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1985 Map of Thunderbolt Creek, 1986 Print
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1985 Map of Thunderbolt Creek

USGS Topo · Published 1986

About this map

The Continental Divide winds through this high-altitude landscape of the early 1980s, marking the hydrological boundary between the Helena National Forest and Deerlodge National Forest. This montane region is defined by its series of towering summits, including Electric Peak, Thunderbolt Mountain, and Cliff Mountain, which overlook a network of deep drainages. Mining activity is evident through numerous identified prospects concentrated near Finn Gulch, Alta Gulch, and the Boulder River, hinting at the geological explorations that have long characterized the Powell and Jefferson County border.

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Map Details

Date Portrayed1985
Date Published1986
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions22 x 26.8 inches

Editions of this 1985 Thunderbolt Creek Map

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

Historical Maps of Powell County Through Time

196 maps found

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain