- Category: Water Feature
- Type: Island
- Latitude/Longitude: 49°52'4"N 6°23'56"W
- Eastings/Northings: 84018, 5706
- OS Grid: SV840057
- Mapcode Local: GBR BYL1.1SC
- Mapcode Global: VGYC9.1LH1
Location and coordinates are for the approximate centre of Rosevean within this administrative area.
Geographic features and populated places may cross administrative borders.