Our Vision of Beach Restoration and Preservation
We advocate a managed retreat strategy to restore both Ocean Beach south of Sloat and Sharp Park. At Sloat, our vision involves:
A long-term plan to relocate threatened infrastructure
(including the south of Sloat Great Highway, the two oceanside parking lots and the sewer lines underneath them).
The cleanup of all the rock and rubble littering the beach.
The use of sand dunes as the primary tool to slow erosion.
For Sharp Park, we advocate the decommissioning of the golf course, the removal of the rip-rap berm, and a full restoration of the wetland.
Thursday, January 28, 2010
why putting rock on the beach is a bad idea.
"coastal armoring" [also called shoreline/coastal protection structures and hard structures]
coastal armoring protects infrastructure (roads, houses, water treatment plants, parking lots...) NOT the beach from coastal erosion.
riprap revetments (engineered rock that is placed on the shoreline to protect property from coastal erosion) - example: rock proposed at Sloat Blvd.
and seawalls (vertical walls that are built in front of structures or along cliffs to stop coastal erosion) - example: O'Shaughnessy Seawall on northern OB
coastal armoring can cause the following NEGATIVE impacts to the beach:
1. passive erosion - the rock or seawall cause additional coastal erosion to occur down-drift and on the edges of the structure.
2. placement loss - rocks placed on the beach cover the beach and at high tide can block lateral access on the beach.
3. active erosion- beaches can narrow due to changes in beach dynamics and wave reflection.
4. public access issues - rock can block beach access and cause dangerous conditions for beach users and surfers.
MORE INFO AT:
Surfrider Website -
Scientific NOAA document titled: The Impacts of Coastal Protection Structures in California's Monterey Bay National Marine Sanctuary
UCSC Professor Gary Griggs article on California's Eroding Shorelines