- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 54°30'55"N 3°0'40"W
- Eastings/Northings: 334638, 513803
- OS Grid: NY346138
- Mapcode Local: GBR 7JD7.W5
- Mapcode Global: WH81S.QR9W
Location and coordinates are for the approximate centre of Hard Tarn within this administrative area.
Geographic features and populated places may cross administrative borders.