Arroyo Seco Foundation (Los Angeles, CA)


  • Name:Tim Brick
  • Title:Managing Director

Organization Address

  • Organization Name:Arroyo Seco Foundation
  • Address:570 W. Ave 26 #450
    Los Angeles, CA 90065
    United States

Organization Phone

  • Main phone:323-405-7326

Organization Web

User Email


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  • Mission:
  • Our mission is to preserve and enhance the Arroyo Seco River and its watershed through education, community involvement, improvement projects, and advocacy. 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.

  • Overview:
  • Arroyo Seco Foundation works to reverse the degradation of the Arroyo Seco ecosystem and assure a sustainable environment, habitat and water resources for wildlife and people in our region. Human activity has damaged much of natural resources in the Arroyo Seco, including wildlife, plant life and water resources. Dams, the flood control channel lining most of the urbanized stream, roads, buildings and extensive paving have destroyed habitat and reduced local water capacity. Contamination and over-pumping have degraded local groundwater resources. Habitat has been severely degraded, as wetlands and riparian areas have been altered, channelized and destroyed. Several riverine and upland ecosystem communities are imperiled, including the rare Riversidian Alluvial Sage Scrub, Coastal Oak Woodland, and Southern Willow Scrub. ASF strives to restore a more sustainable balance by implementing the principles of integrated regional water planning.

    Conservation and reducing per-capita water consumption is an important first step we advocate through our Watershed Coordinator. ASF will assist native species to thrive with ongoing stream and habitat restoration projects. We have been able to restore major areas of the Arroyo Seco stream and bring back native fish to the Arroyo. Hundreds of native Arroyo chub swam in the stream near the Rose Bowl thanks to the first native fish restoration in the LA River system in 2008.We are working with Pasadena Water & Power to reduce the negative impacts on fish caused by their intake structure, and to remove an outdated facility acting as a stream barrier. We have found that educating young people and adults about fish and birds is an effective way to enhance their understanding of the value of the watershed. Involving volunteers in invasive plant removal and stream restoration are other effective activities we organize and promote.

    ASF has made an organizational commitment to long-term comprehensive watershed management and to play a key role in coordinating this in the Arroyo Seco Watershed. Major current projects for ASF include the development of a River Parks network, coordination of planning efforts, implementation of the Arroyo Seco Canyon Project, public education and volunteer activities, and water quality monitoring. Projects in planning phases include dechannelization of the Lower Arroyo, a trail network connecting the parks along the Arroyo, and wetland and habitat restoration projects.

    ASF takes a leadership role in regional planning, including the Integrated Regional Water Management Plan for the Upper LA River, the Arroyo Seco Watershed Assessment, and the USACE’s Arroyo Seco Ecosystem Restoration Feasibility Study. ASF participated in the City of LA’s LA River Revitalization Program and the USACE’s LA River Ecosystem Restoration Feasibility Study (ARBOR Study). In September 2013 the ASWC organized the LA River Rally to support the most comprehensive alternative from the ARBOR study with the help of 20 community sponsors. ASF helped shape the City of LA's Cornfields Arroyo Seco Specific Plan, providing guidelines for a low-impact, water-sensitive community at the confluence of the Arroyo Seco and the LA River, conducting outreach to the disadvantaged communities of Northeast Los Angeles for this plan, involving more than a dozen schools and 1500 school children in those neighborhoods.

  • History:
  • The 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. The Foundation was revived in 1989 to continue that vision and has planted thousands of native trees, participated in and led major Arroyo planning efforts, educated the public about the riches of the Arroyo, and worked to restore and enhance the natural splendor of the Arroyo for future generations. ASF brought over $25 million in funding into the Arroyo Seco Watershed since 1989, and will continue to leverage our modest organizational funding into larger results for the watershed.

    Fifteen years of consistent effort and cooperation have made the Arroyo Seco Watershed an important model of watershed management in Southern California. The work began with the Arroyo Seco Watershed Restoration Feasibility Study (ASWRFS), initiated by ASF in 2000 and finalized in 2002. The technical advisory committee for that study was transformed into the Council of Arroyo Seco Agencies (CASA) and meets quarterly. The stakeholder group became the Council of Arroyo Seco Organizations (CASO), which also meets regularly. The Arroyo Seco Watershed Coordinator program was initiated in 2004 to implement the recommendations of AWRFS and to facilitate watershed management.

