Topanga Lagoon Restoration Efforts Move Forward
Community invited to weigh in on restoration plans following the Palisades Fire
The Topanga Lagoon Restoration Project is composed of three distinct areas: Topanga State Parks managed by California State Parks; Pacific Coast Highway and Topanga Canyon Boulevard managed by Caltrans, and Topanga Beach managed by Los Angeles County Department of Beaches and Harbors. Image shows visualization of an expanded lagoon and beach facilities pulled inland for retreat. Source: Resource Conservation District of the Santa Monica Mountains.
LOS ANGELES COUNTY, CA – Partners of the Topanga Lagoon Restoration Project will host a public meeting on Sunday, May 31, from 1:30 to 3:30 p.m. at Pierce College in Woodland Hills to share updates on ongoing restoration and design efforts for one of Southern California’s last remaining coastal wetlands.
The 2025 Palisades Fire directly impacted the Topanga Lagoon ecosystem and nearby visitor-serving areas associated with Topanga Beach and lower Topanga State Park. During the meeting, project partners will provide updates on efforts related to lagoon restoration, the Caltrans bridge replacement, and the Los Angeles County Department of Beaches and Harbors Visitor and Emergency Services facilities at Topanga Beach. Community feedback gathered during the meeting will help inform ongoing planning efforts for the lagoon’s future.
Community members will have an opportunity to share their perspectives and personal connections to Topanga Beach and Lagoon, and to provide feedback, as part of the continuing planning process. Family-friendly activities will be available, along with Spanish translation services and additional accessibility accommodations upon request. Participants may attend either in person or virtually. The public is encouraged to RSVP in advance via Eventbrite.
Located at the eastern edge of the Santa Monica Mountains, the Topanga Lagoon Restoration Project area includes Topanga State Park, managed by California State Parks, and Topanga Beach, managed by the Los Angeles County Department of Beaches and Harbors. The project also includes the nearby Caltrans right-of-way along Pacific Coast Highway and Topanga Canyon Boulevard. The Resource Conservation District of the Santa Monica Mountains serves as the project’s grant manager.
The restoration effort seeks to preserve and expand the lagoon’s unique biological, cultural, and recreational resources while improving coastal access, emergency response, and visitor amenities. The lagoon also serves as a natural filtration system and stormwater buffer and provides habitat for rare and endangered species. Long-term planning efforts are also helping address the impacts of sea level rise and changing coastal conditions.
Learn more at topangalagoonrestoration.
|
|
The January 2025 Palisades Fire burned through the project area, destroying all buildings in the Topanga State Park portion and damaged facilities within Topanga Beach. State Parks is initiating a recovery planning effort for all their facilities affected by the fires. More information is available on Parks’ website here. Source: Resource Conservation District of the Santa Monica Mountains Stream Team. 2025.
|
|
Partners are working on the 30% design for Topanga Beach, which includes improved coastal access through expanded parking, trails and improved bus stops. Public safety will be improved via a new helipad and updated lifeguard building, and all beach development will be moved inland for proactive protection from sea level rise. Interpretive features and a living shoreline element are also included. Source: Design Workshop Inc. 2026.
|
|
Partners are working on developing the 60% design for Topanga Lagoon and the associated PCH bridge. Expanding the bridge length from the existing 79’ to 440’ will allow the lagoon ecosystem to be expanded from ~ 1 acre to 8 acres, provide vital improvements for the migration and survival of endangered steelhead trout and tidewater goby, as well provide the ability for the ecosystem to adjust to sea level rise and other climate stressors by providing more space and areas for movement. Sources: Resource Conservation District of the Santa Monica Mountains (upper), Moffatt and Nichol (lower).
|
|
Endangered Southern California steelhead (Oncorhynchus mykiss irideus) are only known to currently breed within the Santa Monica Bay in Topanga Creek underlining the importance of the restoration project for the preservation of this species. This fish once populated most, if not all, of the creeks connected to the Santa Monica Bay. Source: Resource Conservation District of the Santa Monica Mountains Stream Team.
