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1929 Map of Pico

Name: 1929 Topographic Map of Pico
Creator: U.S. Geological Survey
Published: 1929
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1929

About this map

Pico Oil Field sits at the heart of this 1929 industrial landscape, marking a significant era of petroleum extraction in the Santa Susana Mountains. The terrain is dominated by a complex network of drainages including Pico Canyon, Towsley Canyon, and Las Llajas Canyon, which carve through the high elevations of the San Francisco region. These canyons served as the primary conduits for early access to oil leases and mountain grazing lands.

The administrative boundary of the Los Angeles Ventura Co line runs through the western portion of the sheet, bisecting the high ridges. Infrastructure of the late 1920s is represented by a prominent Power Transmission Line crossing the northern canyons. Geologists and local historians can use this survey to trace the early footprint of the oil industry before modern development altered the topography of Salt Canyon and Sand Rock Canyon.