- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 58°4'19"N 7°4'53"W
- Eastings/Northings: 100500, 920500
- OS Grid: NB005205
- Mapcode Local: GBR 87XD.75Q
- Mapcode Global: WGW14.6C3S
Location and coordinates are for the approximate centre of Tamna Siar within this administrative area.
Geographic features and populated places may cross administrative borders.