    Though long celebrated as one of the most beautiful streams and canyons in Southern California, the Arroyo Seco has not escaped widespread damage caused by human impact. The 2006 Arroyo Seco Watershed Management & Restoration Plan (ASWMRP) states it well: the channelization of the Arroyo Seco “had a profound effect on the natural character of the Arroyo, fragmenting open space, disrupting habitat, changing the natural hydrological system of the river, and via these changes and the associated urbanization of the watershed severely reducing the quality of the arroyo’s waters.” The Arroyo Seco Watershed was further devastated by the 2009 Station Fire, which scorched the mountainous Upper Arroyo Seco, damaging water quality and causing severe debris flows, invasive species expansion, and wildlife habitat shrinkage.

    The ASWRMP concludes that a number of factors make the Arroyo Seco one of the best candidates for watershed management and stream restoration in Southern California. These factors include strong community and political support, public ownership of stream-adjacent land, the presence of historic structures and strong cultural institutions, and the evolving attitude about flood and watershed management among the public agencies responsible for managing the area. It is clear that the Arroyo Seco Watershed represents an outstanding opportunity to demonstrate a collaborative, integrated approach to the care and management of vital natural resources for the Los Angeles River Watershed and all of Southern California.
    The Central Arroyo Stream Restoration Program, completed in 2008, is testament to the success of local watershed efforts. This $2.5 million restoration project near the Rose Bowl improved stream conditions, water quality, native habitat and trails. Best management practices for stormwater management including permeable paving and bioswale islands were installed in the parking lot as well as trash inserts in storm drains throughout western Pasadena. The highlight of the project was bringing back the Arroyo Chub, a native fish, to the stream. This is the first native fish restoration in the Los Angeles River system. The Central Arroyo Stream Restoration Program was given the California Public Officials for Water and Environment Reform (POWER) Stewardship Award and the Nahai Award by the Regional Water Quality Control Board.
    The recently completed Arroyo Seco Watershed Assessment, sponsored by the Arroyo Seco Foundation, has recommended five restoration projects and watershed-wide programs that can help restore the natural hydrological functioning of the watershed, better manage and conserve water resources, improve water quality, restore, protect, and augment habitat quality, and improve recreational opportunities and open space. The assessment provides a framework for future integration of transportation, energy, water resources, and restoration concerns in the development and rehabilitation of the Arroyo Seco Watershed which has been used by the USACE in the development of projects during their Arroyo Seco Watershed Feasibility Study.

  • Year established:1989
  • Endowment:Unknown


  • Executive / Trustee board size:6
  • Advisory board size:
  • Staff size:3


  • Organization type:Grantseeker
  • Country of registration:United States
  • Tax Determination Letter:Received Determination Letter
  • IRS Section:501(c)(3)
  • IRS Subsection:None
  • Tax ID:954328068

Other Organization Web

IRS Business Master File Information

  • EIN:954328068
  • Organization Name:ARROYO SECO FOUNDATION
  • Sort (Secondary) Name:
  • Care Of Name:
  • Organization Address:570 W AVENUE 26 STE 450
  • Organization City:LOS ANGELES
  • Organization State:CA
  • Organization Zip:90065-1011
  • Group Exemption Number:0000
  • Subsection Code:03
  • Classification Code(s):1
  • Subsection/Classification Desc.:Charitable Organization
  • Affiliation Code:3
  • Ruling Date:November, 1991
  • Deductibility Code:1
  • Foundation Code:15
  • Foundation Code Desc.:Organization which receives a substantial part of its support from a governmental unit or the general public 170(b)(1)(A)(vi)
  • Activity Code(s):995, 353
  • Activity Code Desc.(s):Described in section 509(a)(2) of the Code, Soil or water conservation
  • Organization Code:1 (Corporation)
  • Exempt Org. Status Code:01 (Unconditional Exemption)
  • Tax Period:December, 2016
  • Filing Requirement Category:01 (990 (all other) or 990EZ return)
  • Accounting Period:December
  • NTEE Code:C60
  • Asset Amount:$163,721
  • Asset Code:4 ($100,000 - $499,999)
  • Income Amount:$223,125
  • Income Code:4 ($100,000 - $499,999)
  • 990 Revenue Amount:$223,125
  • Last Updated:2/23/2018 6:26:24 pm

This information is directly from the IRS Exempt Organization Business Master File at Exempt Organizations Business Master File Extract. This information is not under the control of the Common Grant Application and is collected and compiled and can only be changed by the IRS.