- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 54°39'37"N 4°57'17"W
- Eastings/Northings: 209500, 533500
- OS Grid: NX095335
- Mapcode Local: GBR GJ4D.336
- Mapcode Global: WH2TL.V4N1
Location and coordinates are for the approximate centre of Portdown Bay within this administrative area.
Geographic features and populated places may cross administrative borders.