2014 Map of Sierra de la Lechuguilla

About this map

The Sierra de la Lechuguilla rises from the arid basin of south-central Yuma County along the international boundary between the United States and Mexico. This survey details a remote section of the Sonoran landscape, where the jagged contours of the sierra contrast with the sprawling outwash of the Lechuguilla Desert. The map documents the precise path of the border line as it cuts diagonally across the desert floor, crossing from Arizona into Sonora. This region is characterized by extensive alluvial fans and dry desert washes that radiate from the mountains, illustrating the complex drainage patterns of a landscape defined by extreme aridity and seasonal water movement. The sparse human footprint is limited to the administrative markings of the international line and the township and range survey grid.