- Category: Water Feature
- Type: Island
- Latitude/Longitude: 52°1'27"N 4°54'51"W
- Eastings/Northings: 200159, 240217
- OS Grid: SN001402
- Mapcode Local: GBR CN.GMQ6
- Mapcode Global: VH1QG.RDX0
Location and coordinates are for the approximate centre of Catch y Mitsiwr within this administrative area.
Geographic features and populated places may cross administrative borders.