- Category: Water Feature
- Type: Bay
- Latitude/Longitude: 53°20'26"N 4°34'19"W
- Eastings/Northings: 228856, 385734
- OS Grid: SH288857
- Mapcode Local: GBR HM2W.4FN
- Mapcode Global: WH429.R906
Location and coordinates are for the approximate centre of Porth Defaid within this administrative area.
Geographic features and populated places may cross administrative borders.