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1959 Map of Petaluma Point

Name: 1959 Topographic Map of Petaluma Point
Creator: U.S. Geological Survey
Published: 1981
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1981

About this map

The tidal marshes and mudflats of the northern reaches of San Pablo Bay define this mid-century topographic record, where the Petaluma River meets the bay. On the western shore, the Northwestern Pacific railroad tracks skirt the edge of Black Point, passing through a landscape heavily modified by a network of levees. Significant landforms like Day Island and Petaluma Point stand out against the expansive mudflats, indicating the complex hydrology of the region before further modern development.

Southward, the terrain transitions into the San Pedro Santa Margarita y Las Gallinas area, where North San Pedro Road provides access to the shoreline near China Camp. The map details various maritime navigational aids, including a Rescue Tower and numerous beacons, highlighting the importance of the bay for transport. In the northeast, the San Pablo Bay National Wildlife Refuge encompasses Tubbs Island, preserving the characteristic salt marsh environment.