Editor's Note: The following is from author and Patch surf columnist Serge Dedina. He discusses sand replenishment as a Southern California concern, and replenishment projects we thought would be of interest in our beach city.
As I watch the news reports of the devastation caused by Hurricane Sandy’s storm surge, I think of the coastal area where I live and surf.
Imperial Beach is a low-lying coastal city connected to Coronado by a thin strip of sand. Any storm with a potent tidal surge would immediately obliterate the homes, dunes and streets of my coastal backyard.
Understanding the the impact of Sandy on the beaches, barrier islands and cities of the East Coast is critical for the residents of Southern California in order to evaluate the costly efforts to preserve local beaches.
Now that SANDAG is finishing up its $28 million regional sand replenishment project, we need to ask if having government agencies continue to spend billions of dollars nationally dumping sand on our beaches to forestall the inevitable reduction in size due to man-made erosion, violent storms and sea level rise, is really worth it.
That is especially true in light of new proposals by the Army Corps of Engineers to spend $261 million on sand projects just for Encinitas, Solana Beach and San Clemente.
“Beach replenishment and beach nourishment are euphemisms for what are really beach dredge and fill that turns the beach into an industrial site during construction,” said Surfider Foundation Environmental Director Chad Nelsen. “They should be designed to minimize impacts to nearshore reefs that are important recreational (surfing, diving, etc.) and ecological resources.”
Terry Gibson, a longtime surfer and fisherman from Florida who is the Senior Editor of Fly & Light Tackle Angler, has spent a considerable amount of effort evaluating the impacts of badly managed sand replenishment projects on the East Coast.
“Near shore reefs or other types of essential fish habitat are typically buried or silted over, without adequate much less kind-for-kind mitigation,” he said.
According to Gibson, “Chronic turbidity is often a problem. The entire slope of the near shore environment typically changes so that wave quality from a surfer's perspective is degraded or destroyed. And you often lose the qualities that make a beach attractive to sea turtles, not to mention the impacts to the invertebrates that live in the beach and are a requisite forage source for fish and birds.”
The San Diego Chapter of the Surfrider Foundation is currently monitoring the impacts to surf throughout San Diego from the current SANDAG regional effort via video monitoring. In Imperial Beach the SANDAG project has shut down the surf for about 75 percent of our beachfront.
"At IB we've been seeing a trend towards decreasing surfer counts and decreasing ride length," said Tom Cook of San Diego Surfrider.
According to Julia Chunn of San Diego Surfrider, “We hope that video-based monitoring, similar to our current Surf Monitoring Study, will be required of all large beach nourishment project in the future.”
For this reason, it is my view that the current SANDAG project is preferable to the incredibly expensive projects the Army Corps has slated for Solana Beach, Encinitas and San Clemente. Those proposed federal projects come with a price tag that in light of the cost of Sandy’s storm damage and federal fiscal woes, seems obscene.
Additionally, the federal project planned for Solana Beach-Encinitas, that in the long-term is designed only to protect 300 feet of beach, would involve more than double the amount of sand SANDAG deposited on beaches throughout the entire county. These Army Corps projects are relics of the past that do not reflect our climate-contorted and fiscally prudent future.
Clearly we are going to have be smarter and more resourceful with our tax dollars when it comes to conserving our beaches. The process works best when all stakeholders as well as scientists can come to the table with local agencies and evaluate the most cost effective and sensible solutions to coastal erosion, rather than when Army Corps push through massive dredge and fill projects with little public oversight and accountability.
“These projects should be considered temporary solutions that buy us time to find sustainable long term solutions to our coastal erosion problems because they are expensive, short lived and will not be sustainable in the face of sea level rise,” said Nelsen.
Serge Dedina is executive director of WiLDCOAST, an international conservation team that conserves coastal and marine ecosystems and wildlife. He is the author of Wild Sea and Saving the Gray Whale
