- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 54°36'7"N 3°4'41"W
- Eastings/Northings: 330441, 523535
- OS Grid: NY304235
- Mapcode Local: GBR 6HY7.C0
- Mapcode Global: WH707.PLC7
Location and coordinates are for the approximate centre of Tewet Tarn within this administrative area.
Geographic features and populated places may cross administrative borders.