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1948 Map of Duckwall Mtn

Name: 1948 Topographic Map of Duckwall Mtn
Creator: U.S. Geological Survey
Published: 1979
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1979

About this map

Stanislaus National Forest terrain dominates this 1940s landscape, defined by the deep canyons carved by the Clavey River and the Tuolumne River. The topographic detail highlights the high-elevation ridges of the Sierra Nevada foothills, including Duckwall Ridge and the prominent Butcher Knife Ridge. Human activity is primarily limited to isolated outposts and high-country landmarks like the Duckwall Mtn Lookout and the timber-related operations suggested by Camp 45.

Historical grazing and seasonal camps are reflected in labels like Quinn Ranch and Thompson Meadow. The geography is anchored by the Mt Diablo Base Line, which serves as the primary east-west survey reference. Water sources are critical in this landscape, with numerous springs such as Rackerby Jack Spr and Walton Cabin Spr appearing alongside named drainages like Thirteenmile Creek and Hunter Creek.