2015 Map of Plumb Bayou

About this map

Atchafalaya Bay and the open waters of the Gulf of Mexico meet a complex network of coastal wetlands at the boundary of St. Mary Parish and Terrebonne Parish. This maritime landscape is defined by its intricate hydrography, where larger channels like Plumb Bayou and Deer Island Bayou segment the marsh into distinct landmasses. Notable features include Halters Island and Rainbow Island, which are surrounded by a web of smaller waterways such as Creole Bayou, Willow Bayou, and Crooked Bayou. The southern reach of the map shows the transition into Fourleague Bay via Creole Pass. This 2015 survey provides a modern baseline for the shifting coastline, capturing the relative positions of drainage canals and natural bayous like Bayou de Log and Little Carencro Bayou in a region where water and land are in constant flux.