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1988 Map of Oracle Junction

Name: 1988 Topographic Map of Oracle Junction
Creator: U.S. Geological Survey
Published: 1989
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1989

About this map

Oracle Junction serves as the focal point of this late 1980s landscape at the boundary of Pinal and Pima counties. The area is defined by a complex drainage system flowing through Falcon Valley, where numerous washes like Big Wash and Suizo Wash cross the desert floor between the Falcon Divide and The Cordones. The settlement of Catalina shows established street grids in the southern portion of the sheet, reflecting the suburban expansion into the desert north of Tucson. High-tension infrastructure is prominent throughout, marked by transmission lines and a Substation.

Water management in this arid environment is evident through a series of specialized features, including the Small Hill Reservoir, Power Line Reservoir, and Indian Town Reservoir. Local landmarks such as the Trailer Park at the junction and a Landing Strip near the Cañada del Oro wash illustrate the transportation and residential patterns of the era. To the southwest, the foothills of the Tortolita Mountains emerge, containing a legacy of resource extraction noted by a solitary Mine Shaft.