Arroyo Seco Ecosystem Restoration
More than two decades ago, Los Angeles County Flood Control District and the US Army Corps of Engineers began a program to restore stream and habitat conditions in the Arroyo Seco. The Corps lost interest in the program seven years ago, but now the Flood Control District, at the insistence of Supervisor Kathryn Barger, is starting up the program again.
The Arroyo Seco cities (LA, Pasadena, South Pasadena, La Canada Flintridge, Altadena) and stakeholders will be partners in the program that offers great hope for vital restoration programs in the most important tributary of the Los Angeles River.
We'll keep you informed of developments. If you are interested, let us know by sending a message to stewards@arroyoseco.org
Q: What about Wetlands in the Arroyo?
Pasadena's "Stormwater Program" neglects the importance of wetlands and connectivity for habitat and wildlife in the Arroyo Seco watershed. Instead of planning nature-based solutions, Pasadena and South Pasadena are proposing little bandages on a severly wounded watershed and stream management system. Cheap water for a golf course. Another round of one hundred year mistakes.
2025 Trout Report
Here's the 2025 trout report from the California Department of Fish and Wildlife. This year's count (3,815) is impressive, given how dry the year has been.
Trout Reports
Did you know that the rainbow trout is listed as an endangered species by both the federal and state government?
An Arroyo Steward
Dianne Philibosian has been an Arroyo steward for many decades. In the 1990s, she was president of the Arroyo Seco Foundaion when the low-flow streams were established in Pasadena's Lower Arroyo and Pasadena initiated the Master Plan process. More recently, she has served on the board of Stewards of the Arroyo Seco and the Arroyos and Foothills Conservancy. She was devoted to protecting and restoring the natural character of the Arroyo Seco.
We will aways remember her.
Three Vital Hotspots in the
Arroyo Seco Restoration Corridor:
Bring your camera or phone to share in the Arroyo Arc Bioblitz.
Stormwater Capture and Use Workshop
Turning Local Stormwater Successes into Solutions for California’s Water Future
Tuesday, November 18, 2025
Webcast: https://video.calepa.ca.gov
The State Water Resources Control Board invites you to a staff-led public workshop focused on how California can better capture and use urban stormwater. Join us to learn about successful projects, discuss overcoming barriers, and help shape the future of stormwater management in California.
Questions? Email us! STORMS@waterboards.ca.gov |
Something to Ponder: Why concrete might be doing more harm than good in the fight against flood risks"Whether it's dams, drains, aqueducts or seawalls, much of the modern world was built on the idea that we can control water. But concrete infrastructure around the world is failing amid unpredictable and often extreme levels of precipitation. Inspired by ancient monsoon cities, landscape architect Kongjian Yu says the solution lies in working with water and using nature as a sponge." |
We would like to know what you are thinking: stewards@arroyoseco.org