March 2025
Here's How the Arroyo Seco Fared
in the Eaton Fire
The ferocioius flames of the Eaton Fire stalled when they reached the Arroyo Seco. While canyons and neighbohoods to the east were devastated, Millard, the last mountain tributary, was the only part of the Arroyo stream that suffered damage, amounting to 8% of the total watershed area.
This image illustrates the western edge of the burn area. Click on the image to view the entire burn area of the Eaton Fire.
Check Out the Wonderful South Pasadena Nature Park - Saturday, March 29th
South Pasadena will host a free Sustainability Fair on Saturday, March 29 from 1 - 4 pm. Expect exhibits and tips from green-living experts, a plant swap, a garden tour, a native plant gardening talk, and more.
The event will take place at the Arroyo Seco Woodland and Wildlife Park, a true Arroyo treasure. Parking will be available on Pasadena Ave. and at the Arroyo Seco Golf Course parking lot. For cyclists, South Pas Active will be hosting a free bike valet at the Golf Course parking lot.
Have you heard about the Los Angeles River California Environmental Flow Framework (CEFF) Project?
CEFF is convening watershed stakeholders over a 20-month structured decision-making process culminating in the development of flow recommendations for LA River. Stewards of the Arroyo Seco is working with the Santa Monica Mountains Conservancy/Mountain Recreation and Conservation Authority (SMMC/MRCA), City of Los Angeles Sanitation, LA Department of Water and Power (LADWP), and dozens of other agencies and organizations to align the management goals driving the many policies, programs, and plans that will influence or rely on LA River flows and will address flow influences and needs across themes of biodiversity, cultural/tribal uses, flood control, recreation, urban cooling, water quality, and water supply.
How does the Arroyo Seco fit into the picture? Well, one of the key goals of the program is to restore native steelhead trout to the LA River, and the Arroyo Seco is where that will occur.
LA River Flows
Caltrans Solicits Your Comments: Arroyo Seco Parkway Improvements?
Caltrans is proposing bridge rail upgrades on the Arroyo Seco Parkway (SR-110) at the Ave. 43 Ramp Bridge and at Arroyo Seco Channel Bridge in the cities of Los Angeles and South Pasadena to improve operations and safety and upgrade assets to current standards. The Draft Initial Study/Environmental Assessment can be accessed here. Public comments should be submitted by March 21 to sr110bridgecomments@dot.ca.gov.
Want To Restore a Living River in the Arroyo Seco?
Stewards of the Arroyo Seco wants to restore as much of the natural hydrology and character of the Arroyo Seco as much as possible. Given the spectre of future floods, fires, and droughts, it's the best way to promote biodiversity and resilience.
If you want to get involved, please let us know at stewards@arroyoseco.org