2015 Map of Grand River

About this map

The Atchafalaya Basin Floodway dominates this portion of southern Louisiana, illustrating a complex aqueous environment where the Upper Grand River and Grand River converge. This 2015 survey details the intricate network of waterways that define the border between Iberville Parish and St. Martin Parish. The landscape is characterized by a dense system of bayous and bays, including Pigeon Bay, Spike Bay, and Pat Bay, which reveal the hydrological patterns essential to the region's ecology and history. Navigation and drainage are central themes, traced through features like the E Fork Bayou Pigeon and the W Fork Bayou Pigeon. Remote water bodies such as Frog Lake and Sawyers Cove sit alongside managed corridors like Bayou Sorrel, reflecting the specialized geography of the Mississippi River delta’s floodplain management systems.