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1936 Map of Guijarral Hills

Name: 1936 Topographic Map of Guijarral Hills
Creator: U.S. Geological Survey
Published: 1947
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1947

About this map

Energy infrastructure and the winding course of the Arroyo Pasajero dominate this Fresno County landscape during the mid-1930s. The prominent Oil Tank Farm and Caliola Pumping Sta at the foot of Anticline Ridge reveal the industrial footprint of the regional oil industry. To the south, the Guijarral Hills rise above the alluvial floor, interrupted by the Polvadero Gap where Zapato Creek emerges.

The presence of the Southern Pacific railroad line, running roughly parallel to the arroyo, underscores the importance of rail transport for both agricultural and industrial interests like the Pleasant Valley Ranch. The rectilinear grid of Jayne Avenue and local section lines contrast sharply with the natural relief, providing a clear view of how early 20th-century surveying imposed order on the terrain of the western San Joaquin Valley.