Arroyo Seco

Arroyo seco    Pasadena    California



the effort

What is the One Arroyo effort?

The Arroyo Seco is Pasadena's great outdoor space, used by millions each year for recreation and enjoyment.  Even though the Arroyo itself has seldom been conceived or designed as one continuous space, from the headwaters in the North to the tributary waters in the South, its natural habitats, resources and historic sites are unlike any other and enthusiastically enjoyed by those who live, work and visit the city.

The One Arroyo effort endeavors to bring awareness to the work by the Arroyo Advisory Group (AAG), and others, to restore the legacy of Pasadena's historic Arroyo Seco and unite all three areas of the Arroyo- Hahamongna, Central Arroyo and Lower Arroyo under a singular vision.

the vision

Vision for the Arroyo

The AAG has developed a draft vision statement for the Arroyo.  This vision will be refined as the group conducts its outreach to the community.

"Pasadena's great outdoor space, the historic Arroyo Seco, will become One Arroyo.  From the headwaters in the north to the tributaries in the south, its natural habitats, resources, and historic sites will be preserved, enhanced, and connected by an extraordinary end-to-end trail system, all anchored by a central hub."


the concept

One Arroyo Trail Concept

To advance the One Arroyo vision for the Arroyo Seco, the AAG is recommending and pursuing funding for a concept study to create an end-to-end trail system throughout the Arroyo.  Conceptually, the unified trail would encompass trails elements, repair and restore trail connections, and make recommendations to enhance the overall trail experience, be that landscape, facilities like restrooms, consistent and appropriate signage, retainage, etc.


about aag

About the Arroyo Advisory Group

The City Manager and the General Manager of the Rose Bowl Stadium selected an advisory group of Pasadena leaders who share:  a passion for the Arroyo Seco, financial acumen, and who are well-versed in the history and values of Pasadena.

Over the next several months, the AAG will:

  • articulate a single vision statement to serve as a touchstone for the effort

  • engage with, and receive public input from, the Pasadena community about the effort

  • explore sustainable means of funding for the Arroyo

  • identify a project or projects that capture the community's interest and further the vision


Opportunities to Connect

The AAG will be conducting extensive outreach throughout the City over the next six months and looks forward to connecting with you at a number of meetings, events, associations, etc.

Missed our One Arroyo Community Outreach Kick-Off meeting on July 25, 2017?  Check out video footage from the event here.

For a full list of upcoming engagement events and activities, click here.


Learn More about 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. 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.

For more information, click here.

“Everybody needs beauty as well as bread, places to play in and pray in, where nature may heal and give strength to body and soul alike.”
— John Muir
Rim of the Arroyo.jpg

Contact AAG

The AAG is interested in hearing your ideas and feedback. Feel free to complete the attached contact form.  If you'd like to sign up for future news and updates regarding the "One Arroyo" effort, please complete the email list sign-up form at the bottom of the page.  We look forward to hearing from you!