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1948 Map of Columbia

Name: 1948 Topographic Map of Columbia
Creator: U.S. Geological Survey
Published: 1956
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1956

About this map

Columbia Historic State Park stands as the centerpiece of this Mother Lode survey, capturing the preservation of an iconic gold-rush town alongside active ranching and mining operations in the late 1940s. The landscape is defined by the winding Stanislaus River and the massive silhouette of Table Mountain, which cuts through the center of the sheet. Historically significant settlements like Columbia, Vallecito, and Douglas Flat are shown with their early 20th-century footprints, connected by complex water systems such as the Columbia Ditch and Utica Ditch.

Evidence of the region's mineral wealth is everywhere, from the Carson Hill Mine to the Marble Quarries near Lord Spring. For those tracing local families, the map preserves the locations of smaller vanished locales like Squabbletown, Sawmill Flat, and Martinez. Natural landmarks, including the Moaning Caves and Natural Bridge near Sugarloaf Hill, illustrate the unique karst and volcanic geology that drew early explorers to this corner of Tuolumne County.