- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 54°35'43"N 3°25'12"W
- Eastings/Northings: 308348, 523181
- OS Grid: NY083231
- Mapcode Local: GBR 4HK9.CF
- Mapcode Global: WH702.FRMD
Location and coordinates are for the approximate centre of Mockerkin Tarn within this administrative area.
Geographic features and populated places may cross administrative borders.