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1962 Map of Wallace

Name: 1962 Topographic Map of Wallace
Creator: U.S. Geological Survey
Published: 1991
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1991

About this map

The Mokelumne River corridor undergoes a significant transformation on this early 1960s survey, dominated by the newly developing Camanche Reservoir. Blue hatching indicates the extensive areas slated for submersion by the reservoir at elevation 236, a change that fundamentally altered the geography of local settlements like Camanche and Lancha Plana. The landscape is heavily marked by industrial history, featuring numerous Dredge Tailings, Quarries, and Tailings piles that speak to decades of resource extraction along the riverbanks.

Further south and west, the terrain transitions into a network of ranching and early utility infrastructure. The Mokelumne Aqueduct cuts across the center, while small crossroads and ranch sites like Wallace, Goodmans Corner, and Rocabella Ranch anchor the local road system. From the heights of Bald Mtn and Sugarloaf to the rail siding at Burson (Helisma Sta), the map documents a California gold country landscape at the precise moment it was being reshaped for modern water management and infrastructure.