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Best trails in Hahamongna Watershed Park

601 Reviews
Explore the most popular trails in Hahamongna Watershed Park with hand-curated trail maps and driving directions as well as detailed reviews and photos from hikers, campers and nature lovers like you.
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Map of trails in Hahamongna Watershed Park
Park information
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Top trails (4)
#1 - Brown Mountain/El Prieto Trail
Hahamongna Watershed Park
moderateYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray Star(245)
Length: 11.7 km • Est. 3 h 50 m
This is a very popular mountain biking trail, so take caution if you are a hiker. It is important for all users to share the trail with others and help make your whereabouts known with bells, or using your voice.Show more
#2 - Arroyo Seco Trail
Hahamongna Watershed Park
moderateYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray Star(161)
Length: 30.7 km • Est. 9 h 42 m
#3 - Gabrielino Trail to El Prieto Trail Loop
Hahamongna Watershed Park
hardYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray Star(109)
Length: 22.0 km • Est. 6 h 30 m
Located in the Angeles National Forest, above the foothills in Altadena. Highlights: The trail starts just above NASA's Jet Propulsion Laboratory. Hazards: Poison oak and rattlesnakes.Show more
#4 - Devils Gate via Flint Canyon
Hahamongna Watershed Park
easyYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray Star(77)
Length: 12.4 km • Est. 3 h 5 m
Note: As of August 2020, users have reported that the Flint Canyon Trail is closed a mile in from Hempstead Road. If you'd like to hike around the reservoir, start at Hahamongna Watershed Park until the construction is completed. Equestrian/Hiking trail that starts from Cherry Canyon and winds through the neighborhoods of La Canada Flintridge and connects to Devil's Gate Reservoir and The Hahamongna Watershed Park. This hike begins from Hampstead Road at the Cherry Canyon Motorway. Cross Hampstead road and follow the well marked Flint Trail as in winds its way through various properties in the area. The trail crosses several residential streets untill it reaches Chula Senda Lane. Turn left and then make an immediate right on a private street named Woodfield Road (don't worry, trail access is allowed). After a bend you will link up with the trail again. After a little over a mile the trail drops down next to a small wooded creek that is hidden in the middle of suburbia. Continue along this trail as it parallels the freeway and then crosses under the street and then the freeway. You will emerge from the other side at the Devil's Gate reservoir.Show more