- Category: Water Feature
- Type: Island
- Latitude/Longitude: 55°36'57"N 1°43'17"W
- Eastings/Northings: 417634, 635843
- OS Grid: NU176358
- Mapcode Local: GBR J3FH.2P
- Mapcode Global: WHC0L.J3DM
Location and coordinates are for the approximate centre of Harkess Rocks within this administrative area.
Geographic features and populated places may cross administrative borders.