- Category: Water Feature
- Type: Bay
- Latitude/Longitude: 54°44'27"N 4°21'50"W
- Eastings/Northings: 247913, 541003
- OS Grid: NX479410
- Mapcode Local: GBR HJL5.PR4
- Mapcode Global: WH3VM.Y32D
Location and coordinates are for the approximate centre of Port Allen within this administrative area.
Geographic features and populated places may cross administrative borders.