Eaton Canyon is part of a natural preservation area in Pasadena, California. The actual canyon begins at Eaton Saddle in the Mount Markham and San Gabriel Mountains. San Gabriel Peak borders and helps form the canyon. The natural preservation is also part of Angeles National Forest. The canyon was formed by the Rio Hondo River, which flows into the Los Angeles River.
Eaton Canyon is named after Judge Benjamin Eaton. He lived in a ranch house in 1865 near Eaton Creek. Fair Oaks Ranch House can still be visited today. Visitors often go to Eaton Canyon Nature Center in order to learn about the canyon, as well as visit it. There is also a trail head at Mount Wilson Toll Road to walk through the canyon.
Landmarks in the Canyon consist of Eaton Canyon Natural Area Park near the foothills of the San Gabriel Mountains. The boundaries for this park are Rancho San Pascual and Rancho Santa Anita. Eaton Canyon Falls is worth a hike. The falls have a fifty foot drop near a bridge. The water flows into a round "mirror" pool. It is a bit difficult to climb to the more secluded sections of the waterfall, but worth it in order to see the waterfall.