- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 54°17'33"N 3°25'21"W
- Eastings/Northings: 307500, 489500
- OS Grid: SD075895
- Mapcode Local: GBR 4LJS.TY
- Mapcode Global: WH71M.DCDG
Location and coordinates are for the approximate centre of Tarn Bay within this administrative area.
Geographic features and populated places may cross administrative borders.