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1952 Map of Omo Ranch

Name: 1952 Topographic Map of Omo Ranch
Creator: U.S. Geological Survey
Published: 1975
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1975

About this map

Henrys Diggings and the surrounding Sierra foothills define this landscape, where mining activity once blanketed the ridges and gulches north of Omo Ranch. The map reveals a dense concentration of named claims and workings, including the Gloryanna Mine, Caldor Mine, and the Gold Note Mine near Sopiago Creek. These sites reflect the intensive resource extraction that shaped local development from the mid-19th century onward.

Settlement patterns show the evolution of the area, featuring the locations of the Indian Diggings School and the remote Dogtown community. While some locations like Caldor and Brownsville are noted as former sites, the inclusion of the Andreasson Cemetery and Willow School provides specific points of interest for genealogists tracing pioneer families. The rugged geography is anchored by the Middle Fork and South Fork Cosumnes River, which carved the deep canyons that dictated the placement of early roads and mining camps.