- Category: Water Feature
- Type: Bay
- Latitude/Longitude: 51°52'32"N 5°18'34"W
- Eastings/Northings: 172285, 224853
- OS Grid: SM722248
- Mapcode Local: GBR C3.S5MT
- Mapcode Global: VH0TK.X4C0
Location and coordinates are for the approximate centre of Porthstinian within this administrative area.
Geographic features and populated places may cross administrative borders.