2015 Map of Dog Keys Pass

About this map

Gulf Islands National Seashore defines the maritime character of this coastal chart, capturing the shifting barrier island landscape along the Gulf of Mexico. The map documents the strategic waterway of Dog Keys Pass and Little Dog Keys Pass, which separate the eastern tip of Ship Island at East Point from the western reach of Horn Island at West Point. This survey reflects the complex jurisdictional boundaries of the Mississippi Sound, where the line between Harrison and Jackson counties meets the open sea. Farther south, the marine boundary of St. Bernard Parish in Louisiana underscores the regional intersection of state waters. The sparse terrestrial features emphasize the dynamic nature of these sandy landforms, which serve as critical natural buffers for the mainland coast.