- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 54°25'35"N 2°26'33"W
- Eastings/Northings: 371378, 503541
- OS Grid: NY713035
- Mapcode Local: GBR CKC7.YZ
- Mapcode Global: WH93L.GZ1Y
Location and coordinates are for the approximate centre of Greenside Tarn within this administrative area.
Geographic features and populated places may cross administrative borders.