made the portage a combined 5 times. Not one of us remembered the spot� The Clarks Fork Box is not to be
...River Features
Put In
Take Out
Trip Reports
Log in to add a reportJust a photo. Worth the hike in for the view.