- Category: Water Feature
- Type: Wetland
- Latitude/Longitude: 52°29'44"N 4°3'8"W
- Eastings/Northings: 260760, 290620
- OS Grid: SN607906
- Mapcode Local: GBR 8T.HT0J
- Mapcode Global: VH4DZ.PJZN
Location and coordinates are for the approximate centre of Pen Y Gro within this administrative area.
Geographic features and populated places may cross administrative borders.