- Category: Water Feature
- Type: Island
- Latitude/Longitude: 59°23'52"N 2°23'13"W
- Eastings/Northings: 378115, 1056930
- OS Grid: HY781569
- Mapcode Local: GBR N3GW.WMK
- Mapcode Global: XH9S2.71YN
Location and coordinates are for the approximate centre of The Seider within this administrative area.
Geographic features and populated places may cross administrative borders.