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1969 Map of Delamar NW

Name: 1969 Topographic Map of Delamar NW
Creator: U.S. Geological Survey
Published: 1973
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1973

About this map

The South Pahroc Range dominates the western portion of this 1969 field survey, its steep contours contrasting with the expansive basin to the east. This transition from mountainous terrain into the Delamar Valley reveals a landscape managed for water access in an arid environment. The presence of the Cyanide Reservoir and Chalk Reservoir indicates the critical infrastructure required for ranching or industrial activity during this era.

Tracing the southeast through Delamar Flat, the drainage patterns of Delamar Wash and Cedar Wash define the local topography. A network of jeep trails provides the primary means of navigation across the flats and into the foothills, linking the valley floor to the Powerline Reservoir. This map documents a specific moment in the mid-20th-century development of Lincoln County's high desert, where water management and utility corridors shaped the use of public lands.