- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 51°37'12"N 4°10'31"W
- Eastings/Northings: 249500, 193500
- OS Grid: SS495935
- Mapcode Local: GBR GS.GYJ0
- Mapcode Global: VH3MQ.LJ0V
Location and coordinates are for the approximate centre of Llanrhidian Marsh within this administrative area.
Geographic features and populated places may cross administrative borders.