1941 Map of Arivaca

Water management in this arid environment is evidenced by a high density of named tanks and wells, such as the Secundino Well and Cordova Tank, supporting livestock at properties like the Arivaca Ranch and Rancho Seco. To the south, the Coronado National Forest boundary marks the transition into the Fraguita Mountains, while the Pima and Santa Cruz County line bisects the rugged terrain. This survey provides a rare look at the distribution of small-scale mining and cattle ranching before later 20th-century developments.