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1989 Map of Ophir Creek
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1989 Map of Ophir Creek

USGS Topo · Published 1989

About this map

The Continental Divide anchors this high-elevation Montana landscape, tracing the border between Powell and Lewis and Clark counties. Steep ridges and deep gulches define the area, where the headwaters of Ophir Creek and Threemile Creek drain away from the peaks of Black Mountain and Illinois Ridge. This 1989 provisional survey highlights a landscape heavily marked by mineral exploration and extraction along the slopes, particularly near Blackfoot City.

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Map Details

Date Portrayed1989
Date Published1989
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions22 x 26.8 inches

Editions of this 1989 Ophir Creek Map

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

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain