What Is a Living Shoreline?
North Carolina’s salt marshes and oyster reefs are critical habitats for many fish and bird species. They protect our coasts by trapping sediments and filtering nutrients and pollutants from runoff that would otherwise greatly decrease coastal water quality. These habitats can gain elevation over time, thanks to the sediments they trap, so preserving them is key to protecting upland properties into the future. North Carolina’s coastlines are threatened by erosion due in part to rising sea levels, concentrated energy from boat wakes, more extreme storms, and poor coastal planning. Commonly used erosion control structures, like bulkheads, can increase erosion of salt marshes due to waves reflecting off the structures and scouring sediment away from the base of the walls, thereby destroying marsh and oyster habitat. Additionally, hardened structures can lead to increased erosion on neighboring properties.
Living shorelines are an alternative to traditional hardened coastal defenses that enhance coastal habitats while protecting property from erosion. There are many forms depending on anticipated wave energy, ranging from well planted, properly graded banks, to oyster bag sills or concrete structures where new oysters will grow, combined with marsh grass plantings near the shore. Once established, living shorelines have been shown to outperform bulkheads during hurricanes and are less expensive to repair, though some routine maintenance is needed.
EAC Role
Oak Island and the North Carolina Coastal Federation installed a living shoreline at Veterans Park (1408 E Yacht Drive, Oak Island, NC) in 2013 to help address shoreline erosion in the park and water quality issues in the Lockwoods Folly River Basin. In March of 2023, the Veterans Park living shore was adopted by Oak Island’s Environmental Advisory Committee (EAC). The EAC assists in organizing community volunteers to help maintain the living shoreline and pick up trash from the wetland sections of the park in order to keep unsightly and harmful plastic and other trash out of our local waterways. At the first clean-up event, held on March 17, 2023, three (3) staff members and seven (7) volunteers from the North Carolina Coastal Federation (NCCF) taught nine (9) Oak Islander Volunteers how to maintain living shorelines. They placed 40 new bags of marine limestone to stabilize the oyster sill and picked up 418 pounds of trash and marine debris from the marsh!
The EAC will be organizing living shoreline and maintenance events throughout the year. If you are interested, we would love to hear from you.
Click the links below for more information on Living Shoreline projects:
For more information on the Living Shoreline Project,CLICK HERE to contact the EAC Members.