1955 Map of Port Isabel

About this map

Port Isabel serves as the focal point of this coastal survey, where the Intracoastal Waterway meets the deep-water Brownsville Ship Channel. The landscape is defined by the complex hydrography of the Laguna Madre and the transition to the Gulf of Mexico through the Brazos Santiago Pass. Significant mid-century development is visible around Laguna Heights and the southern tip of South Padre Island, including the Queen Isabella State Fishing Pier and the recreation areas at Isla Blanca Park. South of the ship channel, the terrain remains largely dominated by tidal flats and numerous lomas, or clay dunes, such as Loma de la Falangana and Loma del Islote. These natural elevations stand out against the Shifting Sand Dunes of Brazos Island and the marshes of South Bay, illustrating the traditional maritime and ranching geography of the Lower Rio Grande Valley coastline.