Long Canyon is a valley located in Contra Costa County, California. It appears on the Antioch South USGS 7.5-minute topographic quadrangle. The nearest populated place is Marsh Creek Springs, approximately 2.0 miles to the W.
Contra Costa County · California
Long Canyon is a valley located in Contra Costa County, California. It appears on the Antioch South USGS 7.5-minute topographic quadrangle. The nearest populated place is Marsh Creek Springs, approximately 2.0 miles to the W.