- Category: Water Feature
- Type: Bay
- Latitude/Longitude: 50°19'24"N 5°11'49"W
- Eastings/Northings: 172518, 51941
- OS Grid: SW725519
- Mapcode Local: GBR Z4.JRW4
- Mapcode Global: FRA 0805.T7V
Location and coordinates are for the approximate centre of Trevellas Porth within this administrative area.
Geographic features and populated places may cross administrative borders.