Grass Flat Island is a island located in Warren County, Pennsylvania. It appears on the Warren USGS 7.5-minute topographic quadrangle. The nearest populated place is Grunderville (historical), approximately 1.0 miles to the SE.
Warren County · Pennsylvania
Grass Flat Island is a island located in Warren County, Pennsylvania. It appears on the Warren USGS 7.5-minute topographic quadrangle. The nearest populated place is Grunderville (historical), approximately 1.0 miles to the SE.