- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 50°56'54"N 3°8'17"W
- Eastings/Northings: 320142, 117187
- OS Grid: ST201171
- Mapcode Local: GBR LZ.NJSZ
- Mapcode Global: FRA 469L.R7G
Location and coordinates are for the approximate centre of Blagdon Reservoir within this administrative area.
Geographic features and populated places may cross administrative borders.