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1979 Map of Pacific Valley
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1979 Map of Pacific Valley

USGS Topo · Published 1979

About this map

The high Sierra Nevada landscape where Alpine County’s steep granite ridges meet the North Fork Mokelumne River is captured here as it appeared in the late 1970s. This survey details a transition point between several protected wilderness areas, including the Eldorado National Forest, Toiyabe National Forest, and Stanislaus National Forest. The map is particularly valuable for tracing historical footpaths and pack routes, such as the Pack Trail segments that navigate the drainage around Twin Lakes and Lower Blue Lake.

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Map Details

Date Portrayed1979
Date Published1979
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions21.8 x 26.7 inches

Editions of this 1979 Pacific Valley Map

Historical Maps of Alpine County Through Time

63 maps found

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain