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1918 Map of Collinsville

Name: 1918 Topographic Map of Collinsville
Creator: U.S. Geological Survey
Published: 1918
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1918

About this map

The confluence of the Sacramento River and San Joaquin River dominates this early twentieth-century survey, revealing an intricate network of waterways and reclaimed delta lands. In the southern portion, the growing industrial and rail hub of Antioch is a focal point, served by the Atchison Topeka and Santa Fe and Southern Pacific railroads. The map documents the importance of river transport via several key landings, such as Montezuma Landing, Marsh Landing, and Perley Landing, which provided essential access for the surrounding agricultural and ranching operations.

North of the river, the Montezuma Hills rise above the delta, featuring the small settlement of Collinsville near the mouth of the Montezuma Slough. The landscape is a mix of tidal marsh and large island tracts like Sherman Island and Winter Island, intersected by smaller channels like Mayberry Slough and New York Slough. This detailed record captures the delta's transition as rail infrastructure began to compete with established maritime trade routes.