1990 Map of Big Horn Peak

About this map

Big Horn Mountains terrain dominates the northeastern portion of this Maricopa County landscape, centered on the prominent summit of Big Horn Peak. As of this 1986 field check, the southern expanse is defined by the Harquahala Plain, an area managed through a network of Wells, Check Dams, and the massive Granite Reef Aqueduct. The presence of several Mine Shafts and prospects near the mountain base points to a history of mineral exploration, while the southern infrastructure, including a Landing Strip and Feed Lot, reflects the region's mid-century transition toward larger-scale agricultural and ranching operations. The aqueduct serves as a major dividing line between the high desert peaks and the irrigation-dependent plains below.