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2020 Map of Foundation Ridge

Name: 2020 Topographic Map of Foundation Ridge
Creator: U.S. Geological Survey
Published: 2020
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2020

About this map

Snoqualmie National Forest dominates this section of the Cascade Range, where the topography is defined by prominent divides and high-elevation meadows. The central Foundation Ridge and Divide Ridge serve as the primary hydrologic separators, directing runoff into a complex network of creeks including S Fork Cowiche Cr and N Fork Ahtanum Cr. These drainage patterns are punctuated by numerous high-country clearings such as Pickle Prairie Meadows and Sleepy Park Meadow, which historically served as vital landmarks for navigation and seasonal grazing.

Transport through this backcountry is facilitated by a system of primitive routes, including the 4WD Divide Ridge track and the Foundation Creek Rd. Notable summits like Strobach Mtn and Dome Peak overlook significant topographical features like Hacket Canyon and Dead Horse Flats. The map provides a clear view of the wilderness management boundaries within Yakima County, reflecting the intersection of natural resource geography and forest service infrastructure.