- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 54°23'42"N 2°54'40"W
- Eastings/Northings: 340926, 500335
- OS Grid: NY409003
- Mapcode Local: GBR 8K3M.H7
- Mapcode Global: WH82F.7SWJ
Location and coordinates are for the approximate centre of Galls Tarn within this administrative area.
Geographic features and populated places may cross administrative borders.