[1] It is situated in the Ansel Adams Wilderness, on land managed by Inyo National Forest.

[2] Topographic relief is significant as it rises over 5,200 feet (1,600 meters) above Grant Lake in four miles which makes the mountain visible from Highway 395.

The mountain is named in memory of Washington Bartlett "Dusty" Lewis (1884–1930), Superintendent of Yosemite National Park for 11 years from 1917 through 1928.

[8] Most weather fronts originate in the Pacific Ocean, and travel east toward the Sierra Nevada mountains.

As fronts approach, they are forced upward by the peaks (orographic lift), causing them to drop their moisture in the form of rain or snowfall onto the range.