Upper Mark Island is a island located in Sagadahoc County, Maine. It appears on the Boothbay Harbor USGS 7.5-minute topographic quadrangle. The nearest populated place is Trevett, approximately 1.5 miles to the ENE.
Sagadahoc County · Maine
Upper Mark Island is a island located in Sagadahoc County, Maine. It appears on the Boothbay Harbor USGS 7.5-minute topographic quadrangle. The nearest populated place is Trevett, approximately 1.5 miles to the ENE.