Sidney Flat is a flat located in Contra Costa County, California. It appears on the Antioch South USGS 7.5-minute topographic quadrangle. The nearest populated place is Somersville, approximately 1.0 miles to the S.
Contra Costa County · California
Sidney Flat is a flat located in Contra Costa County, California. It appears on the Antioch South USGS 7.5-minute topographic quadrangle. The nearest populated place is Somersville, approximately 1.0 miles to the S.