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1989 Map of Thrapp Mtn, 1993 Print
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1989 Map of Thrapp Mtn

USGS Topo · Published 1993

About this map

Okanogan National Forest land defines this terrain, which was documented during a series of field checks and aerial surveys in the late 1980s. The landscape is marked by substantial elevation changes, ranging from the heights of Thrapp Mtn and Pole Pick Mtn down through the steep descent of Finley Canyon. Water resources are central to the geography here, with Frazer Creek in the north and the South Fork Benson Creek flowing near Jay Ridge. Evidence of resource extraction and prospecting is visible in the northwest, specifically noted at the Red Shirt Mine and several prospect sites nearby. This provisional survey provides a precise record of the drainage patterns and peaks within Okanogan County, illustrating the high-country environment before the turn of the century.

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Map Details

Date Portrayed1989
Date Published1993
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions22.2 x 27.1 inches

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain