2016 Map of Port Isabel

About this map

Port Isabel stands at the maritime crossroads of the lower Texas coast, where the Brownsville Ship Channel meets the Intracoastal Waterway. This coastal landscape is defined by its series of lomas—unique clay dunes such as Loma del Mesquite and Loma de la Palangana—rising above the tidal flats of South Bay. The massive Queen Isabella Causeway serves as the primary artery connecting the mainland to the southern tip of South Padre Island, bridging the waters of the Laguna Madre system. To the south, the terrain becomes increasingly complex with the wetlands of Boca Chica Bay and the shoreline of Del Mar Beach, leading toward the mouth of the Rio Grande. The map captures the significant industrial and navigational infrastructure required for deep-water access, including the Port Isabel Channel and the protection afforded by Long Island, set against the delicate environmental transition of the Gulf Of Mexico coast.