2016 Map of Southmost OE E

About this map

The Rio Grande snakes through the northwest corner of this 2016 survey, defining the international boundary between Cameron County, Texas, and the United States and Mexico. The landscape is dominated by a complex network of wetlands and ephemeral water bodies characteristic of the lower Rio Grande delta. These scattered basins and oxbow remnants illustrate the shifting hydrology of the borderlands, where the river's historical meanders have left a lasting imprint on the terrain. While largely devoid of named settlements or major infrastructure, the map provides a precise look at the natural topography and political boundaries of the Southmost region as they existed in the mid-2010s.