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1915 Map of Lathrop

Name: 1915 Topographic Map of Lathrop
Creator: U.S. Geological Survey
Published: 1947
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1947

About this map

The confluence of the San Joaquin River and Old River dominates this 1912 survey of the California delta, where complex waterways and land grants define the local geography. Large tracts of land carry Spanish-influenced names such as El Pescadero (Grimes) and Campo de los Franceses, reflecting the era of Mexican land grants that predated American settlement. The town of Lathrop appears as a critical rail junction where the Southern Pacific (Fresno Line) and Western Pacific railroads intersect, highlighting the area's importance as a transportation hub for San Joaquin County.

Water management and rural education are central to the landscape, with features like Paradise Dam and Paradise Cut illustrating efforts to control the delta's flow. Scattered throughout the agricultural basins of Roberts Island are small country schools, including Island School, Mossdale School, and Rustic School, which served the farming families established near the banks of Walthall Slough and Tom Paine Slough.