Arroyo Seco Foundation  

Here's the latest Arroyo News: JANUARY CURRENTS

2018 In the Arroyo

Big events this year are going to shape the Arroyo of the future. Come to the Arroyo Seco Quarterly Meeting to learn about the key initiatives and how you can participate in them.

Back to Court

Judge James Chalfant has now authorized the County Flood Control District to move ahead with a reduced size Big Dig program in Hahamongna Watershed Park. Despite the Supervisors' recent action to scale back the program in November, there are still big problems with the Big Dig. ASF and Pasadena Audubon are still working with Supervisor Barger to reduce the negative impacts.

Help Grow

Would you like to be part of the Hahamongna Nursery Team? You can learn about native plant identification and how to propagate and tend California's most venerable and spectacular plants. They are a precious legacy for future generations. Send an email to

The battle to Save Hahamongna has been a long and bitterly fought one. Click on the link below to review the updates on the campaign against the Big Dig and witness citizen power in action.

Thank you for your support and congratulations!

Big Dig Updates

Native Fish in the Arroyo — Can We Bring Them Back?

The answer, of course, is Yes! While there are numerous barriers and problems, the conditions in many parts of the Arroyo watershed are excellent for native fish including Rainbow Trout and Steelhead. ASF's meeting last July at the Pasadena Public Library generated a lot of interest and discussion about native fish.


One Arroyo

Pasadena Mayor Terry Tornek's Arroyo Advisory Group has been meeting for close to a year now. There's a lot of interest in what recommendations they will make to change the way the Arroyo is viewed and managed. Some of the questions will be answered when the group makes a report to the Pasadena City Council on Monday, February 5th.

Want to see a beautiful native plant garden? Check out the one this crew planted at Linda Vista Library, 281 Bryant St, Pasadena, CA 91103.

Arroyo River Parks
Restoring a Living River

Here's an innovative approach for the future that will restore the Arroyo Seco by integrating the river into the parks and the parks into the river.

Why Not a Complete San Gabriel Mountains National Monument?

Now that the Trump Administration review of National Monuments seems to be winding down, it's time to again raise an issue about our local monument. By a mysterious process that no one will explain, the Arroyo Seco and the southwest corner of the Angeles National Forest were eliminated at the last minute when the San Gabriel Mountains National Monument was announced. It's a shame because many of the most treasured and historic sites in the San Gabriel Mountains are contained in the territory that was not included.

Congresswoman Judy Chu has now proposed legislation that would expand the boundaries of the national monument to include all of the treasures of the Angeles National Forest.


Arroyo Canyon Project

The Canyon Project is an innovative program to improve water resources and environmental conditions in the Arroyo co-sponsored by the Arroyo Seco Foundation and Pasadena Water & Power Department. As the result of a legal challenge, the project is now undergoing further environmental review.