- Category: Water Feature
- Type: Bay
- Latitude/Longitude: 52°53'30"N 4°39'43"W
- Eastings/Northings: 221013, 336034
- OS Grid: SH210360
- Mapcode Local: GBR 50.PV9H
- Mapcode Global: WH338.CK6V
Location and coordinates are for the approximate centre of Porth Ychain within this administrative area.
Geographic features and populated places may cross administrative borders.