- Category: Water Feature
- Type: Bay
- Latitude/Longitude: 53°25'36"N 4°24'39"W
- Eastings/Northings: 239902, 394932
- OS Grid: SH399949
- Mapcode Local: GBR HMHN.06W
- Mapcode Global: WH420.64R8
Location and coordinates are for the approximate centre of Porth Adfan within this administrative area.
Geographic features and populated places may cross administrative borders.