Arroyo Seco Foundation

The Local Tree Crisis

The trees in our region have been under extraordinary stress in recent years. Five long years of drought have weakened many of trees and made them more susceptible to persistent pests like the Polyfaguous Shot Hole Bore which is spreading rapidly and threatening new trees. But is the solution to simply cut down threatened trees and hope for the best? Pasadena, chopped down seven ancient oaks in Hahamogna Watershed Park on Christmas Eve and has plans to remove hundreds of trees especially in the natural lands of the Arroyo Seco. Pasadena Public Works officials call it necessary maintenance, but their actions are destroying the character of the rare oak grove in Hahamongna and of the Arroyo Seco itself.

We call on the City of Pasadena to:

  1. Conduct a public forum on habitat and tree preservation,
  2. Begin a program of removing invasive species that are fostering the pests and endangering the trees, and
  3. Develop a plan to restore invaluable habitat in the Arroyo after five long years of drought.

Witness the Devastation Wrought by the Christmas Eve Oak Grove Slaughter

Nick Hummingbird's Photos
Marnie's Photos
Star-News Article

The 2015 Arroyo Verde Awards were held December 13, 2015 at Los Angeles County Fire Camp #2 at the Northwest Corner of Hahamongna. Congratulations to all the awardees and those who came to celebrate the Arroyo!

The event couldn't have been a success without the wonderful dishes everyone brought, and heartfelt speeches each awardee made. We look forward to 2016, and keep in mind those who make an impact in 2016 for next years nominations

No Big Dig! Lawsuit Update

There have been several changes regarding the court hearing on the lawsuit regarding LA County Flood Control District's program to excavate 2.4 million cubic yards of sediment from behind Devil's Gate Dam in Hahamongna Watershed Park and to truck it to distant landfills. There is now a new judge and the initial hearing has now been backed up until some time in the late Spring or early summer of next year. wsuit, filed by the Arroyo Seco Foundation and Pasadena Audubon Society last December to challenge the enormous impacts of the County's program on Hahamongna and the surrounding neighborhoods including west Pasadena.


Haha Lawsuit: What's It All About?

Here's the news briefing explaining the Hahamongna sediment lawsuit filed by the Arroyo Seco Foundation and the Pasadena Audubon Society against the Los Angeles County Flood Control District sediment mining and trucking operation from behind Devil's Gate Dam in Hahamongna Watershed Park. ASF's Tim Brick, Laura Garrett, Conservation Chair of PAS and attorney Mitchell Tsai are featured in the video explaining their concerns and the issues that will be contested in the No Big Dig lawsuit.

The Trucks Are Coming! 50,000 a Year!

County Releases Devastating Hahamongna Sediment Trucking Plan

LA County Flood Control District's sediment removal program for Devil's Gate Dam in Hahamongna Watershed Park is deeply flawed. It's an old-style mining and trucking operation with devastating impacts on the nature and character of Hahamongna Watershed Park and on the surrounding communities.

Arroyo Seco 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.


Arroyo Seco Excised from San Gabriel Mountains National 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 from the newly announced San Gabriel Mountains National Monument.


Introducing Stewards of Public Land

Pasadena Council Says Archers Only!

We were disappointed by the Pasadena City Council vote to cede a large portion of the Lower Arroyo Park to Pasadena Roving Archers and other archers in a vote early in the morning of February 3, 2015. After a five hour public hearing and discussion, the council split 5-3.

The archers loudly proclaimed that the new agreement is not for "exclusive use" because anyone can still walk near the archery range, but in the future all other users will be warned by signs and barriers not to stray into the large archery range because in the judgment of the City Council it is too unsafe to allow the public to enjoy the area. All non-archers will be restricted to the dry, barren path lined by a chain link fence near the flood channel. No one, however, goes to the Lower Arroyo to walk near the flood channel.

As a conservation organization, ASF's vision is for a restored Arroyo Seco River flowing through a nature preservation area. Archers can fit into that vision, if proper safety restrictions are applied and if the public, at least at some times, has access to one of the most beautiful spots in the urban Arroyo Seco.

ASF urges you to visit the Steward's website for more details.

Here's Something Real You Can Do About the Drought - Click Here: