- Category: Water Feature
- Type: Bay
- Latitude/Longitude: 52°51'34"N 4°41'47"W
- Eastings/Northings: 218561, 332539
- OS Grid: SH185325
- Mapcode Local: GBR GPS4.FGG
- Mapcode Global: WH33F.TDR1
Location and coordinates are for the approximate centre of Porth Lefesig within this administrative area.
Geographic features and populated places may cross administrative borders.