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1997 Map of North Sister, 2001 Print
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1997 Map of North Sister

USGS Topo · Published 2001

About this map

North Sister and Middle Sister dominate this high-altitude landscape along the border of Lane and Deschutes counties. The terrain is defined by volcanic activity, featuring extensive lava fields and distinctive features like the Ahalapam Cinder Field, Four In One Cone, and the jagged Obsidian Cliffs. The Pacific Crest National Scenic Trail winds through these summits, passing Matthieu Lakes and crossing over Opie Dilidock Pass. Numerous glaciers, including the Collier Glacier and Renfrew Glacier, are mapped in detail on the mountain flanks. Deep in the Three Sisters Wilderness, commemorative markers such as the Bronaugh Memorial Plaque and Prouty Memorial Plaque reflect the area's legacy of exploration and mountaineering within the Willamette National Forest.

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Map Details

Date Portrayed1997
Date Published2001
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions21.9 x 26.8 inches

Editions of this 1997 North Sister 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