Webb Canyon is a glacial canyon in Grand Teton National Park in Wyoming near the northern reaches of Jackson Lake. Extending about 9 miles south of Owl Peak, it runs through a broad U-shaped valley carved by ice. The canyon formed as glaciers retreated at the end of the Last Glacial Maximum around 15,000 years ago. Moose Creek now flows through much of the canyon, and the Webb Canyon Trail follows it along the canyon’s length to Moose Basin Divide.