Black Rock is a island located in San Juan County, Washington. It appears on the Blakely Island USGS 7.5-minute topographic quadrangle. The nearest populated place is Thatcher, approximately 2.5 miles to the WNW.
San Juan County · Washington
Black Rock is a island located in San Juan County, Washington. It appears on the Blakely Island USGS 7.5-minute topographic quadrangle. The nearest populated place is Thatcher, approximately 2.5 miles to the WNW.