- Category: Water Feature
- Type: Island
- Latitude/Longitude: 58°38'50"N 3°20'30"W
- Eastings/Northings: 322222, 974055
- OS Grid: ND222740
- Mapcode Local: GBR L53W.3WC
- Mapcode Global: WH6CC.MXV6
Location and coordinates are for the approximate centre of Grassy Clett within this administrative area.
Geographic features and populated places may cross administrative borders.