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1915 Map of Hayward

Name: 1915 Topographic Map of Hayward
Creator: U.S. Geological Survey
Published: 1939
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1939

About this map

The eastern shoreline of San Francisco Bay is defined here by a network of landings and industrial salt works during the early twentieth century. Extensive marshlands and sloughs stretch from San Leandro Bay down to Dumbarton, punctuated by sites like the Union City Salt Works and Crystal Salt Works. These coastal operations represent the primary industry of the period, connected to the interior via numerous landings such as Roberts Landing, Johnson Landing, and Jarvis Landing.

Further inland, the transition from the bay flats to the hills is marked by growing agricultural and rail centers. The Southern Pacific and Western Pacific lines serve established towns including San Leandro, Hayward, and Newark. Notably, the map captures early development in Castro Valley and the smaller clusters of Mt. Eden and Decoto, providing a detailed look at the land grants and topographic features like Lake Chabot and the Coyote Hills before the massive suburban expansion of later decades.