Blackstone Reservoir is a reservoir located in Owyhee County, Idaho. It appears on the Blackstone Reservoir USGS 7.5-minute topographic quadrangle. The nearest populated place is Grasmere, approximately 6.1 miles to the SW.
Owyhee County · Idaho
Blackstone Reservoir is a reservoir located in Owyhee County, Idaho. It appears on the Blackstone Reservoir USGS 7.5-minute topographic quadrangle. The nearest populated place is Grasmere, approximately 6.1 miles to the SW.