2019 Map of Saint Charles Bay SE

About this map

San Jose Island and Matagorda Island define the barrier landscape along the Texas coast in this 2019 survey. Separated from the mainland, these narrow landforms frame the entrance to Mesquite Bay and the intricate coastal wetlands of the region. The map highlights the shifting interface between the Gulf of Mexico and the interior estuarine systems, tracing the tidal dynamics through Vinson Slough. The boundary between Aransas and Calhoun counties cuts diagonally across the open water, illustrating how maritime jurisdictions are defined even far from the immediate shoreline. This map captures the pristine and relatively undeveloped character of these barrier islands, providing a clear record of the coastal topography and its natural inlets as they existed in the late 2010s.