- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 53°23'16"N 4°20'18"W
- Eastings/Northings: 244578, 390436
- OS Grid: SH445904
- Mapcode Local: GBR HMNR.9FF
- Mapcode Global: WH427.B38P
Location and coordinates are for the approximate centre of Pyllau Gwaddodi within this administrative area.
Geographic features and populated places may cross administrative borders.