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1947 Map of Helm
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1947 Map of Helm

USGS Topo · Published 1947

About this map

Helm sits at the junction of the Southern Pacific railroad and a grid of rural agricultural roads, serving as a vital transport hub for the central San Joaquin Valley in the late 1940s. The landscape is defined by its extensive water management system, centered on the Fresno Slough and Fish Slough. The presence of the Diversion Dam and the Fresno Slough Bypass highlights the engineering required to control regional irrigation and drainage. To the north, the Raisin City Oil Fields introduce industrial extraction to the predominantly agricultural terrain. This survey captures a moment when the valley's economy relied on a precise network of siphons, windmills, and canals like the Stinson Canal to sustain its growth.

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Map Details

Date Portrayed1947
Date Published1947
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24000
Physical Dimensions21 x 26.2 inches

Editions of this 1947 Helm Map

This is the sole edition of this map. No revisions or reprints were ever made.

Historical Maps of Helm Through Time

529 maps found

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain