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1925 Map of Wilmington

Name: 1925 Topographic Map of Wilmington
Creator: U.S. Geological Survey
Published: 1931
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1931

About this map

Wilmington and San Pedro appear here during a transformative era of maritime and industrial expansion along the California coast. The landscape is defined by the heavy engineering of the Los Angeles Harbor, featuring complex infrastructure like the Turning Basin, East Basin, and Slip No 5. The transition from natural wetlands to a modern port is evident in the presence of Bixby Slough and various Salt Ponds alongside the newly carved Cerritos Channel.

Military and industrial dominance is marked by the sprawling Fort McArthur (Upper Reservation) and its Lower Res, while the Union Oil Refinery and the Southern California Edison Co Power Plant anchor the region's energy economy. Transit for workers and freight is facilitated by an extensive rail network, including the Pacific Electric and Southern Pacific lines, connecting the mainland to Terminal Island.