The Upper Boxelder Canyon river run in Wyoming is a challenging Class IV+ section of water that should only be attempted by experienced kayakers and rafters. The run features technical rapids, tight channels, and numerous obstacles such as boulders, fallen trees, and steep drops. The best time to float this section of water is in the late spring or early summer when water levels are high and range from 500-1500 CFS. However, due to the challenging nature of the run, it is recommended to go with a guide or experienced group.

Weather today, A chance of showers and thunderstorms between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. Partly sunny, with a high near 68. South southwest wind 5 to 10 mph becoming northwest in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.