1940 Map of Bayou Du Large

About this map

Marmande Ridge and the winding course of Bayou Du Large define the habitable terrain of this Terrebonne Parish landscape as it was surveyed just before the 1940s. While most of the region consists of expansive marshlands and major water bodies like Lake De Cade and Lake Merchant, human activity is concentrated along the narrow natural levees. The settlement of Theriot serves as a focal point at the northern edge, with smaller outposts such as Bourgs Camp located further into the wetlands. This survey captures a specific era of coastal Louisiana geography, where navigation was dictated by bayous like Bayou Mauvais and Bayou Penchant. Cultural landmarks such as St Andrews Ch, Johnson Ch, and an Indian Mound near the northern boundary provide essential reference points for genealogists and local historians tracing family movements through these coastal parishes.