- Category: Water Feature
- Type: Island
- Latitude/Longitude: 53°13'27"N 4°10'18"W
- Eastings/Northings: 255118, 371897
- OS Grid: SH551718
- Mapcode Local: GBR 5N.0T9L
- Mapcode Global: WH546.W7N0
Location and coordinates are for the approximate centre of Y Felin Heli within this administrative area.
Geographic features and populated places may cross administrative borders.