This article dives into Marin County’s new shoreline restoration at Greenwood Beach, right in Tiburon’s Blackie’s Pasture. Crews are out there building a sediment retention drift sill, hoping a nature-based approach can finally slow down the wind-and-wave erosion chewing away at Richardson Bay.
Marin County, the Town of Tiburon, and Audubon California are teaming up. Their goal? Swap out hard barriers for living shorelines that actually protect habitats—and maybe, just maybe, keep the shoreline steady for a while.
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What’s happening at Greenwood Beach and Blackie’s Pasture
Right now, Marin County crews are hauling in rocks and soil to build that sediment retention drift sill at Greenwood Beach in Blackie’s Pasture. It’s the first visible step in a much bigger restoration plan.
Instead of the usual rip-rap, the team will rebuild about 1.4 acres of sand-gravel beach and salt marsh at Greenwood and Brunini beaches. They’re betting on a living shoreline that works with the tides, not against them.
Photos from March 25 show how things kicked off. There’s a big push planned for September—a four-to-six-week sprint to finish up the restoration.
This whole approach leans hard on natural materials and letting habitats recover. The idea is to keep sediment in place, slow down erosion, and bring back some of the ecological magic in Richardson Bay’s intertidal zone.
Project goals and benefits
Key goals: stabilize sediment, cut down erosion, and restore the intertidal zone’s ecological function. The living shoreline is supposed to help native habitats and still let people enjoy the Tiburon waterfront.
- Keep shoreline sediment steady to protect Greenwood Beach, Brunini Beach, and the Marin Town Common from constant wind and waves.
- Slow erosion that threatens trails, parking, and homes in Tiburon, Belvedere, and nearby coastlines.
- Bring salt-marsh and shallow-water habitats back for birds, fish, and invertebrates that thrive in Richardson Bay and nearby estuaries.
- Boost long-term resilience against climate change, but keep public access and recreation alive in Mill Valley, Sausalito, and Larkspur.
- Show other Marin communities—San Rafael, Novato, San Anselmo, Fairfax—how nature-based shoreline projects can actually work.
Partners, location and timeline
Greenwood Beach sits along Tiburon’s shoreline in Blackie’s Pasture. Marin County leads the project, working closely with the Town of Tiburon and Audubon California.
This partnership signals a shift: local leaders want coastal restoration that protects both property and habitat, without the old-school hard defenses you see elsewhere around Richardson Bay.
Officials say the first phase started with moving rock and soil in March. The main work is scheduled for September, with construction lasting four to six weeks.
They’re juggling permits, weather, and ecological timing—hoping to have a real, functioning living shoreline by the end of the year.
Timeline and construction windows
The first phase happened on March 25. September is the big window for main construction.
Crews will focus on placing sediment, setting up the drift sill, and slowly bringing back dune and marsh habitats. Folks in San Rafael, Corte Madera, and San Anselmo will probably notice the changes as things move along.
What this means for Marin communities
From Sausalito’s waterfront to Mill Valley’s marshes, Marin County’s shoreline is a patchwork of parks, old docks, and homes that all rely on healthy intertidal zones.
The Greenwood Beach project in Tiburon could be a real example of how ecological restoration, public access, and resilient infrastructure can work together in places like Marin City, Ross, and Novato. It’s not perfect, but it’s a start.
Countywide impact and local voices
County officials say nature-based shorelines do more than just protect ecological function—they also support local economies tied to waterfront recreation and tourism. In towns like Larkspur, Corte Madera, and Fairfax, people are keeping an eye out for habitat recovery and improved water quality in Richardson Bay.
Some folks hope to see more bird nesting sites too. Marin communities, whether it’s San Rafael’s downtown or the shores near San Quentin State Park, get the benefit of less erosion risk and a coastline that’s better able to handle sea-level rise.
The Ark snapped a photo and wrote a quick report about the project, giving local readers a closer look at what’s happening. The paper encourages people to support independent community journalism by subscribing or making a contribution.
If you want more info, you can contact The Ark’s publisher or advertising director to learn how to help keep Marin’s environmental and civic stories in the spotlight.
Here is the source article for this story: Sediment work marks start of beach restoration at Blackie’s Pasture
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