1983 Map of San Rosendo

About this map

The Rio Grande Rio Bravo carves through this binational borderlands landscape, defining the international boundary between Brewster Co, Texas, and Coahuila, Mexico. Published in the early 1980s, the map documents a terrain marked by numerous intermittent watercourses and peaks. Significant landmarks include the settlement of San Rosendo and a series of named elevations such as C. Quemado, C. El Pilon, and C. El Leon. The drainage patterns are intricate, with La Yegua and Caballo Blanco feeding toward the river corridor, where Rapids are noted in the main channel. This topographic study reflects the coordinated effort of the International Boundary and Water Commission to delineate this desert frontier, capturing the sparsely populated ranching or transit areas as they appeared following the 1970 treaty.