- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 54°13'44"N 2°6'59"W
- Eastings/Northings: 392500, 481500
- OS Grid: SD925815
- Mapcode Local: GBR FMNJ.KQ
- Mapcode Global: WHB5V.GYCQ
Location and coordinates are for the approximate centre of South Grain Tarn within this administrative area.
Geographic features and populated places may cross administrative borders.