- Category: Water Feature
- Type: Island
- Latitude/Longitude: 53°25'2"N 4°21'43"W
- Eastings/Northings: 243112, 393786
- OS Grid: SH431937
- Mapcode Local: GBR HMLN.YBJ
- Mapcode Global: WH420.YCXF
Location and coordinates are for the approximate centre of Y Crochan within this administrative area.
Geographic features and populated places may cross administrative borders.