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1941 Map of Alder Creek

Name: 1941 Topographic Map of Alder Creek
Creator: U.S. Geological Survey
Published: 1941
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1941

About this map

The Angeles National Forest dominates this 1935 survey, a terrain defined by the high elevations of the San Gabriel Mountains. In the decades before modern development encroached upon these slopes, the region supported specialized activities ranging from ranching at the Loomis Ranch to resource extraction at the Monte Cristo Mine and Falcon Mine. The landscape is a network of deep drainages such as Big Tujunga Canyon and Santiago Canyon, which necessitated the construction of early infrastructure like the Angeles Crest Highway and several Firebreak lines to protect the timber and water resources.

Local management is anchored by the Chilao Guard Station near Chilao Creek, monitoring a territory that includes notable summits like Pacifico Mtn and Granite Mtn. This map captures the forest during a period of active mining and early conservation efforts, providing a look at the remote landmarks and water sources like Fountainhead Spring and Sheepcamp Spring that were vital to those navigating the high country.