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1969 Map of Thompson Flat

Name: 1969 Topographic Map of Thompson Flat
Creator: U.S. Geological Survey
Published: 1984
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1984

About this map

Umatilla National Forest defines the character of this 1969 survey, showing a landscape of high plateaus and deep drainage systems within the Blue Mountains. The terrain is anchored by expansive features like Thompson Flat and Buckaroo Flat, separated by the steep relief of Potamus Point. These highlands are etched by a dense network of seasonal and perennial waters, including Potamus Creek, Matlock Creek, and Thompson Creek, which culminates at Thompson Falls.

Human activity is primarily centered on forest management and livestock grazing, evidenced by remote outposts such as Thompson Corral, Juniper Camp, and Florence Cabin. Water management is critical in this environment, as seen in the mapping of Matlock Waterhole, Divide Well, and Thompson Flat Well. The presence of several jeep trails and pack routes, including Section (Pack) and Groshen (Pack), suggests a landscape more accessible to horseback and rugged vehicles than standard transport during this era.