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1947 Map of Pasadena Valley

Name: 1947 Topographic Map of Pasadena Valley
Creator: U.S. Geological Survey
Published: 1968
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1968

About this map

The Snake River carves a deep path through Elmore County on this 1947 survey, revealing a landscape defined by volcanic geology and the essential movement of water. Below the towering Black Mesa, the Pasadena Valley serves as a pocket of agricultural activity, anchored by the Pasadena Valley Sch. The map reveals the intricate irrigation infrastructure necessary for life here, including the King Hill Main Canal and various siphons that move water across the uneven terrain.

Historical transportation corridors are layered along the riverbanks, where the Oregon Short Line (Union Pacific) railroad follows the water's edge. Further south, the path of the Old Oregon Trail is clearly delineated, passing the Pilgrim Stage Sta Historic Site. From the heights of Jolley Flat to the depths of Rosevear Gulch, this map documents the early post-war development of Idaho's high desert river systems.