- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 53°13'5"N 3°43'46"W
- Eastings/Northings: 284610, 370416
- OS Grid: SH846704
- Mapcode Local: GBR 67.16HQ
- Mapcode Global: WH65K.PC5P
Location and coordinates are for the approximate centre of Llyn Ty'n-y-llyn within this administrative area.
Geographic features and populated places may cross administrative borders.