2015 Map of Lake Mongoulois

About this map

Bayou Chene sits at the heart of this complex riverine landscape, where the shifting waters of the Atchafalaya Basin define the boundary between Iberville Parish and St. Martin Parish. This 2015 study documents a labyrinth of natural and engineered waterways, from the broad expanse of Lake Mongoulois to specialized channels like the Blind Tensas Cut and Splice Island Chute. The map reveals the intricate drainage patterns of the Atchafalaya Basin Floodway, characterized by numerous named islands such as Splice Island and Cozine Island. Local history is reflected in the distinctively named water features like Bear Hundred Dollar Bayou and Little Devil Cut, which hint at the navigational challenges and traditional naming conventions of the Louisiana swamp. The grid of the Public Land Survey System overlays the fluid terrain, illustrating the intersection of formal land management with the dynamic hydrology of the Bayou De Plomb and Big Tensas Bayou systems.