- Category: Water Feature
- Type: Bay
- Latitude/Longitude: 49°55'11"N 6°18'33"W
- Eastings/Northings: 90792, 11092
- OS Grid: SV907110
- Mapcode Local: GBR BXTW.T03
- Mapcode Global: VGYC4.L8DR
Location and coordinates are for the approximate centre of Thomas' Porth within this administrative area.
Geographic features and populated places may cross administrative borders.