- Category: Water Feature
- Type: Bay
- Latitude/Longitude: 52°51'18"N 4°42'52"W
- Eastings/Northings: 217317, 332079
- OS Grid: SH173320
- Mapcode Local: GBR GPQ4.Z03
- Mapcode Global: WH33F.KH3K
Location and coordinates are for the approximate centre of Porth Bach within this administrative area.
Geographic features and populated places may cross administrative borders.