- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 53°4'7"N 4°7'41"W
- Eastings/Northings: 257500, 354500
- OS Grid: SH575545
- Mapcode Local: GBR 5P.BRND
- Mapcode Global: WH550.K4C9
Location and coordinates are for the approximate centre of Afon Treweunydd within this administrative area.
Geographic features and populated places may cross administrative borders.