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1900 Map of Cucamonga

Name: 1900 Topographic Map of Cucamonga
Creator: U.S. Geological Survey
Published: 1900
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1900

About this map

The San Gabriel Timber Land Reserve dominates the northern half of this 1894 survey, providing a sharp contrast between the steep canyons of the San Antonio Range and the burgeoning agricultural colonies below. The landscape transitions from high points like Cucamonga Peak and Sugarloaf Peak into a grid of citrus groves and rail-oriented settlements. Early infrastructure is evident at the Power House in San Antonio Canyon and the Toll House near Hog Back.

The Southern California valley floor is defined by a dense network of competing railroads, including the Atchison Topeka and Santa Fe and the Southern Pacific R. R. with its specialized Chino Branch. These lines connected established towns like Pomona and Ontario to smaller agricultural nodes such as Ioamosa, Rochester, and Etiwanda. Notable local landmarks like Indian Hill and the San Bernardino Base Line anchor the regional survey, reflecting the systematic land development of the late nineteenth century.