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  • Arroyo Seco Content BAnner

Department of Public Works

  • Welcome to the Arroyo Seco

    The Arroyo Seco, Spanish for “dry gulch”, refers to both the stream course and the canyon that spans eight miles through the western portion of the City of Pasadena. Surrounded by urban development, the Arroyo Seco supports thriving natural ecosystems that include several native plant communities and provides shelter, food and nesting sites for hundreds of wildlife species. Efforts are underway by the city and local community organizations to protect, enhance and restore these ecosystems. Affectionately known to locals as simply “the Arroyo”, the Arroyo Seco in Pasadena is protected parkland and open space with 22 miles of trails and myriad recreational opportunities. The Arroyo Seco was recently included in the National Register of Historic Places, placing it among the nation’s top cultural resources.

  • Recreation in the Arroyo

    Discover the Arroyo

    Affectionately known to locals as simply "the Arroyo", the Arroyo Seco in Pasadena is protected parkland and open space with 22 miles of trails and myriad recreation opportunities.

    There are things to do, places to visit, and beauty to be discovered in the Arroyo.

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  • The Natural Environment

    A Dynamic Ecosystem

    Positioned within an ever expanding urban landscape, the Arroyo Seco is crucial to maintaining the ecological health of the Los Angeles area.

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  • Arroyo Seco Planning & Projects

    Be a Part of the Process

    Caring for the Arroyo Seco and managing the resources of this natural landscape requires the collaboration of local and regional agencies, community organizations, residents, visitors, and friends of the Arroyo like you. 

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  • Sights and Sounds from the Arroyo

    A Gallery of Images & Media

    Images and media including a film prepared for the City of Pasadena featuring the Arroyo Seco.

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  • Culture, History, & Society

    The Birthplace of Pasadena

    The striking fruitful landscape of the Arroyo Seco has nourished and inspired those living near the Arroyo for centuries.

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  • Directions to Arroyo Seco Natural Park

    Located on the western side of Pasadena near CA-134 & I-210 freeways, many roads lead to the Arroyo Seco Natural Park. Three main entrances provide automobile access to the park and numerous trails along the eastern and western edges of the park provide additional access from neighborhoods and surrounding communities.

    Directions to Arroyo Seco Natural Park provided by GoogleMaps