2025 Map of Saint Charles Bay SW

About this map

Blackjack Peninsula dominates this coastal survey, where the intricate margins of Saint Charles Bay and Aransas Bay meet. The landscape is defined by an extensive network of shoals and reefs that stretch across the shallow waters, including Long Reef, Mack Reef, and the uniquely named Deadman Island. This environment illustrates the shifting nature of the Texas Gulf Coast, where the Intracoastal Waterway cuts a straight path for maritime commerce through a labyrinth of natural hazards like Pelican Reef and Poverty Reef. To the south, the northern tip of San Jose Island faces the open Gulf of America, showing the barrier island systems that protect the inland bights and sloughs, such as Spalding Bight and Vinson Slough, which provide vital habitats within this complex estuarine geography.