2020 Map of Grand Bayou du Large

About this map

Grand Bayou du Large winds through this coastal marshland, where the intricate hydrology of Terrebonne Parish reveals a landscape almost entirely defined by water and shifting wetlands. The map details a complex network of estuarine bodies, including the wide expanse of Caillou Lake and smaller, isolated waters such as Hackberry Lake and King Lake. This 2020 survey illustrates the modern configuration of the Louisiana gulf coast, showing how Turtle Bayou and Fish Bayou thread between the bays before reaching the open waters of Caillou Bay. Public Land Survey System boundaries are noted throughout the wetlands, marking legal divisions across the tides and marshes. The concentration of place names like Bayou Grand Caillou and Bayou John Bop highlights the enduring cultural geography of the bayou, where watercourses serve as the primary landmarks in an ever-changing environment.