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1947 Map of Arecibo SE

Name: 1947 Topographic Map of Arecibo SE
Creator: U.S. Geological Survey
Published: 1947
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1947

About this map

The Rio Grande de Arecibo winds along the western edge of this 1940s topographic study, defining the boundary for the densely contoured terrain of the Arenalejos and Carreras districts. This preliminary survey, prepared during the early 1940s, illustrates a landscape transition from the river valley into the complex limestone karst formations typical of northern Puerto Rico. Small clusters of rural settlement like Bajadero and Domingo Ruiz are documented alongside vital social infrastructure, most notably the Escuela Segunda Unidad de Bajadero, which served as a central educational hub for the surrounding barrios.

Further inland, the map captures the dispersed residential patterns of Miraflores and Arrozal, where homes are scattered among the dramatic sinkholes and mogotes. This era represents a period of significant agrarian activity before modern industrialization, reflected in the network of secondary roads and trails connecting interior hamlets like Biafara and Ballajá to the larger coastal municipalities.