- Category: Water Feature
- Type: Island
- Latitude/Longitude: 51°51'47"N 5°10'17"W
- Eastings/Northings: 181722, 223061
- OS Grid: SM817230
- Mapcode Local: GBR C9.SXJW
- Mapcode Global: VH1R3.9FTF
Location and coordinates are for the approximate centre of Stacen y Brenhin within this administrative area.
Geographic features and populated places may cross administrative borders.