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Santiago Creek Greenway Alliance 

Working Toward a Greener Creek

Who We Are

A Public Benefit Nonprofit 501(c)(3)

We are a group of volunteers dedicated to improving public use of the Santiago Creek.  The Santiago Creek begins in the mountains above Irvine Regional Parks in the City of Orange and flows through Villa Park and Santa Ana to the Santa Ana River.  From the moment we started our work in 1991, we understood that by working together we could achieve our mission to improve the beauty and access to Santiago Creek.  


What We Do

Our Mission is to create a greenway and trail system along the general course of Santiago Creek and to preserve and enhance its ecological scenic, historical and recreational resources.



Political Action to Support the Creek

Learn More

Creek Cleanups 

Learn More


See below for some upcoming and recurring events

California Coastal Cleanup Day Sept 23, 2023

We are once again hosting creek cleanup stations at Hart Park and Grijalva Park as part of the annual state wide initiative by the California Coastal Commission to clean up our beaches and rivers throughout California.  Meet at Hart Park or Grijalva Park at 9-11am on Saturday September 23, 2023.  Please wear sturdy closed shoes and trash bags will be provided.

Monthly Work Days

Join us as we work in the Creek to pick up trash, pull weeds, remove invasive plants, water new seedlings, and sometimes even plant new trees and shrubs along the creek.  We meet once a month on the third Saturday from 9-11am. Location varies.  Contact us to RSVP and find out where on the creek we will be working this month!

Group Events

We are happy to host a work day to plant trees and work in and around the creek.  We have worked with scouting troops, school groups, and company sponsored events.  Contact us to learn more and schedule a fun and rewarding day planting trees and working in the creek.

  • Annual Creek Cleanup Day
    Annual Creek Cleanup Day
    Sat, Sep 23
    Hart Park
    Sep 23, 9:00 AM – 11:00 AM
    Hart Park, 701 S Glassell St, Orange, CA 92866, USA
    Sep 23, 9:00 AM – 11:00 AM
    Hart Park, 701 S Glassell St, Orange, CA 92866, USA
    Come pick up trash from the creek to keep it out of our rivers and oceans!


All donations are tax deductible.  Thank you for supporting our efforts to improve the Santiago Creek!

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Navigating in Woods