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1955 Map of Twin Falls

Name: 1955 Topographic Map of Twin Falls
Creator: U.S. Geological Survey
Published: 1974
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1974

About this map

The Snake River carves a dominant path across this mid-century landscape, anchoring a network of agricultural settlements and infrastructure in southern Idaho. Significant irrigation and power developments are visible through the C. J. Strike Reservoir, Milner Lake, and Wilson Lake Reservoir, which supported the growth of regional hubs like Twin Falls, Jerome, and Gooding. The Union Pacific railroad lines parallel the river and U.S. 30, tracing the vital transportation corridor that linked towns such as Glenns Ferry, Bliss, and Wendell.

Beyond the irrigated valley, the terrain shifts to the expansive Saylor Creek Air Force Range and the distinctive volcanic topography of Black Mesa and Notch Butte. The southern portion of the map transitions into the timbered highlands of the Sawtooth National Forest. This survey captures the region during a period of established reclamation and military presence, documenting the precise locations of small rail stops like Owenza and Dietrich alongside major landmarks like Berger Butte and Antelope Pocket.