1985 Map of Mount Irish SE

About this map

Pahranagat Valley dominates the eastern half of this 1980s provisional survey, revealing a landscape defined by the sharp transition between the valley floor and the high elevations of the Mount Irish Range. In this arid interior drainage basin, water movement is recorded by features like Silver Canyon and Logan Creek, which cut through the western slopes. The map captures the infrastructure of the late twentieth century, showing a major Transmission Line traversing the southern portion of the valley alongside primitive 4wd tracks that provide the only access into the steeper canyon reaches. This document is particularly useful for understanding the exact placement of survey markers such as BM 4357 and BM 4058 during a period when these Great Basin landforms were being systematically documented for resource management.