- Category: Water Feature
- Type: Bay
- Latitude/Longitude: 51°57'57"N 5°6'11"W
- Eastings/Northings: 186912, 234263
- OS Grid: SM869342
- Mapcode Local: GBR CD.L8TX
- Mapcode Global: VH1QK.HVG9
Location and coordinates are for the approximate centre of Porth Glastwr within this administrative area.
Geographic features and populated places may cross administrative borders.