- Category: Water Feature
- Type: Island
- Latitude/Longitude: 55°38'22"N 1°37'15"W
- Eastings/Northings: 423966, 638500
- OS Grid: NU239385
- Mapcode Local: GBR K337.W7
- Mapcode Global: WHC0G.2JF1
Location and coordinates are for the approximate centre of Big Harcar within this administrative area.
Geographic features and populated places may cross administrative borders.