- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 53°1'23"N 3°5'25"W
- Eastings/Northings: 326958, 347886
- OS Grid: SJ269478
- Mapcode Local: GBR 71.FKT3
- Mapcode Global: WH77Z.H8LM
Location and coordinates are for the approximate centre of Cae-llwyd Reservoir within this administrative area.
Geographic features and populated places may cross administrative borders.