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2025 Map of Port Isabel

Name: 2025 Topographic Map of Port Isabel
Creator: U.S. Geological Survey
Published: 2025
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2025

About this map

Port Isabel and South Padre Island serve as the focal points of this coastal survey, linked by the prominent Queen Isabella Cswy. The landscape is defined by its deep-water access and complex hydrography, featuring the Brownsville Ship Channel and the Intracoastal Waterway which navigate between Long Island and the mainland. For local history researchers, the map identifies specific resting places including the Port Isabel City Cem and Santa Isabel Cem, situated near the town's grid of named streets like Tarpon Ave and E Adams St.

South of the main channel, the terrain transitions into a network of low-lying mounds known as lomas, such as Loma del Mesquite and Loma Ochoa. These features rise above the wetlands and lagoons that characterize the region's barrier island geography. The eastern edge is anchored by the coastal expanses of Del Mar Beach and Boca Chica Beach, demonstrating the maritime character of this tip of Texas.