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1948 Map of Mokelumne Hill

Name: 1948 Topographic Map of Mokelumne Hill
Creator: U.S. Geological Survey
Published: 1960
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1960

About this map

Mokelumne Hill and the surrounding Gold Country terrain of Amador and Calaveras Counties are detailed in this post-war topographical study based on 1946 aerial photography. The landscape is defined by the deep canyons of the Mokelumne River and its various forks, supporting a network of water infrastructure including the Electra Tunnel and Electra Powerhouse. Settlement patterns reflect both active communities like Pine Grove and West Point, and remnants of earlier eras noted as sites, such as Butte City and Rich Gulch.

Hard-rock mining history is preserved through numerous named claims and shafts, including the Amador-Columbia Mine and Yellow Aster Mine. The map also captures specialized land uses of the late 1940s, from the California Youth Authority facility to the Victory Dude Ranch. Local education is marked by the New York Ranch School and Milligan School, while the rugged heights of Mt Zion and Mt Crossman overlook the complex system of canals, siphons, and flumes that moved water through this industrial landscape.