- Category: Populated Place
- Type: Hamlet
- Latitude/Longitude: 57°37'36"N 3°9'32"W
- Eastings/Northings: 330885, 860256
- OS Grid: NJ308602
- Mapcode Local: GBR L8KK.PMZ
- Mapcode Global: WH6JH.FKZH
Location and coordinates are for the approximate centre of Blackdam within this administrative area.
Geographic features and populated places may cross administrative borders.