- Category: Water Feature
- Type: Island
- Latitude/Longitude: 60°41'43"N 1°7'58"W
- Eastings/Northings: 447453, 1201670
- OS Grid: HP474016
- Mapcode Local: GBR R0KG.MLC
- Mapcode Global: XHF7F.NFQL
Location and coordinates are for the approximate centre of Markamouth within this administrative area.
Geographic features and populated places may cross administrative borders.