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1948 Map of Mesa Grande

Name: 1948 Topographic Map of Mesa Grande
Creator: U.S. Geological Survey
Published: 1956
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1956

About this map

The Mesa Grande Indian Reservation and the waters of Lake Henshaw dominate this late-1940s landscape in northeastern San Diego County. This area is characterized by a high-altitude mining and ranching economy, with several notable gemstone and mineral sites such as the Himalaya Mine, Esmeralda Mine, and San Diego Mine scattered throughout the Cleveland National Forest. The map captures the small community of Mesa Grande and its associated Mesa Grande Sch, which served the local population near the edge of Pamo Valley.

Transport through this terrain was largely defined by fire and access roads like the Mesa Grande Truck Trail. In the northeast, the San Luis Rey River feeds into the lake near Valle De San Jose (Portilla), a landscape shaped by early California land grants. From the Lookout atop Black Mtn to the remote Almond Ranch, the map provides a look at the rural backcountry before significant modernization.