- Category: Water Feature
- Type: Bay
- Latitude/Longitude: 53°24'44"N 4°17'26"W
- Eastings/Northings: 247837, 393054
- OS Grid: SH478930
- Mapcode Local: GBR HMSP.77Y
- Mapcode Global: WH422.2H1D
Location and coordinates are for the approximate centre of Porthyrysgaw within this administrative area.
Geographic features and populated places may cross administrative borders.