- Category: Water Feature
- Type: Bay
- Latitude/Longitude: 52°51'58"N 4°27'5"W
- Eastings/Northings: 235072, 332686
- OS Grid: SH350326
- Mapcode Local: GBR 58.RK3S
- Mapcode Global: WH44P.L6DY
Location and coordinates are for the approximate centre of Y Gamlas within this administrative area.
Geographic features and populated places may cross administrative borders.