- Category: Water Feature
- Type: Island
- Latitude/Longitude: 52°48'3"N 4°40'13"W
- Eastings/Northings: 220076, 325954
- OS Grid: SH200259
- Mapcode Local: GBR GPV9.7F8
- Mapcode Global: WH33N.7V7H
Location and coordinates are for the approximate centre of Maen Gwenonwy within this administrative area.
Geographic features and populated places may cross administrative borders.