Here are links to info about the ski and snowboard resorts, mountains, areas, hills, etc. in Arizona. There's everything from the famous Arizona Snowbowl to Mt. Lemmon to the Elk Ridge Ski and Outdoor Recreation Area (formerly Williams Ski Area).
The ski areas that I've got data (and some trail maps) in place for are listed in blue below (you can also click on their names on the map above):
