2018 Map of South of Belle Isle

About this map

The Gulf of Mexico dominates this coastal survey of St. Mary Parish, documenting a maritime landscape where the Louisiana wetlands meet the open sea. The map focuses on the complex transition from marshland to deeper waters, centered on the outlet of New Pass as it flows south into the gulf. This pass serves as a critical hydrologic connection for the coastal ecosystem, facilitating the movement of water and sediment through the Atchafalaya basin's southern fringe. Further offshore, the underwater topography is marked by the Ann Channel, a feature significant for regional navigation and the movement of currents. The lack of terrestrial infrastructure or settlements underscores the dynamic and unstable nature of this deltaic coastline, providing a clear record of the shoreline and bathymetric features in the early twenty-first century.