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1949 Map of Santa Rosa

Name: 1949 Topographic Map of Santa Rosa
Creator: U.S. Geological Survey
Published: 1951
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1951

About this map

Northwestern Pacific rail lines and postwar aviation infrastructure define this late-1940s landscape of the Northern California coast. The map illustrates a transitional era where military sites like Santa Rosa Army Air Field and Hamilton Field stand alongside established agricultural corridors in the Cotati Valley and Berryessa Valley. Along the coastline, small outposts and historical sites such as Fort Ross and the Anchor Bay Settlement dot the cliffs between Point Arena and Bodega Bay.

Inland, the topography is dominated by the volcanic profile of Mt St Helena and the Vaca Mountains, which separate the coastal drainage of the Russian River from the western edge of the Sacramento Valley. This detailed survey identifies the complex intersection of land and water at the north end of San Pablo Bay, including Mare Island and the mouth of the Napa River, providing a clear view of the regional transport network before the major expansion of the modern highway system.