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1933 Map of Azusa

Name: 1933 Topographic Map of Azusa
Creator: U.S. Geological Survey
Published: 1933
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1933

About this map

The San Gabriel Mountains dominate this early 1930s survey, revealing a landscape defined by steep canyon drainages and emerging public facilities within the Angeles National Forest. Notable institutional sites like the Canyon Tuberculosis Preventorium and the Pasadena Veterans Camp are situated along the southern mountain fringe, highlighting the region's historical role in convalescent care and veterans' services during the interwar years.

Hydrological engineering is evident at the Sawpit Dam, which controls flow through the deep Sawpit Canyon. Near the southern boundary, early residential and recreational development is marked by the settlement of Bradbury and the Monrovia Mt Park. Tracing the network of canyons, from Fish Canyon to Silver Canyon, the map illustrates how fire management through a designated Firebreak was already a critical priority for the forest. The presence of the Spring Boy Scout Camp further underscores the area's use as a mountain retreat for the growing Los Angeles basin population.