1994 Map of Isle Au Pitre

About this map

Isle au Pitre and the western tip of Cat Island anchor this coastal survey where the waters of Mississippi Sound and Chandeleur Sound converge at the maritime border. The map documents a complex network of shoals, flats, and channels critical for navigation, including the Intracoastal Waterway and the Shell Bank Channel. On the southern edge of Cat Island, a lighthouse and named landmarks like West Point and Fish Tail Flat indicate the precarious nature of these barrier landforms. The intricate marsh and bayou systems at the southern end of the quadrangle, such as Bayou Pierre and Grand Pass, reflect the shifting hydrology of the Mississippi Delta's outer reaches. This document provides a look at the precise boundary between Harrison County and St. Bernard Parish, marking where Louisiana's marshy keys meet Mississippi's sound.