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1951 Map of Cordelia

Name: 1951 Topographic Map of Cordelia
Creator: U.S. Geological Survey
Published: 1980
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1980

About this map

Sulphur Springs Mountain and the surrounding canyons define this transitional landscape where the San Francisco Bay area meets the Napa Valley. The map documents the mid-century expansion of residential areas such as Chabot Terrace, Flosden Acres, and Harry Floyd Terrace, many established to serve the industrial needs of the era. The Southern Pacific railroad lines intersect at Cordelia Junc, highlighting the region's importance as a transportation corridor between the valley and the coast.

Further inland, the terrain rises into Jameson Canyon and American Canyon, where agricultural patterns and water management are evident through features like Lake Chabot and various reservoirs. Educational and community life are noted by the presence of Green Valley Sch, the Olympic School, and the Permanente Foundation Hospital. This survey, updated with 1980 purple revisions, provides a clear view of how development pushed northward from the Vallejo vicinity into the rural gaps of SKY Valley and Suisun Valley.