2025 Map of Petit Bois Pass

About this map

Dauphin Island terminates at its western edge within this coastal Alabama survey, where the land gives way to the shifting currents of Petit Bois Pass. The map captures the delicate boundary between the sheltered waters of the Mississippi Sound and the open expanse of the Gulf of America. At West Point, the sandy terrain illustrates the ever-changing shoreline of the Gulf Coast barrier island system. This survey focuses almost entirely on the aquatic environment and the narrow spit of land that protects the mainland sound, providing a clear record of the bathymetry and coastal morphology at the time of the 2025 data collection. It is a vital document for understanding the maritime geography and navigation hazards in the waters southwest of Mobile Bay.