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1955 Map of Mt. Boardman

Name: 1955 Topographic Map of Mt. Boardman
Creator: U.S. Geological Survey
Published: 1957
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1957

About this map

The Diablos Range high country converges at the intersection of Santa Clara, Stanislaus, Alameda, and San Joaquin counties, anchored by the prominence of Mt Boardman VABM 3626 and Red Mountain VABM 3654. In the mid-1950s, this landscape was defined by remote extraction and strategic government land use. The presence of Western Mines near Harney School and the Phoenix Mine along Puerto Del Puerto Canyon points to the region's mineral interests.

Lower elevations in the San Antonio Valley show a cluster of civic and resource management sites, including the San Antonio Ranger Station and various reservoirs like Canyon Reservoir. To the southeast, the terrain shifts into a specialized military landscape with the Naval Bombing Range, which occupied a significant portion of the foothills above Adobe Canyon. The map reveals a network of remote ranching outposts, such as the Stanislaus County Ranch, connected by primitive roads and jeep trails through the canyons.