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1968 Map of Oss Peak

Name: 1968 Topographic Map of Oss Peak
Creator: U.S. Geological Survey
Published: 1987
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1987

About this map

Lake Chelan defines the southwestern corner of this survey, where the small landing at Dutch Harbor sits at the base of the steep Cascades. The map documents a complex system of hydraulic infrastructure, most notably the Siphon Grade and Aqueduct Road, which trace the contours of the mountains to manage water across the demanding terrain. These engineering features represent the mid-century efforts to harness the region's steep hydrology for local utility.

Rising above the water, the landscape is dominated by the high summits of Oss Peak and Fox Peak, situated along the boundary between the Okanogan National Forest and Wenatchee National Forest. The network of forestry roads, such as Gold Creek Road and Poison Creek Road, provides access to remote drainages like McFarland Creek and Saint Louis Creek. Small clearings and settlements like Camp Four are visible, alongside specialized landmarks such as Ski Peak and Poison Springs.