1972 Map of Zuberbueler Bend NW

About this map

Rio Grande Amistad Reservoir dominates the eastern edge of this landscape, marking a significant era of water management and international cooperation along the United States and Mexico border. The map illustrates the early 1970s character of the Amistad National Recreation Area, where the rising waters of the reservoir began to redefine the canyon terrain. Of particular interest to industrial historians is the Old Railroad Grade, which traces a path along the cliffs above the water line, offering a physical record of former transportation corridors that predated the inundation. The Texas Coahuila Jurisdictional Boundary follows the winding course of the submerged river channel, reflecting the complex political geography of this desert borderland.