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1969 Map of Big Rock Flat

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

USGS Topo · Published 1984

About this map

Anson Wright Memorial Park and the rugged northern reaches of the Umatilla National Forest define this landscape in the Blue Mountains. The map reveals a remote geography of high flats and steep drainage canyons, where early timber and ranching operations are evidenced by sites like Reeds Mill and Parkers Mill. These small industrial footprints, alongside the Big Rock Flat Airstrip, suggest a working landscape deeply tied to the natural resources of Morrow County.

Water sources are a primary focus of the topography, with numerous family-named landmarks such as Bleakman Spring, Sperry Spring, and Harrington Spring dotting the ridges. The complex terrain features distinctive local nomenclature, from the descriptive Beaver Slide Ridge and Snowshoe Flat to the curious Morphine Ridge and its namesake creek. This 1960s survey, with early 1980s updates, provides a detailed look at the backcountry infrastructure and livestock watering points of the era.