- Category: Water Feature
- Type: Island
- Latitude/Longitude: 53°20'58"N 4°14'5"W
- Eastings/Northings: 251343, 385946
- OS Grid: SH513859
- Mapcode Local: GBR HMXV.8YJ
- Mapcode Global: WH42G.X2MJ
Location and coordinates are for the approximate centre of Trwyn Melyn within this administrative area.
Geographic features and populated places may cross administrative borders.