2012 Map of Grand Gosier Islands

About this map

Grand Gosier Islands and Gosier Island represent a dynamic and fragile barrier chain within the Gulf of Mexico, as recorded in this 2012 survey. These narrow ribbons of land in Plaquemines Parish illustrate the ever-shifting geography of the Louisiana coast, where land and water are in constant negotiation. The map provides a precise look at the shoreline configurations following several years of intense storm activity, which historically reshapes these barrier features. Beyond the visible land, the survey identifies submerged hazards and shallow reaches such as Myth Shoal and Errol Shoal. These shoals are critical indicators of the underlying geological structures that once supported larger landmasses, offering researchers a data point for studying coastal erosion and island migration in the Chandeleur Islands vicinity.