- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 52°17'40"N 3°36'38"W
- Eastings/Northings: 290258, 267490
- OS Grid: SN902674
- Mapcode Local: GBR 9D.XFPV
- Mapcode Global: VH5CN.CLLB
Location and coordinates are for the approximate centre of Cronfa Ddwr Penygarreg within this administrative area.
Geographic features and populated places may cross administrative borders.