Port Royal Sound
Living Shoreline / Smart Reef Initiative
Protecting South Carolina’s Coastal Marshes Through
Science, Innovation, and Sustainable Restoration
At Elliott’s Beach on Parris Island, decades of waves, currents, storms, and rising water levels have stripped away much of the intertidal salt marsh. The Port Royal Sound Living Shoreline / Smart Reef Initiative is testing a science-driven, hybrid approach designed to reduce erosional pressure, support marsh recovery, create habitat, and build a platform for long-term coastal observation.
Why This Work Matters
The Port Royal Sound Living Shoreline Smart Reef Initiative is about more than habitat restoration. It's about protecting one of the nation's most important military installations, Marine Corps Recruit Depot Parris Island. Healthy marshes act as natural buffers that reduce wave energy, stabilize shorelines, improve water quality, and help defend against storm surge and sea level rise. The innovative living shoreline strategies being developed and tested here not only protect the local ecosystem but also support the resilience of critical training infrastructure. This research helps ensure long-term mission readiness, while creating a model for other vulnerable military and civilian coastlines.
Salt marshes are more than a shoreline. They buffer uplands from erosion, provide habitat, cycle nutrients, and help filter water and sediment. When marshes disappear, communities lose both natural protection and important ecosystem functions.
Elliott’s Beach represents a particularly demanding coastal setting. Strong tidal currents, wind waves, vessel wakes, storms, sea-level rise, and existing infrastructure combine to create erosional forces that can exceed the capacity of conventional living-shoreline approaches.
A Hybrid Solution for a High-Energy Shoreline
The project begins with a practical question: can we first reduce the forces driving erosion enough to give natural shoreline processes a chance to recover?
Our researchers are combining high-resolution mapping, wave and current measurements, hydrodynamic modeling, repurposed concrete barriers, environmental sensing, and Bio-Rock research to test that idea at field scale.
Results to Date
Experimental Observations
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50% Wave-Energy Reduction
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Up to ~ 1 ft
Deposition Local Mud
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> 2,000 lb Barnacle Accumulation in 5-6 Weeks during early hydrokinetic
Bio-Rock test
Call To Action
Follow the progress. Explore the science. Help advance practical coastal-resilience strategies for Port Royal Sound and beyond.
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Early Results
Monitoring to date has measured greater than 50% reduction in wave energy across the installed barriers while still allowing water circulation and sediment exchange. Shell and sand are accumulating near the revetment, and some locations have recorded mud deposition approaching one foot. Bio-Rock testing has also produced calcium-carbonate precipitation and substantial barnacle and oyster recruitment.
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Science You Can Watch
This is not a one-time construction project. The shoreline is being measured before, during, and after intervention using LiDAR, GPS, 3-D sonar, wave and current instruments, photography, weather and water-level stations, and other environmental sensors. Selected observations and camera views can be made available to the public through live-data links.