1981 Map of Thorn Lake
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1981 Map of Thorn Lake

USGS Topo · Published 1981

About this map

The arid high-desert floor of the Fort Rock Valley dominates this 1981 survey, revealing a landscape defined by scarce water resources and ancient geology. Scattered throughout the quadrangle are numerous wells and the specifically designated BM 4319 Government Well, illustrating the critical importance of groundwater management in this part of Lake County. The presence of the American Fossil Mine and an additional unnamed Mine suggests a focus on the region's unique paleontological or mineral deposits rather than traditional metal mining.


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Map Details

Date Portrayed1981
Date Published1981
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions21.9 x 26.7 inches

Editions of this 1981 Thorn Lake Map

This is the sole edition of this map. No revisions or reprints were ever made.


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Source Details

CopyrightPublic Domain