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1963 Map of Sourdough Peak, 1987 Print
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1963 Map of Sourdough Peak

USGS Topo · Published 1987

About this map

Sourdough Peak and its surrounding ridgelines dominate this high-elevation interior landscape of central Idaho during the 1960s. The map delineates the administrative boundaries of the Nez Perce National Forest and the Gospel Hump Wilderness, showcasing a terrain defined by steep drainage systems and narrow divides. Named water features like Snoose Creek, Blue Ridge Creek, and Kentucky Creek carve through the deep valleys between heights such as Baking Powder Mountain and Square Mountain. Infrastructure is remarkably sparse, consisting primarily of the Santiam Jeep Trail and primitive wilderness paths. This 1987 update, based on 1963 field checks and 1984 aerial revisions, captures the area's transition into formal wilderness protection, providing a clear record of the backcountry before modern recreation patterns shifted, including the remote Twin Lakes and Moore Lake basins.

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Map Details

Date Portrayed1963
Date Published1987
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions22 x 26.7 inches

Editions of this 1963 Sourdough Peak Map

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain