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1948 Map of San Francisco

Name: 1948 Topographic Map of San Francisco
Creator: U.S. Geological Survey
Published: 1951
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1951

About this map

The Presidio of San Francisco and a dense network of coastal fortifications including Fort Miley, Fort Mason, and Fort Winfield Scott anchor the mouth of the Golden Gate in this post-war survey. The map captures the Bay Area during a period of massive mid-century expansion, showing the established footprints of Richmond, Berkeley, and Oakland linked by the Oakland-Bay Bridge.

Southward along the peninsula, the Southern Pacific rail line threads through emerging suburbs like Millbrae, Burlingame, and San Mateo, while the San Mateo-Hayward Toll Bridge and Dumbarton Toll Bridge illustrate the increasing connectivity across San Francisco Bay. Beyond the urban centers, the landscape rises into the Santa Cruz Mountains, where the Upper Crystal Springs Reservoir and San Andreas Lake mark the geological trace of the peninsula's primary fault line, contrasting with the offshore isolation of the SE Farallon islands.