1941 Map of Tornillo
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1941 Map of Tornillo

USGS Topo · Published 1941

About this map

The Rio Grande defines the international boundary between Texas and Mexico in this detailed survey of the Upper Rio Grande Valley. This landscape is characterized by a complex network of irrigation and drainage infrastructure essential to the border economy, including the Island Main Drain, Tornillo Canal, and Alamo Alto Canal. These systems support the fertile lands of San Elizario Island, where small settlements like Fabens and Tornillo flourished along the tracks of the Southern Pacific railroad.


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Map Details

Date Portrayed1941
Date Published1941
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:62,500
Physical Dimensions18 x 20.9 inches

Editions of this 1941 Tornillo Map

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


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Source Details

CopyrightPublic Domain