2018 Map of Jacko Bay

About this map

Gulf of Mexico waters dominate this coastal section of southern Louisiana, where the boundary between Terrebonne Parish and Lafourche Parish runs through the open marshes and bays. The landscape is a fragmented collection of islands and shallow water bodies, reflecting the dynamic nature of the Mississippi River delta plain. To the west, Jacko Bay and Terrebonne Bay are protected by Cat Island and Terrebonne Island, while to the east, the waters of Timbalier Bay and Lake Raccourci are punctuated by the Bull Islands and Fornation Islands. Notable interior water features like Old Lady Lake and Bayou de la Valle demonstrate the intricate network of inland waterways that define this precarious interface between land and sea. This 2018 survey provides a precise record of these barrier islands and estuaries, including the Pelican Islands, which are critical to the region's environmental and geographic profile.