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1989 Map of Chiwaukum Mountains

Name: 1989 Topographic Map of Chiwaukum Mountains
Creator: U.S. Geological Survey
Published: 1989
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1989

About this map

The high Cascades of the Wenatchee National Forest are defined by sharp ridgelines and high-elevation basins in this late 1980s survey. Much of the area is protected within the Alpine Lakes Wilderness, a landscape shaped by glacial activity that left behind a dense concentration of subalpine lakes, including Loch Eileen, Chiwaukum Lake, and the remote Jason Lakes. The terrain is anchored by the massive Chiwaukum Mountains and the prominent Icicle Ridge to the south.

Travel through these granite peaks is limited to primitive routes such as the Pack Trail, which connects key crossings like Deadhorse Pass, Frosty Pass, and Ladies Pass. The drainage network is complex, with the South Fork Chiwaukum Creek and Icicle Creek carving deep valleys below summits like Grindstone Mountain and Snowgrass Mountain. This map records the wilderness character of the region before modern digital mapping, preserving the specific locations of named basins like Ewing Basin and landmarks like Cape Horn.