Tybee Island faces a critical battle against erosion as natural processes are disrupted by human development, forcing a constant, costly race to restore its protective beaches.
The dune near the DeSoto Beach Hotel no longer slopes gently toward the tide. Instead, it ends in a jagged, five-foot cliff—a stark wall of exposed roots and severed vegetation that looks as though the landscape had been sliced in half by a giant blade.
For residents and officials on Tybee Island. this is not just a visual blight; it is a signal that the island’s primary defense against the Atlantic is failing. While barrier islands should naturally replenish their sands from northern neighbors. decades of shipping channels. sea walls. jetties. and dense island development have severed that cycle. Now, the island is essentially losing a race against the clock and the encroaching sea.
Since the 1970s. the Army Corps of Engineers has attempted to patch the damage by dredging sand and pumping it onto the shoreline. On Tybee, located just south of the Savannah River’s mouth, this renourishment typically occurs every seven years. But the process is becoming increasingly precarious. During the winter of 2019 and 2020, the Corps deposited 1.3 million cubic yards of sand onto the beach. Today, more than half of that material has already vanished.
City manager Bret Bell describes the scene as startling to witness up close. Beyond the physical damage to the dunes. the erosion has begun to claim sea turtle nests and force the removal of beach rental operations. Even local hospitality is suffering; the state of the beach has led to lost bookings at the DeSoto. directly impacting the local economy.
The stakes extend far beyond tourism. With sea levels rising by roughly half an inch every year, the beach and dune system act as the island’s only barrier against storm surges that could otherwise inundate the entire landmass.
Planning for the next round of renourishment began the moment the previous project ended. The city. Chatham County. and the state of Georgia successfully raised 40 percent of the $20 million price tag—the mandatory local match required for the federal program. However, when Congress underfunded the national effort, Tybee was abruptly left off the project list. The result was a scramble, as beach communities across the coast began competing for a shrinking pool of available capital.
After months of local lobbying. letter-writing campaigns by residents. and visits from Georgia’s congressional delegation. a shift occurred in September. The Corps redirected leftover funds from other projects, effectively securing the budget needed to begin work this winter. It was a development that Bell openly characterized as a “miracle.”.
When the work begins, the approach will shift. Rather than the standard method of pumping sand directly onto the beach. the Corps plans to deposit dredged material from the Savannah River shipping channel into the shallows just offshore. The objective is to dampen the wave energy that currently scours the beach. allowing the sand to migrate toward the shore in a way that mimics natural replenishment. Officials believe this method could extend the life of the project. pushing the next required renourishment back from seven years to ten.
For now, the island waits for the sand to arrive, hoping the new strategy can finally hold the tide at bay.
Tybee Island beach erosion Army Corps of Engineers coastal protection climate change Georgia coast sand renourishment