2018 Map of Dog Keys Pass

About this map

Gulf Islands National Seashore protects this maritime landscape where the waters of the Mississippi Sound meet the open Gulf. This survey illustrates the dynamic coastal boundaries between Harrison and Jackson counties, stretching south to include the border of St. Bernard Parish in Louisiana. The map centers on the navigable gap of Dog Keys Pass and Little Dog Keys Pass, which separate the barrier island system. These passes have historically served as critical openings for vessels moving between the mainland and the deeper waters of the Gulf. The western edge of Horn Island at West Point and the eastern tip of Ship Island at East Point frame the pass, showing the precise shoreline positions of these shifting sand features as they existed in the late twenty-tens.