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1955 Map of Lone Tree Creek, 1976 Print
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1955 Map of Lone Tree Creek

USGS Topo · Published 1976

About this map

The ridge-and-canyon landscape of the Diablo Range comes into focus through this 1950s survey, updated with 1970s aerial data. The map tracks the vital water infrastructure of the Hetch Hetchy Aqueduct as it cuts across the northern edge of the quadrangle. High-elevation terrain is defined by dramatic features like North Ridge, Smiths Ridge, and Pegleg Ridge, revealing a history of mineral extraction and spring-fed hydrology. Mining history is prominent with the Ladd Mine and the Buckeye Mines tucked into the steep drainages. Natural water sources are scattered throughout the canyons, including Lone Tree Mineral Spring, Blue Rock Spring, and Sperry Springs, which often served as critical landmarks for early ranching and prospecting in these dry hills. The intersection of San Joaquin, Stanislaus, and Alameda counties underscores the area's role as a rugged borderland.

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Map Details

Date Portrayed1955
Date Published1976
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions22 x 26.8 inches

Editions of this 1955 Lone Tree Creek Map

Historical Maps of Alameda County Through Time

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain