- Category: Water Feature
- Type: Island
- Latitude/Longitude: 50°19'47"N 4°30'15"W
- Eastings/Northings: 221864, 50779
- OS Grid: SX218507
- Mapcode Local: GBR ND.XLVD
- Mapcode Global: FRA 18G5.71K
Location and coordinates are for the approximate centre of Downend Rock within this administrative area.
Geographic features and populated places may cross administrative borders.