- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 55°8'29"N 1°42'54"W
- Eastings/Northings: 418250, 583046
- OS Grid: NZ182830
- Mapcode Local: GBR J8GZ.GR
- Mapcode Global: WHC2X.M1FC
Location and coordinates are for the approximate centre of Tranwell Reservoirs within this administrative area.
Geographic features and populated places may cross administrative borders.