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1943 Map of San Guillermo

Name: 1943 Topographic Map of San Guillermo
Creator: U.S. Geological Survey
Published: 1978
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1978

About this map

Los Padres National Forest dominates this mid-century landscape, characterized by the winding drainages of the Transverse Ranges. Grounded in a 1943 survey, the map details the rugged upland terrain surrounding San Guillermo Mountain and the high elevations of Pine Mtn. The hydrology of the region is well-documented, tracing the various forks and tributaries of Piru Creek, including Cedar Creek and South Fork Piru Creek.

Settlement is sparse in this mountainous reach, with human activity concentrated primarily at Plush Ranch within the Lockwood Valley. Historic transportation routes like the Wagon Road follow the natural contours of Wagon Road Canyon, providing a clear record of how early travel navigated this complex topography. For researchers, the inclusion of remote features like Pine Springs and Dry Canyon offers a precise look at the backcountry before modern development or major forest management changes occurred.