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2020 Map of Summit Ridge

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

USGS Topo · Published 2020

About this map

Summit Ridge serves as the high backbone for this landscape, dividing a complex network of canyons and hollows that drain toward the eastern boundary. In the southeast corner, the Deschutes River cuts a deep course along the border of Wasco and Sherman counties, joined by the mouth of Croft Canyon. The land is defined by these deep incisions into the plateau, with drainage features like Davis Cr, Bull Run Canyon, and Dry Canyon carving out the terrain.

Human activity is oriented around long ridge-top roads and market routes that follow the natural topography to avoid the steep drops of the surrounding canyons. Routes such as Wrentham Market Rd and Roberts Market Rd provide access to the interior, while named landmarks like Windmill Canyon, Standard Hollow, and Stubb Hollow indicate a landscape long used for ranching or dryland agriculture. The map captures a high-elevation environment where the transition from flat ridges to river-bottom canyons dominates the local geography.