- Category: Water Feature
- Type: Island
- Latitude/Longitude: 51°45'23"N 5°11'48"W
- Eastings/Northings: 179475, 211275
- OS Grid: SM794112
- Mapcode Local: GBR G2.FK53
- Mapcode Global: VH0V6.W32Q
Location and coordinates are for the approximate centre of Siver within this administrative area.
Geographic features and populated places may cross administrative borders.