- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 54°38'36"N 3°9'16"W
- Eastings/Northings: 325588, 528226
- OS Grid: NY255282
- Mapcode Local: GBR 6GDR.V5
- Mapcode Global: WH700.JK10
Location and coordinates are for the approximate centre of Carlside Tarn within this administrative area.
Geographic features and populated places may cross administrative borders.