Sulphur Spring is a spring located in Napa County, California. It appears on the Brooks USGS 7.5-minute topographic quadrangle. The nearest populated place is Monticello (historical), approximately 4.8 miles to the S.
Napa County · California
Sulphur Spring is a spring located in Napa County, California. It appears on the Brooks USGS 7.5-minute topographic quadrangle. The nearest populated place is Monticello (historical), approximately 4.8 miles to the S.