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1958 Map of Wilson Valley

Name: 1958 Topographic Map of Wilson Valley
Creator: U.S. Geological Survey
Published: 1975
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1975

About this map

Cache Creek winds through a complex network of canyons and ridges in this late-1950s survey of the Lake County interior. The map illustrates a landscape primarily defined by water and elevation, where Wilson Valley and Kennedy Flats provide rare level ground amidst the prominent peaks of Round Mtn and Grizzly Peak. To the south, Morgan Valley Road serves as the primary artery through Morgan Valley, passing by named landmarks like Butte Rock and Twin Sisters.

A network of rugged trails, including several identified as Jeep Trails, highlights the era's limited accessibility into the backcountry north of Little Blue Ridge. These paths connect remote points like Dunfield Spring and The Peninsula, following natural drainages such as Stemple Canyon and Harley Gulch. This data, compiled from 1957 aerial photography, captures the drainage patterns and topography of the California Coast Ranges before significant modern infrastructure changed the character of these high valleys.