- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 53°8'13"N 4°4'11"W
- Eastings/Northings: 261642, 361990
- OS Grid: SH616619
- Mapcode Local: GBR 5S.67WC
- Mapcode Global: WH54N.GD8W
Location and coordinates are for the approximate centre of Marchlyn Mawr within this administrative area.
Geographic features and populated places may cross administrative borders.