- Category: Water Feature
- Type: Island
- Latitude/Longitude: 52°59'57"N 4°26'4"W
- Eastings/Northings: 236711, 347434
- OS Grid: SH367474
- Mapcode Local: GBR 59.H370
- Mapcode Global: WH43X.VWF1
Location and coordinates are for the approximate centre of Ynys Bâch within this administrative area.
Geographic features and populated places may cross administrative borders.