- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 53°19'14"N 4°34'34"W
- Eastings/Northings: 228500, 383500
- OS Grid: SH285835
- Mapcode Local: GBR HM2X.NKB
- Mapcode Global: WH429.PS1R
Location and coordinates are for the approximate centre of Porth Penrhyn-mawr within this administrative area.
Geographic features and populated places may cross administrative borders.