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 plans to use approximately 22 million cubic yards of sand to close the gap between East and West Ship Islands. This will restore both the island’s physical integrity and habitat for important species such as sea turtles, shorebirds, and Gulf sturgeon. This project served as a case study to test the usefulness of structured decision-making – a...