- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 53°20'18"N 4°34'38"W
- Eastings/Northings: 228500, 385500
- OS Grid: SH285855
- Mapcode Local: GBR HM2W.82M
- Mapcode Global: WH429.NBJY
Location and coordinates are for the approximate centre of Porth Tywyn-mawr within this administrative area.
Geographic features and populated places may cross administrative borders.