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Southeast CASC Science Seminar: Structured Decision Making as a Tool for Coastal Restoration: A Case Study on Ship Island, Mississippi
August 17, 2021 @ 10:00 am - 12:00 pm
August 17, 11:00 AM Eastern
Barrier islands protect mainland areas from storm surge, but can erode over time and require restoration. Ship Island, a barrier island off the coast of Mississippi, provides an example of this: the island was battered by Hurricane Camille in 1969 and split into two separate islands. As part of the Mississippi Coastal Improvements Program, the U.S. Army Corps of Engineers planned to use approximately 22 million cubic yards of sand to close the gap between East and West Ship Islands to restore the island’s physical integrity and habitat for important species such as sea turtles, shorebirds, and Gulf Sturgeon, a project that was recently completed. This case study tested the usefulness of structured decision-making – a systematic, formal approach for evaluating options – as a tool for making coastal restoration management decisions. Researchers solicited input from project stakeholders, scientists, and engineers and incorporated this information, along with modeling and quantitative analysis, into a framework to inform decision-making, should the island incur storm damage while the restoration is underway. Ultimately, the structured decision-making process yielded management recommendations that could be quickly and effectively implemented during the Ship Island construction, while helping participants maximize the island’s future resilience. It also led to a general decision framework and process that could be expanded and adapted for use by future barrier island restoration projects.