Arroyo Seco Assessment of Health

For many mountain bikers, hikers and equestrians, the Arroyo Seco is the jumping off point for trail systems behind JPL, which have been closed to the public since the Station Fire. Well-known trails such as the Gabrieleno National Recreation Trail pass through the Arroyo Seco canyon. There are plans being considered for the Hahamongna Watershed Park, at the mouth of the canyon, for development, soccer fields, and a bike path.

The Los Angeles & San Gabriel Rivers Watershed Council invites you to attend a workshop on April 6th 1pm-5pm at La Casita del Arroyo. The Watershed Council is developing an indicator-driven tool for assessing the social, ecological and economic health of Southern California Watersheds. We are partnering with researchers from USC, UCLA, UC Davis, the US Forest Service and the California Office of Environmental Health and Hazard Assessment.

The Arroyo Seco Watershed was chosen by our project team and technical advisory committee as the location for a pilot application of the assessment tool. We are inviting stakeholders in the Arroyo Seco to comment on the indicators of health that have been selected. The workshop will include a presentation of the research to date, and break-out sessions where attendees can provide feedback. Please RSVP at this link:

Questions can be directed to Mike Antos (,  213-229-9954). This project is funded by the CA Department of Water Resources. We’d like to thank the City of Pasadena, Department of Public Works, Parks & Natural Resources Division, for providing the meeting location and for their support and assistance.

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