- Category: Water Feature
- Type: Bay
- Latitude/Longitude: 53°21'17"N 4°13'52"W
- Eastings/Northings: 251605, 386556
- OS Grid: SH516865
- Mapcode Local: GBR HMXT.YDF
- Mapcode Global: WH428.ZXBV
Location and coordinates are for the approximate centre of Porth Lydan within this administrative area.
Geographic features and populated places may cross administrative borders.