1972 Map of Telegraph Wash

About this map

The Santa Teresa Mountains dominate the western landscape of this mid-1970s survey, where the rugged terrain transitions into the wide drainage systems of the San Carlos Indian Reservation. This arid region in Graham County is defined by its water management and ranching history, evidenced by the isolated Y L Ranch and a network of remote water sources like Brimhall Well and Middle Point Tank. The map documents a complex system of seasonal waterways, including the prominent Telegraph Wash and Black Rock Wash, which carve through the high desert. A labyrinth of Jeep Trails provides the primary access through this territory, while the Old Mil Res Bdy in the northeast corner hints at the area's historical military jurisdictional legacy. The cartography provides a clear picture of the boundary lines and topographic shifts where the high peaks meet the broad alluvial fans.