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1903 Map of Elcajon

Name: 1903 Topographic Map of Elcajon
Creator: U.S. Geological Survey
Published: 1909
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1909

About this map

San Diego Cuyamaca and Eastern Railroad tracks define the western corridor of this early 20th-century landscape, terminating near the settlement of Foster. The era's massive water infrastructure projects are prominent, notably the serpentine path of the San Diego Flume as it carries water across the rugged backcountry toward the coast. This wooden conduit navigates the terrain through a series of engineered passages, including the Cape Horn Tunnel, Monte Tunnel, and Lankesheim Tunnel.

Settlements like Lakeside, centered around Lindo Lake, and Bostonia anchor the agricultural Elcajon Valley, while the eastern uplands are occupied by the Capitan Grande Indian Reservation and Sequan Indian Reservation. The map captures a moment before suburban expansion, when small hubs like Dehesa and Alpine were isolated outposts connected by the winding waters of the San Diego River and Sweetwater River.