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1948 Map of Moccasin

Name: 1948 Topographic Map of Moccasin
Creator: U.S. Geological Survey
Published: 1987
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1987

About this map

The Hetch Hetchy Aqueduct cuts across this Tuolumne County landscape, marking the critical infrastructure of the mid-20th century. The map illustrates a high-elevation terrain defined by the expansion of the Don Pedro Reservoir and the presence of localized water management at Moccasin Res and Priest Reservoir. Settlement is concentrated at the historic junction of Big Oak Flat and the small communities of Moccasin and Priest.

From the heights of Tip Top Pk and Moccasin Peak, the land falls away toward intricate drainages like Kanaka Creek, Deer Creek, and Grizzly Gulch. The 1980s-era revisions, shown in purple, document the shifting shorelines of the reservoir, while the original 1940s topography preserves the locations of local landmarks such as Marshs Flat and the prominent Peñon Blanco Ridge in the southern reaches of the quadrangle.