- Category: Water Feature
- Type: Island
- Latitude/Longitude: 56°42'1"N 6°27'21"W
- Eastings/Northings: 127334, 765385
- OS Grid: NM273653
- Mapcode Local: GBR BCF0.KMR
- Mapcode Global: WGYB8.SVWB
Location and coordinates are for the approximate centre of A' Chàthtach within this administrative area.
Geographic features and populated places may cross administrative borders.