- Category: Water Feature
- Type: Island
- Latitude/Longitude: 50°28'18"N 5°2'13"W
- Eastings/Northings: 184579, 67962
- OS Grid: SW845679
- Mapcode Local: GBR ZG.T622
- Mapcode Global: FRA 07BT.3DX
Location and coordinates are for the approximate centre of Trenance Rock within this administrative area.
Geographic features and populated places may cross administrative borders.