- Category: Water Feature
- Type: Bay
- Latitude/Longitude: 53°24'17"N 4°34'16"W
- Eastings/Northings: 229177, 392865
- OS Grid: SH291928
- Mapcode Local: GBR HM2P.YP0
- Mapcode Global: WH41X.RPG3
Location and coordinates are for the approximate centre of Porth y Dyfn within this administrative area.
Geographic features and populated places may cross administrative borders.