- Category: Water Feature
- Type: Bay
- Latitude/Longitude: 54°39'13"N 4°52'57"W
- Eastings/Northings: 214131, 532552
- OS Grid: NX141325
- Mapcode Local: GBR GJBD.L6B
- Mapcode Global: WH2TM.Z917
Location and coordinates are for the approximate centre of Portankill within this administrative area.
Geographic features and populated places may cross administrative borders.