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2023 Map of Yesmowit Canyon

Name: 2023 Topographic Map of Yesmowit Canyon
Creator: U.S. Geological Survey
Published: 2023
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2023

About this map

Ahtanum Ridge and Rattlesnake Ridge dominate this interior landscape of central Washington, where a complex network of canyons and drainages defines the terrain. The presence of Soda Springs along the North Fork Simcoe Creek points to the specific hydrology of this region within the Yakima territory. The map details a rugged system of watercourses including South Fork Ahtanum Creek in the north and the southern flow of Wahtum Creek, revealing how the land was partitioned and accessed through routes like Wrentham Mkt Rd and Old Maid Canyon Rd.

A series of evocatively named landforms such as Poison Canyon, Old Maid Canyon, and Diamond Dick Creek suggests a history of local naming conventions tied to early range use or specific incidents. This 2023 survey by the U.S. Geological Survey provides a modern topographic record of the Yakima County backcountry, tracing established BIA routes through the deep incisions of Yesmowit Canyon and the high points of Sedge Ridge.