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1950 Map of Robbs Peak

Name: 1950 Topographic Map of Robbs Peak
Creator: U.S. Geological Survey
Published: 1987
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1987

About this map

The high Sierra country of the Eldorado National Forest defines this terrain, where the South Fork Rubicon River and Rubicon River carve deep through the granite landscape. This 1950 survey, photorevised in 1973, captures a period of transition for the region’s water management and recreation. The appearance of the Union Valley Reservoir in the southern portion of the sheet reflects the mid-century expansion of hydroelectric and storage infrastructure, while the Georgetown Divide Ditch traces a legacy of earlier hydraulic engineering winding across the mountainside.

Local history centers on small outposts like Uncle Toms Cabin and the Hardess Guard Sta. For those studying the evolution of forest management, the Robbs Peak Lookout stands as a prominent landmark overlooking Robbs Valley. Pack trails like the Ellicott Trail and Hunters Trail provide a window into the era before extensive road development, connecting remote spots like Ditch Camp and the South Fork Camp Ground.