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1951 Map of Petaluma Point

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

USGS Topo · Published 1951

About this map

San Pablo Bay dominates this mid-century survey, revealing the complex hydrologic and industrial edge of the northern San Francisco Bay. Extensive mud flats and marshlands are defined by a network of engineered features, including a prominent Levee system protecting Tubbs Island and multiple navigation aids such as a Beacon and various Markers. The map documents the northern entry of Petaluma Creek and the tidal reaches of Novato Cr and Gallinas Creek.

Transportation and infrastructure are concentrated along the coastline, where the Northwestern Pacific railroad and a new 4 Lane highway pass through the settlement of Rose. To the south, the landscape transitions into the hills of San Pedro Santa Margarita y Las Gallinas, featuring the historic shrimp fishing site at China Camp and a significant Military Reservation. This record captures the region just as post-war development began to interface with traditional bayfront industries and tidal wetlands.