Arroyo Seco, Canyon and seasonal river in Los Angeles County, California.
The Arroyo Seco extends 24.9 miles from the San Gabriel Mountains through Pasadena before joining the Los Angeles River near downtown Los Angeles.
Native American tribes, particularly the Tongva Indians led by Chief Hahamog-na, inhabited the region until Spanish explorer Gaspar de Portolà arrived in 1770.
Multiple parks and recreational facilities along the Arroyo Seco banks provide spaces for hiking, cycling, and community gatherings throughout Los Angeles County.
The Devil's Gate Dam, constructed in 1920, manages water flow and prevents flooding from the mountain watershed during heavy rainfall seasons.
The Jet Propulsion Laboratory, established at the mouth of Arroyo Seco, developed into a primary center for space exploration technology research.
Location: Los Angeles County
GPS coordinates: 34.15210,-118.16600
Latest update: May 27, 2025 06:52
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