- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 57°3'15"N 2°34'46"W
- Eastings/Northings: 364935, 796070
- OS Grid: NO649960
- Mapcode Local: GBR WZ.9PWJ
- Mapcode Global: WH8PR.BYTD
Location and coordinates are for the approximate centre of Grey Mare within this administrative area.
Geographic features and populated places may cross administrative borders.