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2017 Map of Illahee Rock

Name: 2017 Topographic Map of Illahee Rock
Creator: U.S. Geological Survey
Published: 2017
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2017

About this map

Illahee Rock and the towering peaks of the Umpqua National Forest define this high-altitude landscape in Douglas County. The North Umpqua River carves a deep valley through the southern portion of the map, providing the primary corridor for movement and recreation. Historical access is traced through a network of National Forest Development Roads and timber-related tracks like Rosebud TS and Little Oak TS, connecting isolated riverside benches and flats.

Prominent geographical markers such as Marsters Bridge and Illahee Flats highlight the concentration of activity along the river's edge, while the surrounding terrain is punctuated by distinctive formations like Old Man Rock, Bartrums Rock, and the evocative Devils Stairway. The transition from the river basin to high ridges like Bradley Ridge and Ragged Ridge illustrates the extreme relief characteristic of the Cascades foothills, where steep drainages such as Rattlesnake Cr and Copeland Cr feed into the main waterway.