- Category: Water Feature
- Type: Island
- Latitude/Longitude: 57°20'14"N 1°56'50"W
- Eastings/Northings: 403262, 827426
- OS Grid: NK032274
- Mapcode Local: GBR P9KB.6GV
- Mapcode Global: WH9PV.1TXY
Location and coordinates are for the approximate centre of Marywalls within this administrative area.
Geographic features and populated places may cross administrative borders.