Wood Island is a former island in Marin County, California, formerly in the Corte Madera Creek (upstream of San Francisco Bay) but now surrounded by land. Its coordinates are 37°56′37″N 122°30′42″W / 37.94361°N 122.51167°W / 37.94361; -122.51167 (Wood Island), and the United States Geological Survey measured its elevation as 13 ft (4.0 m) in 1981. It appears in a 1954 USGS map of the region. In the 1960s, its principal owner was Spero Spiliotis. In 1969, the city of Larkspur passed a resolution of intent to annex the island, and in the 1970s, a ferry terminal had been proposed.