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1948 Map of Mokelumne Hill

Name: 1948 Topographic Map of Mokelumne Hill
Creator: U.S. Geological Survey
Published: 1985
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1985

About this map

The Mokelumne River carves a deep path through the Mother Lode in this late-1940s survey, marking the boundary between Amador and Calaveras counties. Centered on the historic settlement of Mokelumne Hill, the landscape reveals a complex network of gold-rush era infrastructure and later hydroelectric development. Notable landmarks include the powerhouse along Electra Road and the water systems of Lake Tabeaud and associated flumes.

Genealogists and local historians will find significant data in the numerous named properties such as Lombardi Ranch, McSorley Ranch, and Giuffra Ranch. The map also preserves the location of the Butte City Ruins and the Middle Bar (Site), alongside active or former extraction points like the Le Roi Mine and Blue Jay Mine. Educational and transport history is represented by the Milligan Sch and the high-elevation Ponderosa Way.