- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 52°8'54"N 3°45'45"W
- Eastings/Northings: 279500, 251500
- OS Grid: SN795515
- Mapcode Local: GBR Y5.6Z7S
- Mapcode Global: VH5DB.Q8R6
Location and coordinates are for the approximate centre of Llyn Brianne within this administrative area.
Geographic features and populated places may cross administrative borders.