- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 51°21'14"N 1°4'52"W
- Eastings/Northings: 464075, 162043
- OS Grid: SU640620
- Mapcode Local: GBR B5J.3FH
- Mapcode Global: VHCZW.67QF
Location and coordinates are for the approximate centre of Onion's Hole within this administrative area.
Geographic features and populated places may cross administrative borders.