- Category: Water Feature
- Type: Bay
- Latitude/Longitude: 51°54'46"N 5°16'22"W
- Eastings/Northings: 174990, 228877
- OS Grid: SM749288
- Mapcode Local: GBR C5.PNQD
- Mapcode Global: VH0TD.K57X
Location and coordinates are for the approximate centre of Porth y Twic within this administrative area.
Geographic features and populated places may cross administrative borders.