- Category: Water Feature
- Type: Island
- Latitude/Longitude: 57°39'18"N 7°16'37"W
- Eastings/Northings: 85363, 875062
- OS Grid: NF853750
- Mapcode Local: GBR 88FH.7MC
- Mapcode Global: WGW2Z.5VZD
Location and coordinates are for the approximate centre of Greineam within this administrative area.
Geographic features and populated places may cross administrative borders.