Hog Island (Petaluma River)

Hog Island is an island in the wetlands of the Petaluma River in Sonoma County, California, located at 38°09′33″N 122°32′18″W near the Marin County line. San Antonio Creek enters the river just west of this island.

Map of Hog Island, California 94954, USA

There is another island with this name in the Bay Area, Hog Island, in Tomales Bay in Marin County.