- Category: Water Feature
- Type: Bay
- Latitude/Longitude: 52°45'9"N 4°47'42"W
- Eastings/Northings: 211467, 320895
- OS Grid: SH114208
- Mapcode Local: GBR GPJF.4BV
- Mapcode Global: WH33Z.92WJ
Location and coordinates are for the approximate centre of Henllwyn within this administrative area.
Geographic features and populated places may cross administrative borders.