Winter Island is a island located in Contra Costa County, California. It appears on the Antioch North USGS 7.5-minute topographic quadrangle. The nearest populated place is Hooper (historical), approximately 1.6 miles to the S.
Contra Costa County · California
Winter Island is a island located in Contra Costa County, California. It appears on the Antioch North USGS 7.5-minute topographic quadrangle. The nearest populated place is Hooper (historical), approximately 1.6 miles to the S.