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1953 Map of Antioch South

Name: 1953 Topographic Map of Antioch South
Creator: U.S. Geological Survey
Published: 1969
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1969

About this map

Coal Mine Tunnels and early industrial remains dot the landscape south of Antioch in this mid-century survey. The transition from industrial mining to recreation and residential growth is evident, as the northern edge shows urban expansion while the southern canyons preserve historical markers of the region's coal-producing past. Notable sites include the former settlements of Somersville and Stewartville, alongside the Morgan Territory Sch (Aban'd) and the County Jail Farm.

Water management infrastructure, critical to the region's development, is prominently mapped through the Contra Costa Canal and the Mokelumne Aqueduct traversing the valleys. To the south, the terrain becomes more complex near Mt Diablo Base Line, where the Morgan Territory gives way to a network of steep canyons like Irish Canyon and Marsh Creek Canyon. The map records a moment before widespread suburbanization fully reached into Lone Tree Valley and Briones Valley.