- Category: Water Feature
- Type: Island
- Latitude/Longitude: 60°12'28"N 1°6'37"W
- Eastings/Northings: 449417, 1147390
- OS Grid: HU494473
- Mapcode Local: GBR R1LR.RWG
- Mapcode Global: XHF9R.YPTB
Location and coordinates are for the approximate centre of Green Holm within this administrative area.
Geographic features and populated places may cross administrative borders.