- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 52°52'21"N 3°59'14"W
- Eastings/Northings: 266334, 332414
- OS Grid: SH663324
- Mapcode Local: GBR 5W.R3VR
- Mapcode Global: WH561.Q2F3
Location and coordinates are for the approximate centre of Llyn Twr-glâs within this administrative area.
Geographic features and populated places may cross administrative borders.