Sourdough Island is a island located in Missoula County, Montana. It appears on the Salmon Lake USGS 7.5-minute topographic quadrangle. The nearest populated place is Woodworth, approximately 5.1 miles to the E.
Missoula County · Montana
Sourdough Island is a island located in Missoula County, Montana. It appears on the Salmon Lake USGS 7.5-minute topographic quadrangle. The nearest populated place is Woodworth, approximately 5.1 miles to the E.