2021 Map of Sierra de la Lechuguilla

About this map

The United States of America Estados Unidos Mexicanos international boundary cuts diagonally across this remote desert landscape, marking the geopolitical divide between Arizona and Sonora. The terrain is dominated by the Sierra de la Lechuguilla, a mountain range that rises sharply in the northwest corner, while the vast Lechuguilla Desert floor extends across the central and eastern sections. This survey documents the arid topography of southern Yuma County in the modern era, showing the intricate drainage patterns of ephemeral washes that crisscross the sandy basin south of the border. Public Land Survey System grids, including t13s r16w and t14s r17w, provide the structural framework for the township and range divisions that define this borderland region.