2018 Map of Lake Athanasio

About this map

The Mississippi River-Gulf Outlet Canal cuts a stark, linear path through the marshy labyrinth of southeast Louisiana, bisecting the coastal landscape near the border of St. Bernard Parish and Plaquemines Parish. This aquatic environment is defined by its fluid geography, where vast interior basins like Lake Athanasio and Seven Dollar Bay merge with smaller channels such as Mulatto Bayou and Bayou Frenepiquant. The map illustrates the fragile coastal interface of the late 2010s, showing a network of islands and points including Point Eloi, Gardner Island, and Grassy Island that buffer the inner bays from the open waters of the Gulf. Hydrological features like Pass Fernandez and Canal Pecal highlight the historical importance of water-based navigation and tidal exchange in this deltaic region, while the surveyor's lines track the complex township and range divisions across the shifting wetlands.