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1946 Map of El Yunque

Name: 1946 Topographic Map of El Yunque
Creator: U.S. Geological Survey
Published: 1946
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1946

About this map

The dense tropical topography of the Sierra de Luquillo dominates this 1940s survey, illustrating the complex network of mountain peaks and river headwaters within the Caribbean National Forest Luquillo Division. High elevations are marked by landmarks such as El Yunque, Mte Britton, and El Toro, while the lower slopes reveal established settlements like Mameyes (Palmer) and Jimenez. The map provides a detailed view of the regional hydrology, tracing the descents of the Rio Espiritu Santo, Rio Mameyes, and Rio Grande.

Infrastructure in this era is concentrated near the coast and forest edges, including the Escuela Casiano Cepeda and early recreation sites like the Area Recreo de la Mina. The documentation of numerous municipal boundaries, including Rio Grande and Naguabo, offers specific data for researchers tracing administrative and family lineages across these mountainous districts during the mid-twentieth century.