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1940 Map of Valyermo

Name: 1940 Topographic Map of Valyermo
Creator: U.S. Geological Survey
Published: 1940
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1940

About this map

Antelope Valley meets the northern slopes of the San Gabriel Mountains in this 1934 survey, where the dramatic San Andreas Rift Zone carves a distinct geological path across the landscape. The map captures a transition from high desert alluvial fans to the steep, wooded canyons of the Angeles NF. Local water management is evident through the network of the Ditch system and Reservoir near Longview, supporting the scattered agricultural outposts of the era.

Genealogists and local historians can trace numerous family-named properties such as Cobbleita Ranch, Aldrich Ranch, and Burkhart Ranch. The presence of the CCC Camp near Valyermo highlights New Deal-era infrastructure projects, while the Valyermo Ranger Sta and Big Rock Patrol Sta mark early administrative oversight of the mountains. Natural landmarks like the Devils Punchbowl and Holcomb Ridge define the southern terrain, accessible via the nascent Pear Blossom Highway.