- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 51°55'5"N 3°32'48"W
- Eastings/Northings: 293712, 225539
- OS Grid: SN937255
- Mapcode Local: GBR YG.PBW2
- Mapcode Global: VH5FM.G1SV
Location and coordinates are for the approximate centre of Cwm Brynych within this administrative area.
Geographic features and populated places may cross administrative borders.