- Category: Water Feature
- Type: Island
- Latitude/Longitude: 51°52'41"N 5°18'39"W
- Eastings/Northings: 172213, 225131
- OS Grid: SM722251
- Mapcode Local: GBR C3.RZ87
- Mapcode Global: VH0TK.W2Q2
Location and coordinates are for the approximate centre of Ynys Dinas within this administrative area.
Geographic features and populated places may cross administrative borders.