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Arroyo Seco Foundation



The Arroyo Seco Foundation (ASF) is dedicated to protecting and promoting the Arroyo Seco watershed. ASF advocates an integrated, harmonious approach to watershed and flood management, water conservation, habitat enhancement as well as 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 Projects include:

Arroyo Seco Watershed Restoration -- This comprehensive approach to mountain and urban watershed management is a partnership of ASF and and the many organizations of the Council of Arroyo Seco Organizations (CASO).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.Hahamongna Nursery - ASF grows and cares for native and California-Friendly trees and plants at our nursery.Volunteer Opportunities -- There are lots of ways to get involved in protecting and restoring the Arroyo Seco. ASF organizes periodic clean-ups, tree-plantings, water quality monitoring and other activities.

Our work is made possible by the generous contributions of time and resources of hundreds of local residents. We need your support to succeed. For more information or to get involved, please click here:

Mission: The mission of the Arroyo Seco Foundation is to preserve and enhance the Arroyo Seco from the San Gabriel Mountains to the Los Angeles River, reforest our region and promote environmental and cultural awareness of one of Southern California's greatest natural resources.
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