2020 Map of Grand Gosier Islands

About this map

Grand Gosier Islands and the surrounding waters of the Gulf of Mexico dominate this 2020 topographic study of the outermost coastal reaches of Plaquemines Parish. As an exceptionally feature-sparse maritime map, it documents the ephemeral nature of Louisiana's barrier island system where land and sea constantly shift. The survey reflects the contemporary shoreline of these remote islands, which serve as critical landmarks and nesting grounds in the open gulf. Without the presence of inland settlements, roads, or man-made structures, the map focuses entirely on the hydrography and the precise positioning of these low-lying landforms within the vast aquatic expanse.