- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 52°28'48"N 3°47'46"W
- Eastings/Northings: 278112, 288441
- OS Grid: SN781884
- Mapcode Local: GBR 94.JXMS
- Mapcode Global: VH5BL.4XYK
Location and coordinates are for the approximate centre of Llyn Pen-cor-maen within this administrative area.
Geographic features and populated places may cross administrative borders.