- Category: Water Feature
- Type: Island
- Latitude/Longitude: 50°15'47"N 5°2'51"W
- Eastings/Northings: 182890, 44799
- OS Grid: SW828447
- Mapcode Local: GBR ZF.XH9K
- Mapcode Global: FRA 089B.KBL
Location and coordinates are for the approximate centre of Furniss Island within this administrative area.
Geographic features and populated places may cross administrative borders.