- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 51°43'13"N 4°9'25"W
- Eastings/Northings: 251099, 204598
- OS Grid: SN510045
- Mapcode Local: GBR GS.RPKB
- Mapcode Global: VH3MB.W1P1
Location and coordinates are for the approximate centre of Upper Lliedi Reservoir within this administrative area.
Geographic features and populated places may cross administrative borders.