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1962 Map of Keystone

Name: 1962 Topographic Map of Keystone
Creator: U.S. Geological Survey
Published: 1987
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1987

About this map

Keystone and the rugged foothills of the Sierra Nevada define this landscape at the intersection of Tuolumne, Calaveras, and Stanislaus counties. The Sierra RR cuts through the eastern portion of the quadrangle, serving as a critical infrastructure link alongside the Hetch Hetchy Aqueduct, which traverses the center of the sheet. To the northwest, the Stanislaus River is harnessed at Tulloch Dam, marking the edge of Table Mountain.

Evidence of ranching and early fire management appears through the Bargeson Ranch and the Calif Div Forestry station. Elevation is dominated by the high point at Rushing Mtn, which features the Big Hill Lookout. This survey, updated with revisions from the 1980s, captures the complex water and rail networks that supported the region's development, from the industrial Claypit to the various mining prospects scattered along Green Spring Run.