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1917 Map of Portneuf

Name: 1917 Topographic Map of Portneuf
Creator: U.S. Geological Survey
Published: 1917
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1917

About this map

Portneuf Valley serves as a vital corridor for settlement and early industrial water management in 1917, centered around the community of Chesterfield. This era shows a landscape transitioning through major engineering projects, notably the Portneuf and Marsh Valley Irrigation Co Feeder Canal and the newly established Portneuf Reservoir. These irrigation works were essential for supporting the agricultural life of the valley floor, where several rural educational centers like Goech School, Rigby School, and Kelly School served the local ranching families.

The eastern portion of the map is dominated by a ridge system that separates the valley from the high country of the Cache National Forest, while the northern border touches the Fort Hall Indian Reservation. Transportation is anchored by the Oregon Short Line railroad passing through the southern reach near Kinport. This survey captures the complex water distribution network, including Eighteenmile Creek and Topons Cr, that sustained this portion of Idaho before later 20th-century developments.