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1949 Map of Rio Grande SO

Name: 1949 Topographic Map of Rio Grande SO
Creator: U.S. Geological Survey
Published: 1949
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1949

About this map

Coastal sugar cultivation and early municipal development define this northeast Puerto Rico corridor in the late 1940s. The landscape is dominated by the industrial agricultural footprint of the colonias, including Colonia Mimi, Colonia Dolores, and Colonia Blasina, which were essential to the local economy. An intricate network of irrigation and drainage canals, such as Canal Gordiani and Canal Concella, crisscrosses the low-lying Ciénaga Baja near the mouth of the Río Herrera.

Inland, the urban center of Río Grande sits near the confluence of the Río Grande and the Río Espíritu Santo, showing the transition from rural estates to organized township. Educational and spiritual anchors like the Escuela Luis Calderón and Capilla de Perpetuo Socorro appear alongside residential clusters like Poblado Honduras. The map captures a coastal region defined by its reliance on the river systems and the North Atlantic shoreline.