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1988 Map of Blankenship Well

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

USGS Topo · Published 1988

About this map

The United States and Mexico border defines the geography of this desert landscape, where the northern reach is occupied by the Organ Pipe Cactus National Monument. This international boundary intersects the Sonoyta Valley, a region characterized by sparse desert settlements and seasonal watercourses like the Sonoita. The presence of sites such as Blankenship Well and El Tomate (Campo Muñoz) highlights the critical importance of water access in the Desierto de Sonora.

South of the border in Sonora, the map identifies several local communities including Unión Cubabi, Matavacas (Cajeme), and Madero. The terrain is framed by the dramatic elevations of the Sierra de Santa Rosa and Sierra la Nariz, while historic transit is suggested by the Paso del Indio. This survey provides a precise look at the land use and topography of the Pima County borderlands during the late twentieth century.