2018 Map of Petit Bois Pass

About this map

Dauphin Island stretches along the upper portion of this maritime survey, forming a critical barrier between the Mississippi Sound and the open Gulf of Mexico. The western extremity of the island is marked by West Point, a shifting sandy landform that helps define the eastern edge of Petit Bois Pass. This channel serves as a vital hydrological connection, allowing the exchange of waters between the sheltered sound and the gulf. The map illustrates the specialized topography of this coastal environment, where low-lying sandbars and seasonal shorelines are constantly reshaped by the tides and tropical weather systems common to the Mobile County coast. These features represent the westernmost reaches of the Alabama barrier island chain before the transition into Mississippi state waters.