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2017 Map of Peterson Ridge

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

USGS Topo · Published 2017

About this map

Peterson Ridge and the high country of eastern Umatilla County are defined here by a series of steep drainages and prominent peaks. The landscape is carved by the N Fork Walla Walla River, which flows through the southern portion of the quadrangle, and numerous forks of Cottonwood Cr that reach into the northern heights. High points like Pikes Peak, Saddle Mtn, and Government Mtn dominate the horizon, illustrating the transition from deep valley floors to upland ridges.

Transportation through this difficult terrain is marked by a network of winding mountain roads, including the Morman Grade Rd and Government Mountain Rd. The small settlement of Little Meadows and the topographic bowl of Pumpkin Hollow provide evidence of more habitable pockets amidst the canyons. This 2017 survey by the U.S. Geological Survey captures the modern configuration of these remote access routes and water systems, which have long dictated the movement of people and timber through the Blue Mountains.