- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 52°28'47"N 3°52'45"W
- Eastings/Northings: 272462, 288555
- OS Grid: SN724885
- Mapcode Local: GBR 91.JTQF
- Mapcode Global: VH4F2.PXZQ
Location and coordinates are for the approximate centre of Cwm Twrch within this administrative area.
Geographic features and populated places may cross administrative borders.