Hahamongna Watershed Park

Hahamogna Watershed Park is located at the Southeast corner of Oak Grove Drive and Foothill Boulevard. This 1300-acre park in the Arroyo Seco extends from Devil's Gate Dam north into the San Gabriel Mountains. Located near Jet Propulsion Laboratory between La Canada High School and Altadena in Northwest Pasadena.

Recreational Opportunities

• Athletic field
• 24-hole frisbee golf course
• Bridle trail
• Bicycle trail
• Hiking trails
• Picnic areas
• Barbecue pits
• Restrooms
• Drinking fountains

Reserve picnic or frisbee areas here.

Trails

1. Devil's Gate via Flint Canyon - 7.7 mile loop. Equestrian/hiking trail. Lots of parking.
2. Brown Mountain/El Prieto Trail - 7.7 mile loop. Popular mountain biking trail. Lots of scenery.
3. Gabrielino Trail to El Prieto - 14.5 miles. A lot of water crossing.
4. Arroyo Seco Trail - 20 miles. Beware of poison oak and rattlesnakes. Long pants are recommended.