2020 Map of Petit Bois Pass

About this map

Dauphin Island stretches along the northern edge of this coastal survey, where the terrestrial landscape of Alabama meets the open waters of the Gulf of Mexico. The westernmost tip of the island, identified as West Point, marks a critical geographic boundary where the Mississippi Sound converges with the tidal currents of Petit Bois Pass. This 2020 map documents the contemporary shoreline and bathymetric transitions of this barrier island environment, showing the fragile landmasses that protect the inner sound from the Gulf's surf. The cartography focuses primarily on the maritime environment, illustrating the shoals and channels that define the navigational approaches to this section of the Mobile County coast.