- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 51°56'32"N 3°43'6"W
- Eastings/Northings: 281967, 228481
- OS Grid: SN819284
- Mapcode Local: GBR Y7.MXYV
- Mapcode Global: VH5FB.HFHW
Location and coordinates are for the approximate centre of Usk Reservoir within this administrative area.
Geographic features and populated places may cross administrative borders.