2013 Map of Amistad Dam OE S

About this map

The Rio Grande marks the defining natural and political boundary in the northeast corner of this arid landscape, located south of the Amistad Reservoir. The terrain is characterized by a high-frequency network of dry washes and arroyos that drain toward the river corridor, illustrating the complex drainage patterns common to the Texas-Coahuila borderlands. While the map is predominantly focused on the undeveloped landscape of the Coahuila region, the presence of the international boundary underscores the geographic isolation and geological character of the Trans-Pecos transition zone before it reaches the coastal plains.