Prepare for Adventure

Learn more about Eaton Canyon’s natural history and ecology, then create a personal adventure based upon your interests.

A vintage photo of a truck driving down a dirt road

From the earliest Tongva-speaking peoples through yesterday's headlines, Eaton Canyon has been a fascinating place, marked by significant events and important discoveries. Some of the canyon's human history is well documented while other aspects are generally unknown. Let's focus on that.

A large mountain in the background

Eaton Canyon is situated within the south-southwest facing coastal slopes of Southern California, offering it a uniquely mild climate year-round. The San Gabriel Valley is considered to have a mediterranean climate characterized by hot, rainless, long summers and cool, damp, short winters.

A close up of a rock

Local rocks are primarily igneous and metamorphic. Minerals like feldspars, quartz, micas and hornblendes dominate Eaton Canyon. Common types of igneous rocks include Wilson Quartz Diorite, Lowe Granodiorite, Hornblende Gabbro, Granite Pegmatite and Milky Quartz. Metamorphic rocks found in the canyon include Muscovite Mica, Biotite Mica Schist and Gneiss.

bird on branch
Biology & Botany

Eaton Canyon contains elements of several plant communities including chaparral, coastal sage scrub, oak woodland and riparian growth. In addition, numerous species of birds, mammals, lizards, insects, arachnids and even two species of fish are verified canyon residents. Please respect Eaton Canyon’s biological and botanical diversity by not collecting specimens.


The centralized location of Eaton Canyon just 17 miles northeast of downtown Los Angeles makes the canyon within 30 minutes drive time of over 5 million Angelinos.

parking lots


Waypoints is a collection of interactive map photos documenting the location of various odds and ends throughout the canyon. The purpose of sharing these is to document features for present-day visitors and future generations of explorers.


Various governmental agencies have jurisdiction over portions of Eaton Canyon.

  • The lower ⅔ of the canyon below the Toll Road Bridge is the Los Angeles County Parks & Recreation
  • The upper ⅓ of the canyon below the Toll Road Bridge is the City of Pasadena Department of Water & Power
  • North of the bridge is the United States Forest Service
  • From the Mt. Wilson Toll Road to Henninger Flats is the Forestry Division of the Los Angeles County Fire Department

Latest Information from Other Sources

Both Los Angeles County Parks & Recreation and the Eaton Canyon Nature Center Associates maintain Web sites with varying content about Eaton Canyon Natural Area. Neither Web site includes information about the canyon north of the county park. Likewise, the Angeles National Forest Web site includes information about Eaton Canyon only north of the country park. Automatically updated news feeds from those Web sites, the Los Angeles County Fire Department and nearby search and rescue organizations are listed below.

RSS Los Angeles County Parks & Recreation Web Feed
RSS Eaton Canyon Nature Center Associates Web Feed
RSS Angeles National Forest Web Feed
RSS Los Angeles County Fire Department Web Feed
RSS Sierra Madre Search & Rescue Team Web Feed
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