Mount Waterman is a ski area on Waterman Mountain in the San Gabriel Mountains of the Angeles National Forest in Los Angeles County, California. The area is located on California State Route 2, the Angeles Crest Highway, and reaches a height of 8,030 ft (2,450 m) with an overall vertical drop of 1,030 ft (310 m). Mount Waterman is leased under a special use permit from the Forest Service. Skiable terrain is distributed as: 20% beginner terrain, 20% intermediate, and 60% advanced.
Mount Waterman facilities include a ticket booth at the base at 6,900 ft (2,100 m), warming hut, restrooms, ski school, ski patrol (first aid), ski rentals–though currently inactive-and a heliport halfway up the mountain. Near the top there is a 5 million gallon, tadpole-filled reservoir for a future snowmaking system, and at the 8,036 ft (2,449 m) summit, there is a plateau with large boulders. Waterman has three double chairlifts to serve its ski trails. Mount Waterman currently has no snowmaking equipment.
There are steep backcountry ski trails on the east and northwest sides of the mountain, though skiing these trails is not recommended since it is not patrolled. During heavy El Niño snowfall in 1998 the County Sheriff ticketed some backcountry skiers who entered these areas. Several skiers and snowboarders went missing and had to be rescued that year.