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1932 Map of Beartrap Canyon

Name: 1932 Topographic Map of Beartrap Canyon
Creator: U.S. Geological Survey
Published: 1932
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1932

About this map

Santa Barbara National Forest dominates this 1930s survey, revealing a landscape defined by early infrastructure and canyon terrain on the border of Los Angeles and Ventura counties. A critical corridor for travel and utility is visible along U S Highway No 99 and the adjacent Transmission Line, which cut through the mountainous interior. Industrial development in this era is anchored by the General Petroleum Company Liebre Pumping Sta, a significant waypoint for the regional petroleum economy of the early 20th century.

Water and drainage patterns dictate the limited human footprint, with the Halfway Inn and French Flat serving as lonely markers of habitation. The topography is meticulously detailed along Piru Creek and its many tributaries, including Beartrap Canyon and Posey Canyon, where firebreaks and beacons underscore the forest management and aviation navigation needs of the time. This sheet is particularly valuable for tracing early California highway history before later realignments transformed the route.