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1998 Map of Alta, 2002 Print
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1998 Map of Alta

USGS Topo · Published 2002

About this map

The settlement of Alta serves as the focal point for this survey of the Montana-Idaho borderlands, situated along the West Fork Bitterroot River. The landscape is defined by the high elevations of the Bitterroot National Forest, where steep drainages like Castner Creek and Hughes Creek feed into the river valley. Resource extraction and forest management are central to the area's history, evidenced by the Old Alta Ranger Sta (Site) and various mining operations. Hardrock mining ventures such as the Lucky Joe Mine and the Copper Queen Mine are mapped alongside scattered prospects, a Mine Shaft, and multiple adits. The terrain reaches its peaks at Thunder Mountain and along the prominent Than Wilkerson Ridge, while the Salmon River Divide Trail follows the ridge line that marks the boundary between Ravalli and Lemhi counties.

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Map Details

Date Portrayed1998
Date Published2002
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions21.7 x 26.7 inches

Editions of this 1998 Alta Map

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

Historical Maps of Alta Through Time

287 maps found

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain