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2018 Map of Mount Johnson

Name: 2018 Topographic Map of Mount Johnson
Creator: U.S. Geological Survey
Published: 2018
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2018

About this map

The Gabilan Range forms a high divide along the San Benito and Monterey County line, a landscape defined by sharp drainage divides and deep canyons. Rising to prominence is Mt Johnson, which anchors the northern section of the map above Matarana Gulch. The terrain is etched with numerous family-named landmarks, such as Ben Graves Canyon, Sullivan Canyon, and Henry Sands Canyon, reflecting the historic land-use patterns of this part of the Central Coast ranges.

Lower elevations transition into broader valleys like Williamson Valley and Gloria Valley, where water is captured in features like Gloria Lake. Access across this complex topography is facilitated by historic routes such as Conlon Grade and La Gloria Rd, which navigate the steep descents toward the surrounding lowlands. The presence of these named valleys and water sources suggests a long history of ranching and livestock operations within these protected coastal mountains.