The Arroyo Seco Foundation

Charles LummisThe Arroyo Seco Foundation (ASF) was founded by Charles Lummis more than one hundred years ago to preserve and promote the Arroyo Seco, one of Southern California's greatest natural treasures.

After a lapse of many decades, the Arroyo Seco Foundation was revived in 1989 to continue that vision. Since then we have planted several thousand native trees in the Arroyo, participated in and led major Arroyo planning efforts, educated the public about the riches of the Arroyo, and most importantly worked to restore and enhance the natural splendor of the Arroyo for future generations.

ASF has brought over $25 million in funding into the Arroyo Seco Watershed.

ASF is a community-based 501(c)(3) nonprofit organization. We advocate an integrated, harmonious approach to watershed and flood management, water conservation, habitat enhancement, and the expansion of recreational opportunities. Through action projects, recreation, and environmental awareness activities, ASF strives to involve the residents and organizations in our region in this tremendous enterprise. As a member of the California ReLeaf tree-planting network, ASF works to reforest the Arroyo Seco, the San Gabriel Mountains and the neighboring urban landscape with native shrubs and trees.

The activities of the Arroyo Seco Foundation enable local residents and businesses to become directly involved in the restoration of the Arroyo Seco and in the recreational and environmental opportunities available.

Major Programs for 2015 include:

  • Arroyo Seco Canyon Project (ASCP)

    ASCP is a large-scale partnership project between the City of Pasadena and ASF. See the ASCP webpage for more information.
  • Arroyo Seco Stream Team

    Our work is made possible by the generous contributions of time and other resources by community members. The Stream Team is ASF volunteer corps.
  • Tours & Education

    An important part of ASF's mission is to educate the public about water managment in the watershed. ASF staff and volunteers lead informative walking tours of the Arroyo Seco, as well as outreach to student groups.
  • Arroyo Seco News

    This lively email news and discussion groups offers a forum for Arroyo afficionados to stay up-to-date and spread the work about important Arroyo issues, projects and events.
  • Monitoring Arroyo Planning Efforts

    A multitude of planning efforts are now underway to upgrade and transform the Arroyo. These include the development of a master plan for the Angeles National Forest, Pasadena's Arroyo Seco EIR, South Pasadena developments, Debs Park, Confluence Park planning and other efforts.
  • Tours and Educational Events

    ASF offers a variety of types of tours of the Arroyo Seco and a series of educational programs about the habitat, culture and history of the Arroyo Seco.