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1995 Map of Cahill Mountain

Name: 1995 Topographic Map of Cahill Mountain
Creator: U.S. Geological Survey
Published: 1998
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1998

About this map

Cahill Mountain dominates this high-country terrain within the Umatilla National Forest, where deep drainages like Cougar Canyon and Lewis Hollow carve through the landscape. The map captures a moment when land use was defined by forest service infrastructure and old mountain passages, most notably the Patit (Site) located along North Patit Creek. The presence of the Thorn Lookout and the Pioneer Memorial Park suggests a region valued for its vantage points and conservation history during the mid-1990s.

Transportation through this portion of Columbia County relies on a network of established forest routes and ridges. The Kendall Skyline Road traces the high ground, while the Malcolm Grade and Bruce Road provide access to the lower gulches. Water resources are central to the geography here, with the North Fork Touchet River and multiple springs feeding into the complex system of ravines including Harley Gulch and Rodgers Gulch.