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1952 Map of Union Island

Name: 1952 Topographic Map of Union Island
Creator: U.S. Geological Survey
Published: 1969
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1969

About this map

The low-lying delta lands of San Joaquin County are defined here by an intricate web of irrigation and drainage, where Union Island and the Stewart Tract are bound by the meandering courses of the Old River and Paradise Cut. This mid-century survey illustrates the industrial and agricultural infrastructure essential to the region, most notably the Sugar Refinery located just north of the growing city of Tracy. The landscape is etched with historical boundaries like the Grant Line and a network of water management features including the Fabian and Bell Canal and Sugar Cut.

Urban expansion in the late 1960s is documented in the southern portion of the map, showing the growth of residential areas and local landmarks such as El Pescadero Park and North School. In the more rural northern reaches, schools like David Bixler Sch and Naglee School serve the farming communities scattered along Howard Road and Clifton Court Road. The Southern Pacific railroad provides the primary industrial artery, connecting the local processing facilities to the broader California trade network.