Loading map...

1942 Map of Mare Island

Name: 1942 Topographic Map of Mare Island
Creator: U.S. Geological Survey
Published: 1942
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1942

About this map

San Pablo Bay anchors this complex intersection of waterways and industrial corridors during the early years of the Second World War. The topography is dominated by the Mare Island naval facility and the growing urban center of Vallejo, which served as a critical hub for maritime logistics. The shoreline is a dense network of tidal sloughs, including Napa River and Sonoma Creek, winding between reclaimed marshlands such as Tubbs Island and Edgerley Island.

Transportation networks define the regional development, with the Northwestern Pacific and Southern Pacific railroads cutting through the landscape to serve small agricultural and industrial outposts like Schellville, Napa Junction, and the manufacturing sites at Nitro and Hercules. Along the southern reaches near Carquinez Strait, the map details specialized sites like the oil facilities at Oleum and the Refugio Landing, illustrating the importance of the northern bay area to California's fuel and munitions production during this era.