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1897 Map of Sonora

Name: 1897 Topographic Map of Sonora
Creator: U.S. Geological Survey
Published: 1897
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1897

About this map

Sonora serves as the focal point for this late nineteenth-century landscape, where the Sierra Nevada foothills are defined by a complex network of mining claims and small settlements. The survey captures the region's industrial backbone, featuring notable sites like the Red Cloud Mine, Olsen Mine, and Quail Mine scattered among the ridges and gulches. Water management for mining and agriculture is evident through the presence of the Turlock Canal and infrastructure such as the Hobron Mill and Benton Mill.

Transit through the winding terrain relied on established crossings like Ward Ferry, Split Rock Ferry, and the Moffat Bridge. From the northern reaches of Tuttletown to the southern edge at Hornitos, the map delineates a period of transition as hard-rock mining and hydraulic works shaped the foothills. Genealogists can trace family footprints across numerous small flats and camps, including French Flat, Marshs Flat, and Deer Flat, which were central to the area's local history during the post-Gold Rush era.